Ultimate Guide to Chrome Bookmarklets: Creation, Use, and 30+ Powerful Examples (2024)

Hey there, fellow Internet explorer! I’m so glad you stopped by because today, we’re going to embark on an exciting journey into the land of Chrome Bookmarklets. Trust me, once you discover the magic of bookmarklets, you’ll wonder how you ever lived without them.

So, what are bookmarklets, you ask? Well, in simple terms, bookmarklets are little snippets of JavaScript code that you can save as bookmarks in your Chrome browser. They’re like magic wands that let you perform all sorts of nifty actions on web pages with just a single click. Want to instantly change the background color of a page? There’s a bookmarklet for that! How about quickly extracting all the links from a website? Yep, bookmarklets have got you covered!

But that’s just the tip of the iceberg. Bookmarklets can do so much more, and the best part is that they’re super easy to create and use. So, whether you’re a tech-savvy wizard or a curious newbie, bookmarklets are here to make your browsing experience more fun and efficient.

Ready to get started? Awesome! Let’s explore the incredible world of Chrome Bookmarklets together.

Fantastic! Now that we’ve got a taste of what bookmarklets are all about, let’s dive into how we can create and run our very own bookmarklets in Chrome. Don’t worry, it’s a piece of cake! Just follow along with me, and you’ll be a bookmarklet wizard in no time.

How to Create Your Own Bookmarklet in Chrome

So, you’re ready to craft your first bookmarklet, huh? Awesome! Let’s do it together:

1. Open Chrome’s bookmarks bar: First things first, make sure your bookmarks bar is visible in Chrome. To do that, click on the three vertical dots in the top-right corner of Chrome, hover over “Bookmarks,” and select “Show bookmarks bar.” Ta-da! You should now see the bookmarks bar right under the address bar.

1. Create a new bookmark: Right-click on the bookmarks bar and select “Add page.” This will open a little window where we’ll work our magic.

1. Name your bookmarklet: In the “Name” field, give your bookmarklet a cool and catchy name. This is how it will appear on the bookmarks bar, so choose something that makes you smile.
2. Enter the JavaScript code: Here’s where the fun begins! In the “URL” field, type javascript: followed by the JavaScript code you want your bookmarklet to run. Don't worry if you're not a coding expert—I'll share some awesome examples in a bit!

1. Save and celebrate: Click the “Save” button, and voilà! Your very own bookmarklet is now sitting pretty on the bookmarks bar, ready for action.

How to Run a Bookmarklet in Chrome

Running a bookmarklet is the easiest thing ever! All you have to do is:

1. Navigate to a web page: Open a web page where you want to use the bookmarklet. It could be any page you like — bookmarklets are super versatile!
2. Click on the bookmarklet: Find your bookmarklet on the bookmarks bar and give it a click. Just like that, the JavaScript code will run, and you’ll see the magic happen right before your eyes!

And that’s it! You’re now a bookmarklet pro 😂😂😂. But we’re not done yet — let’s take a look at some super cool bookmarklet examples that you can start using right away. Ready? Let’s go!

Alright, we’re making great progress! Now that we know how to create and run bookmarklets in Chrome, it’s time to explore some super cool and practical examples. I’ll walk you through each one, so you can start using them to enhance your browsing experience. Let’s get started!

Highlight All Links on a Web Page

Ever found yourself on a content-rich web page and wished you could easily spot all the links? Well, this bookmarklet has got your back! With a single click, it’ll highlight all the links on the page in bright yellow. Here’s how to create it:

javascript:(function() { var links = document.querySelectorAll('a'); for (var i = 0; i < links.length; i++) { links[i].style.backgroundColor = 'yellow'; }})();

Just paste this code into the “URL” field when creating a new bookmark, and you’re good to go!
This bookmarklet creates a custom modal styled with Tailwind CSS. It prompts the user to enter a color or a Tailwind background color class (e.g., red, #ff0000, bg-red-500). When the user clicks the “Submit” button, the bookmarklet highlights the links with the specified color or class.

To activate the bookmarklet on a specific webpage, visit the webpage and click on the bookmarklet. You will be prompted to enter the color to use to highlight the link. Once you click ok, all links will be highlighted.

To deactivate the highlighting, the user can click the bookmarklet again.

Quick Word Count

Curious to know how many words are on a web page? Whether you’re doing research or checking an article’s length, this nifty bookmarklet will count all the words for you and display the total in an alert box. Here’s the code:

javascript:(function(){function createModal(wordCount){var modal=document.createElement('div');modal.id='tw-wordcount-modal';modal.classList.add('fixed','inset-0','bg-black','bg-opacity-50','flex','items-center','justify-center','z-50');var modalContent=document.createElement('div');modalContent.classList.add('bg-white','p-6','rounded-lg','shadow-xl');var modalTitle=document.createElement('h3');modalTitle.classList.add('text-xl','mb-4');modalTitle.textContent='Word Count';var modalBody=document.createElement('p');modalBody.classList.add('text-lg','mb-4');modalBody.textContent='Total words on this page: '+wordCount;var closeButton=document.createElement('button');closeButton.textContent='Close';closeButton.classList.add('mt-4','bg-blue-500','text-white','px-4','py-2','rounded','hover:bg-blue-600','cursor-pointer');closeButton.addEventListener('click',function(){document.getElementById('tw-wordcount-modal').remove();});modalContent.appendChild(modalTitle);modalContent.appendChild(modalBody);modalContent.appendChild(closeButton);modal.appendChild(modalContent);document.body.appendChild(modal);}if(!document.getElementById('tw-bookmarklet-styles')){var link=document.createElement('link');link.rel='stylesheet';link.id='tw-bookmarklet-styles';link.href='https://cdnjs.cloudflare.com/ajax/libs/tailwindcss/2.2.19/tailwind.min.css';document.head.appendChild(link);}var text=document.body.innerText;var wordCount=text.trim().split(' ').length;createModal(wordCount);})();

Extract Header Tags

This bookmarklet extracts and lists all header tags (<h1> to <h6>) present on a web page. It provides an organized view of the headings and their hierarchy in a nice table.

javascript:(function(){function createModal(){var modal=document.createElement("div");modal.id="tw-heading-modal";modal.classList.add("fixed","inset-0","bg-black","bg-opacity-50","flex","items-center","justify-center","z-50");var modalContent=document.createElement("div");modalContent.classList.add("bg-white","p-6","rounded-lg","shadow-xl","w-full","max-w-3xl","overflow-auto","max-h-screen");var modalTitle=document.createElement("h3");modalTitle.classList.add("text-xl","mb-4");modalTitle.textContent="Heading Tags on the Page";var table=document.createElement("table");table.classList.add("table-auto","w-full","text-left","whitespace-no-wrap");var thead=document.createElement("thead");var tr=document.createElement("tr");var th=document.createElement("th");th.classList.add("px-4","py-2"),th.textContent="Heading Level";var th2=document.createElement("th");th2.classList.add("px-4","py-2"),th2.textContent="Content";tr.appendChild(th),tr.appendChild(th2),thead.appendChild(tr),table.appendChild(thead);var tbody=document.createElement("tbody");for(var i=1;i<=6;i++){var elements=document.getElementsByTagName("h"+i);for(var j=0;j<elements.length;j++){var tr2=document.createElement("tr");tr2.classList.add("border-t","border-gray-200");var td1=document.createElement("td");td1.classList.add("px-4","py-2"),td1.textContent="H"+i;var td2=document.createElement("td");td2.classList.add("px-4","py-2"),td2.textContent=elements[j].innerText;tr2.appendChild(td1),tr2.appendChild(td2),tbody.appendChild(tr2)}}table.appendChild(tbody),modalContent.appendChild(modalTitle),modalContent.appendChild(table);var closeButton=document.createElement("button");closeButton.textContent="Close",closeButton.classList.add("mt-4","bg-blue-500","text-white","px-4","py-2","rounded","hover:bg-blue-600","cursor-pointer"),closeButton.addEventListener("click",(function(){document.getElementById("tw-heading-modal").remove()})),modalContent.appendChild(closeButton),modal.appendChild(modalContent),document.body.appendChild(modal)}if(!document.getElementById("tw-bookmarklet-styles")){var link=document.createElement("link");link.rel="stylesheet",link.id="tw-bookmarklet-styles",link.href="https://cdnjs.cloudflare.com/ajax/libs/tailwindcss/2.2.19/tailwind.min.css",document.head.appendChild(link)}createModal();})();

This bookmarklet calculates the word count of the page and displays it inside a custom modal styled with Tailwind CSS. The modal includes a title indicating “Word Count,” a body displaying the calculated word count (e.g., “Total words on this page: 500”), and a “Close” button that allows you to close the modal.

Generate a QR Code for the Current Page

Want to share a web page with a friend or quickly open it on your phone? This bookmarklet generates a QR code for the current URL, making it super easy to share or access the page on other devices. Here’s how to create it:

javascript:(function() { let qrUrl = 'https://api.qrserver.com/v1/create-qr-code/?size=150x150&data=' + encodeURIComponent(location.href); let modal = document.createElement('div'); modal.className = 'fixed inset-0 flex items-center justify-center bg-black bg-opacity-50 z-50'; let qrImage = document.createElement('img'); qrImage.src = qrUrl; let closeButton = document.createElement('button'); closeButton.textContent = 'Close'; closeButton.className = 'bg-blue-500 text-white px-4 py-2 rounded-md'; closeButton.addEventListener('click', function() { modal.remove(); }); modal.appendChild(qrImage); modal.appendChild(closeButton); document.body.appendChild(modal); })();Just click the bookmarklet, and a new tab will open with the QR code. Simple, right?

Identify Redirects

Easily identify and analyze redirects on your web page with this bookmarklet. It fetches the current URL and provides information about the HTTP status code and any redirect locations.

javascript:(function(){function createModal(t,e){var n=document.createElement("div");n.id="tw-redirect-modal",n.classList.add("fixed","inset-0","bg-black","bg-opacity-50","flex","items-center","justify-center","z-50"),n.addEventListener("click",(function(t){t.target.id==="tw-redirect-modal"&&n.remove()}));var a=document.createElement("div");a.classList.add("bg-white","p-6","rounded-lg","shadow-xl","w-full","max-w-3xl","overflow-auto","max-h-screen");var o=document.createElement("h3");o.classList.add("text-xl","mb-4"),o.textContent="HTTP Redirect Checker";var r=document.createElement("p");r.classList.add("text-lg","mb-4"),r.textContent=t,r.style.color=e;var i=document.createElement("button");i.textContent="Close",i.classList.add("mt-4","bg-blue-500","text-white","px-4","py-2","rounded","hover:bg-blue-600","cursor-pointer"),i.addEventListener("click",(function(){n.remove()})),a.appendChild(o),a.appendChild(r),a.appendChild(i),n.appendChild(a),document.body.appendChild(n)}if(!document.getElementById("tw-bookmarklet-styles")){var t=document.createElement("link");t.rel="stylesheet",t.id="tw-bookmarklet-styles",t.href="https://cdnjs.cloudflare.com/ajax/libs/tailwindcss/2.2.19/tailwind.min.css",document.head.appendChild(t)}fetch(location.href,{redirect:"manual"}).then(t=>{var e=t.status;e>=300&&e<400?(createModal("HTTP Status Code: "+e,"black"),createModal("Redirect Location: "+t.headers.get("Location"),"blue")):createModal("No redirect detected.","green")}).catch(t=>createModal("Request failed: "+t,"red"))})();

Highlight NoFollow Links

Quickly highlight all “nofollow” links on a web page with this bookmarklet. It visually distinguishes these links, making it easy to identify them during an SEO audit. You will be prompted with a modal to enter the color of the background and the border for the links to be highlighted on the page.

javascript:(function(){function createModal(t,e){var n=document.createElement("div");n.id="tw-redirect-modal",n.classList.add("fixed","inset-0","bg-black","bg-opacity-50","flex","items-center","justify-center","z-50"),n.addEventListener("click",(function(t){t.target.id==="tw-redirect-modal"&&n.remove()}));var a=document.createElement("div");a.classList.add("bg-white","p-6","rounded-lg","shadow-xl","w-full","max-w-3xl","overflow-auto","max-h-screen");var o=document.createElement("h3");o.classList.add("text-xl","mb-4"),o.textContent="HTTP Redirect Checker";var r=document.createElement("p");r.classList.add("text-lg","mb-4"),r.textContent=t,r.style.color=e;var i=document.createElement("button");i.textContent="Close",i.classList.add("mt-4","bg-blue-500","text-white","px-4","py-2","rounded","hover:bg-blue-600","cursor-pointer"),i.addEventListener("click",(function(){n.remove()})),a.appendChild(o),a.appendChild(r),a.appendChild(i),n.appendChild(a),document.body.appendChild(n)}if(!document.getElementById("tw-bookmarklet-styles")){var t=document.createElement("link");t.rel="stylesheet",t.id="tw-bookmarklet-styles",t.href="https://cdnjs.cloudflare.com/ajax/libs/tailwindcss/2.2.19/tailwind.min.css",document.head.appendChild(t)}fetch(location.href,{redirect:"manual"}).then(t=>{var e=t.status;e>=300&&e<400?(createModal("HTTP Status Code: "+e,"black"),createModal("Redirect Location: "+t.headers.get("Location"),"blue")):createModal("No redirect detected.","green")}).catch(t=>createModal("Request failed: "+t,"red"))})();

Display Image Alt Attributes

Efficiently review the alt attributes of images on your web page with this bookmarklet. It generates an overlay displaying the alt text for each image, making it simple to assess image accessibility.

javascript:(function(){if(!document.getElementById("tw-bookmarklet-styles")){var e=document.createElement("link");e.rel="stylesheet",e.id="tw-bookmarklet-styles",e.href="https://cdnjs.cloudflare.com/ajax/libs/tailwindcss/2.2.19/tailwind.min.css",document.head.appendChild(e)}var t=document.createElement("div");t.id="tw-img-stats-modal",t.classList.add("fixed","inset-0","bg-black","bg-opacity-50","flex","items-center","justify-center","z-50"),t.addEventListener("click",(function(e){e.target.id==="tw-img-stats-modal"&&t.remove()}));var n=document.createElement("div");n.classList.add("bg-white","p-6","rounded-lg","shadow-xl","w-full","max-w-3xl","overflow-auto","max-h-screen");var a=document.createElement("h3");a.classList.add("text-xl","mb-4"),a.textContent="Image Stats";var c=document.createElement("table");c.classList.add("w-full","text-left","border-collapse","border","border-gray-300","rounded-md"),c.innerHTML="<thead><tr><th class='border border-gray-300 px-4 py-2 bg-gray-100'>Image Src</th><th class='border border-gray-300 px-4 py-2 bg-gray-100'>Alt Text</th><th class='border border-gray-300 px-4 py-2 bg-gray-100'>Preview</th><th class='border border-gray-300 px-4 py-2 bg-gray-100'>Actions</th></tr></thead><tbody></tbody>";var r=c.querySelector("tbody"),o=document.querySelectorAll("img");for(let e of o){var s=e.src||"N/A",i=e.alt||"No alt text",d=document.createElement("tr");d.innerHTML='<td class="border border-gray-300 px-4 py-2 break-all">'+s+'</td><td class="border border-gray-300 px-4 py-2 break-all">'+i+'</td><td class="border border-gray-300 px-4 py-2"><img src="'+s+'" alt="'+i+'" class="w-16 h-auto inline-block object-cover"></td><td class="border border-gray-300 px-4 py-2"><a href="'+s+'" target="_blank" class="text-blue-500 hover:underline">View Image</a></td>',r.appendChild(d)}var l=document.createElement("button");l.textContent="Close",l.classList.add("mt-4","bg-blue-500","text-white","px-4","py-2","rounded","hover:bg-blue-600","cursor-pointer"),l.addEventListener("click",(function(){t.remove()})),n.appendChild(a),n.appendChild(c),n.appendChild(l),t.appendChild(n),document.body.appendChild(t)})();

Utilizing Schema Markup for Enhanced SERP Presence

Another important aspect of SEO is the use of schema markup. Schema markup is a form of structured data that helps search engines better understand the content of your web page. By implementing schema markup, you can enhance the way your website appears in search engine results pages (SERPs) and improve click-through rates.

Consider using the following bookmarklet to assess whether your web page contains schema markup:

javascript:(function(){let modal=document.createElement('div');modal.className='fixed inset-0 flex items-center justify-center bg-black bg-opacity-50 z-50';modal.addEventListener('click',function(event){event.target===modal&&modal.remove()});let container=document.createElement('div');container.className='relative bg-white rounded-md shadow-lg p-6 max-w-md mx-auto';container.style.maxHeight='80vh';container.style.overflow='auto';let title=document.createElement('h2');title.className='text-xl font-semibold mb-4';title.textContent='Schema Markup (JSON-LD) Detected:';container.appendChild(title);let jsonLdScripts=document.querySelectorAll('script[type="application/ld+json"]');if(jsonLdScripts.length>0){jsonLdScripts.forEach(script=>{let data=document.createElement('pre');data.className='bg-gray-100 p-4 my-4';data.textContent=JSON.stringify(JSON.parse(script.textContent),null,2);container.appendChild(data);});}else{let message=document.createElement('p');message.textContent='No schema markup (JSON-LD) detected.';container.appendChild(message);}let closeButton=document.createElement('button');closeButton.className='absolute top-4 right-4 px-3 py-1 bg-blue-500 text-white rounded-md';closeButton.textContent='Close';closeButton.addEventListener('click',function(){modal.remove()});container.appendChild(closeButton);modal.appendChild(container);document.body.appendChild(modal);})();

Highlight External Links

This bookmarklet identifies and highlights all external links on a web page, making it easier to distinguish between internal and outbound links. All external links will be highlighted with a light blue background and blue border.

javascript:(function(){var t=document.createElement("style");t.innerHTML="@import url('https://cdnjs.cloudflare.com/ajax/libs/tailwindcss/2.2.19/tailwind.min.css')";document.head.appendChild(t);var e=function(){var e=document.createElement("div");e.className="fixed top-0 left-0 w-screen h-screen bg-black bg-opacity-50 flex items-center justify-center z-50";var t=document.createElement("div");t.className="relative bg-white p-6 max-w-md mx-auto rounded-md shadow-xl overflow-auto";e.appendChild(t);var a=document.createElement("button");a.textContent="Close",a.className="absolute top-2 right-2 bg-gray-300 p-1 rounded-md cursor-pointer",e.appendChild(a),a.addEventListener("click",function(){e.remove()}),e.addEventListener("click",function(a){a.target===e&&e.remove()}),document.body.appendChild(e);return t}(),a=document.querySelectorAll("a"),n=window.location.hostname;for(let t of a){let a=new URL(t.href).hostname;a!==n&&(t.className="bg-blue-200 border border-blue-500")};e.innerHTML='<div class="overflow-auto"><h2 class="text-xl font-semibold mb-4">External Links Highlighted</h2><p class="text-gray-700">All external links have been highlighted with a light blue background and blue border.</p></div>'})();

Find Broken Images

Identify broken images on a web page with this bookmarklet. It checks the loading status of each image and highlights any that fail to load.

javascript:(function(){var e=document.createElement("style");e.innerHTML="@import url('https://cdnjs.cloudflare.com/ajax/libs/tailwindcss/2.2.19/tailwind.min.css')";document.head.appendChild(e);var t=function(){var e=document.createElement("div");e.className="fixed top-0 left-0 w-screen h-screen bg-black bg-opacity-50 flex items-center justify-center z-50";var t=document.createElement("div");t.className="relative bg-white p-6 max-w-md mx-auto rounded-md shadow-xl overflow-auto";e.appendChild(t);var n=document.createElement("button");n.textContent="Close",n.className="absolute top-2 right-2 bg-gray-300 p-1 rounded-md cursor-pointer",e.appendChild(n),n.addEventListener("click",function(){e.remove()}),e.addEventListener("click",function(t){t.target===e&&e.remove()}),document.body.appendChild(e);return t}(),n=document.createElement("ul"),o=document.querySelectorAll("img");for(let e of o)e.addEventListener("error",function(){e.style.border="2px solid red";var o=document.createElement("li");o.textContent="Broken Image: "+e.src,n.appendChild(o)});var l=t;l.innerHTML='<div class="overflow-auto"><h2 class="text-xl font-semibold mb-4">Broken Images Detected</h2><p class="text-gray-700">The following images failed to load:</p></div>',l.appendChild(n)})();

Show Hidden Form Fields

Reveal all hidden form fields on a web page with this bookmarklet. It makes hidden fields visible, allowing you to inspect their values.

javascript:(function(){var css="@import url('https://cdnjs.cloudflare.com/ajax/libs/tailwindcss/2.2.19/tailwind.min.css')";var style=document.createElement("style");style.innerHTML=css;document.head.appendChild(style);var modalBg=document.createElement("div");modalBg.className="fixed inset-0 flex items-center justify-center bg-black bg-opacity-50 z-50";var modal=document.createElement("div");modal.className="relative bg-white rounded-md shadow-lg p-6 max-w-md mx-auto flex flex-col space-y-4 overflow-auto";modalBg.appendChild(modal);modalBg.addEventListener("click",function(e){e.target===modalBg&&modalBg.remove()});document.body.appendChild(modalBg);var table=document.createElement("table");table.className="table-auto w-full text-left";var thead=document.createElement("thead");thead.innerHTML="<tr><th class='border px-4 py-2'>Name</th><th class='border px-4 py-2'>Value</th><th class='border px-4 py-2'>HTML Code</th></tr>";table.appendChild(thead);var tbody=document.createElement("tbody");table.appendChild(tbody);var hiddenFields=document.querySelectorAll('input[type="hidden"]');if(hiddenFields.length==0){modal.innerHTML='<h2 class="text-xl font-semibold mb-4">No Hidden Input Fields</h2><p class="text-gray-700 mb-4">There are no hidden input fields on this page.</p>';}else{modal.innerHTML=`<h2 class="text-xl font-semibold mb-4">Hidden Input Fields Made Visible</h2><p class="text-gray-700 mb-4">The following hidden input fields have been made visible on page: <strong>${location.href}</strong></p>`;for(var field of hiddenFields){field.setAttribute("type","text");field.style.backgroundColor="lightyellow";var tr=document.createElement("tr");tr.innerHTML=`<td class='border px-4 py-2'>${field.name}</td><td class='border px-4 py-2'>${field.value}</td><td class='border px-4 py-2'>${field.outerHTML}</td>`;tbody.appendChild(tr);}modal.appendChild(table);}var btnClose=document.createElement("button");btnClose.textContent="Close";btnClose.className="bg-gray-300 p-1 rounded-md mt-4 self-end";btnClose.addEventListener("click",function(){modalBg.remove()});modal.appendChild(btnClose);})();

View Cookies for Current Site

Display all cookies associated with the current website with this bookmarklet. It provides an overview of cookie names and values in the browser console.

javascript:(function(){var css="@import url('https://cdnjs.cloudflare.com/ajax/libs/tailwindcss/2.2.19/tailwind.min.css')";var style=document.createElement("style");style.innerHTML=css;document.head.appendChild(style);var modalBg=document.createElement("div");modalBg.className="fixed inset-0 flex items-center justify-center bg-black bg-opacity-50 z-50";var modal=document.createElement("div");modal.className="relative bg-white rounded-md shadow-lg p-6 max-w-md mx-auto flex flex-col space-y-4 overflow-auto";modalBg.appendChild(modal);modalBg.addEventListener("click",function(e){e.target===modalBg&&modalBg.remove()});document.body.appendChild(modalBg);var ul=document.createElement("ul");ul.className="list-disc list-inside";var cookies=document.cookie.split('; ');if(cookies.length==0||cookies[0]==""){modal.innerHTML='<h2 class="text-xl font-semibold mb-4">No Cookies Found</h2><p class="text-gray-700 mb-4">There are no cookies for this site.</p>';}else{modal.innerHTML='<h2 class="text-xl font-semibold mb-4">Cookies for Current Site</h2><p class="text-gray-700 mb-4">The following cookies were found for this site:</p>';for(var cookie of cookies){var li=document.createElement("li");li.textContent=cookie;ul.appendChild(li);}modal.appendChild(ul);}var btnClose=document.createElement("button");btnClose.textContent="Close";btnClose.className="bg-gray-300 p-1 rounded-md mt-4 self-end";btnClose.addEventListener("click",function(){modalBg.remove()});modal.appendChild(btnClose);})();

Preview Meta Tags and Open Graph Tags

Examine the meta tags and Open Graph tags of a web page with this bookmarklet. It displays the meta description, meta keywords, and Open Graph properties in the browser console, allowing you to evaluate their content.

javascript:(function(){var css="@import url('https://cdnjs.cloudflare.com/ajax/libs/tailwindcss/2.2.19/tailwind.min.css')";var style=document.createElement("style");style.innerHTML=css;document.head.appendChild(style);var modalBg=document.createElement("div");modalBg.className="fixed inset-0 flex items-center justify-center bg-black bg-opacity-50 z-50";var modal=document.createElement("div");modal.className="relative bg-white rounded-md shadow-lg p-6 max-w-md mx-auto flex flex-col space-y-4 overflow-auto";modalBg.appendChild(modal);modalBg.addEventListener("click",function(e){e.target===modalBg&&modalBg.remove()});document.body.appendChild(modalBg);var ul=document.createElement("ul");ul.className="list-disc list-inside";var metaDescription=document.querySelector('meta[name="description"]');var metaKeywords=document.querySelector('meta[name="keywords"]');var ogTitle=document.querySelector('meta[property="og:title"]');var ogDescription=document.querySelector('meta[property="og:description"]');var ogImage=document.querySelector('meta[property="og:image"]');var liMetaDesc=document.createElement("li");liMetaDesc.innerHTML='<strong>Meta Description:</strong> '+(metaDescription?metaDescription.content:'Not found');ul.appendChild(liMetaDesc);var liMetaKeywords=document.createElement("li");liMetaKeywords.innerHTML='<strong>Meta Keywords:</strong> '+(metaKeywords?metaKeywords.content:'Not found');ul.appendChild(liMetaKeywords);var liOgTitle=document.createElement("li");liOgTitle.innerHTML='<strong>Open Graph Title:</strong> '+(ogTitle?ogTitle.content:'Not found');ul.appendChild(liOgTitle);var liOgDesc=document.createElement("li");liOgDesc.innerHTML='<strong>Open Graph Description:</strong> '+(ogDescription?ogDescription.content:'Not found');ul.appendChild(liOgDesc);var liOgImage=document.createElement("li");liOgImage.innerHTML='<strong>Open Graph Image:</strong> '+(ogImage?ogImage.content:'Not found');ul.appendChild(liOgImage);modal.appendChild(ul);var btnClose=document.createElement("button");btnClose.textContent="Close";btnClose.className="bg-gray-300 p-1 rounded-md mt-4 self-end";btnClose.addEventListener("click",function(){modalBg.remove()});modal.appendChild(btnClose);})();

Check Robots.txt File

Quickly access the robots.txt file of the current website with this bookmarklet. It provides you with a link to navigate directly to the robots.txt file, enabling you to assess the directives for web crawlers.

javascript:(function(){var t=document.createElement("style");t.innerHTML="@import url('https://cdnjs.cloudflare.com/ajax/libs/tailwindcss/2.2.19/tailwind.min.css')";document.head.appendChild(t);var e=function(){var t=document.createElement("div");t.className="fixed inset-0 flex items-center justify-center bg-black bg-opacity-50 z-50";var e=document.createElement("div");e.className="relative bg-white rounded-md shadow-lg p-6 max-w-md mx-auto flex flex-col space-y-4";t.appendChild(e);var n=document.createElement("div");n.className="overflow-auto max-h-96",e.appendChild(n);var o=document.createElement("button");o.textContent="Close",o.className="bg-blue-500 text-white px-3 py-1 rounded-md self-start mt-auto",e.appendChild(o),t.addEventListener("click",function(e){e.target===t&&t.remove()}),o.addEventListener("click",function(){t.remove()}),document.body.appendChild(t);return n}(),n=document.createElement("pre"),o=location.protocol+"//"+location.hostname+"/robots.txt";fetch(o).then(function(t){return t.text()}).then(function(t){n.textContent=t,e.innerHTML='<h2 class="text-xl font-semibold mb-4">Robots.txt Content</h2><p class="text-gray-700 mb-4">The content of the robots.txt file is shown below:</p><a href="'+o+'" target="_blank" class="text-blue-500 mb-4">Open robots.txt in a new tab</a>',e.appendChild(n)}).catch(function(t){console.warn("Error fetching robots.txt:",t)})})();

Test Responsiveness of Web Page

Verify the responsiveness of a web page by viewing it in different device sizes with this bookmarklet. It simulates opening the page in a new window (in the background) and offers multiple screen resolutions status.

javascript:(function(){var t=document.createElement("style");t.innerHTML="@import url('https://cdnjs.cloudflare.com/ajax/libs/tailwindcss/2.2.19/tailwind.min.css')",document.head.appendChild(t);var e=document.createElement("div");e.className="fixed inset-0 flex items-center justify-center bg-black bg-opacity-50 z-50";var n=document.createElement("div");n.className="relative bg-white rounded-md shadow-lg p-6 max-w-md mx-auto flex flex-col",e.appendChild(n);var o=document.createElement("div");o.className="overflow-y-auto flex-1 mb-4",n.appendChild(o);var c=document.createElement("ul");c.className="list-disc list-inside";var i=[320,480,768,1024,1440];i.forEach((function(t){var e=document.createElement("li");e.textContent="Screen width: "+t+"px - ";var i=document.createElement("span");document.documentElement.clientWidth>=t?(i.textContent="Responsive",i.className="text-green-500 font-bold"):(i.textContent="Not Responsive",i.className="text-red-500 font-bold"),e.appendChild(i),c.appendChild(e)})),o.appendChild(c);var r=document.createElement("button");r.textContent="Close",r.className="bg-blue-500 text-white p-1 rounded-md self-end",r.addEventListener("click",(function(){e.remove()})),n.appendChild(r),e.addEventListener("click",(function(t){t.target===e&&e.remove()})),document.body.appendChild(e)})();

Find Duplicate Content on Page

Identify any duplicate content on a web page with this bookmarklet. It checks for repeated text and provides a summary of the duplicates in a nice table sorted by word counts in descending order.

javascript:(function(){var t=document.createElement("style");t.innerHTML="@import url('https://cdnjs.cloudflare.com/ajax/libs/tailwindcss/2.2.19/tailwind.min.css')";document.head.appendChild(t);var e=document.createElement("div");e.className="fixed inset-0 flex items-center justify-center bg-black bg-opacity-50 z-50";var n=document.createElement("div");n.className="relative bg-white rounded-md shadow-lg p-6 max-w-md mx-auto flex flex-col space-y-4";e.appendChild(n);var a=document.createElement("div");a.className="overflow-auto max-h-96",n.appendChild(a);var o=document.createElement("table");o.className="w-full text-left table-auto",a.appendChild(o);var r=document.createElement("thead"),c=document.createElement("tr");r.appendChild(c);var l=document.createElement("th");l.textContent="Word",l.className="px-4 py-2",c.appendChild(l);var d=document.createElement("th");d.textContent="Count",d.className="px-4 py-2",c.appendChild(d),o.appendChild(r);var s=document.createElement("tbody"),i=document.body.innerText.split(/\s+/),u={};i.forEach(function(t){u[t]=(u[t]||0)+1});var m=Object.entries(u).filter(function(t){return t[1]>1});m.sort(function(a,b){return b[1]-a[1]});m.forEach(function(t){var e=document.createElement("tr"),n=document.createElement("td");n.textContent=t[0],n.className="border px-4 py-2",e.appendChild(n);var a=document.createElement("td");a.textContent=t[1],a.className="border px-4 py-2",e.appendChild(a),s.appendChild(e)}),o.appendChild(s);var f=document.createElement("button");f.textContent="Close",f.className="bg-blue-500 text-white px-3 py-1 rounded-md self-start mt-auto",n.appendChild(f),f.addEventListener("click",function(){e.remove()}),e.addEventListener("click",function(t){t.target===e&&e.remove()}),document.body.appendChild(e)})();

List All CSS Stylesheets

Generate a list of all CSS stylesheets linked to the current web page with this bookmarklet. It displays the URLs of the stylesheets, providing an overview of the styles being applied to the page. Each stylesheet is displayed as a clickable link that opens in a new tab when clicked.

javascript:(function(){var t=document.createElement("style");t.innerHTML="@import url('https://cdnjs.cloudflare.com/ajax/libs/tailwindcss/2.2.19/tailwind.min.css')";document.head.appendChild(t);var e=document.createElement("div");e.className="fixed inset-0 flex items-center justify-center bg-black bg-opacity-50 z-50";var n=document.createElement("div");n.className="relative bg-white rounded-md shadow-lg p-6 max-w-md mx-auto flex flex-col space-y-4";e.appendChild(n);var a=document.createElement("div");a.className="overflow-auto max-h-96",n.appendChild(a);var o=document.createElement("ul"),r=document.querySelectorAll('link[rel="stylesheet"]');r.forEach(function(t){var e=document.createElement("li"),n=document.createElement("a");n.href=t.href,n.textContent=t.href,n.target="_blank",e.appendChild(n),o.appendChild(e)}),a.appendChild(o);var c=document.createElement("button");c.textContent="Close",c.className="bg-blue-500 text-white px-3 py-1 rounded-md self-start mt-auto",n.appendChild(c),c.addEventListener("click",function(){e.remove()}),e.addEventListener("click",function(t){t.target===e&&e.remove()}),document.body.appendChild(e)})();

View JavaScript Errors on Page

Detect JavaScript errors on a web page with this bookmarklet. It opens the browser’s console and filters to display only error messages, helping you identify and troubleshoot JavaScript issues.

javascript:(function(){var css=document.createElement("style");css.innerHTML="@import url('https://cdnjs.cloudflare.com/ajax/libs/tailwindcss/2.2.19/tailwind.min.css')";document.head.appendChild(css);var createModal=function(){var modalBg=document.createElement("div");modalBg.className="fixed inset-0 flex items-center justify-center bg-black bg-opacity-50 z-50";var modal=document.createElement("div");modal.className="relative bg-white rounded-md shadow-lg p-6 max-w-md mx-auto flex flex-col space-y-4";modalBg.appendChild(modal);var closeModal=function(){modalBg.remove()};modalBg.addEventListener("click",function(e){e.target===modalBg&&closeModal()});document.body.appendChild(modalBg);return{modal:modal,close:closeModal}};var errorModal=createModal();errorModal.modal.innerHTML='<h2 class="text-xl font-semibold mb-4">JavaScript Errors:</h2><table class="w-full text-left"><thead><tr><th class="border px-2 py-1">Message</th><th class="border px-2 py-1">Source</th><th class="border px-2 py-1">Line</th><th class="border px-2 py-1">Column</th></tr></thead><tbody></tbody></table><button class="bg-blue-500 text-white px-4 py-2 rounded-md mt-4" onclick="this.parentElement.parentElement.remove()">Close</button><button class="bg-red-500 text-white px-4 py-2 rounded-md mt-4 ml-4" onclick="triggerTestError()">Test Error</button>';var tbody=errorModal.modal.querySelector("tbody");window.onerror=function(message,source,lineno,colno,error){var tr=document.createElement("tr");tr.innerHTML='<td class="border px-2 py-1">'+message+'</td><td class="border px-2 py-1"><a href="'+source+'" target="_blank">'+source+'</a></td><td class="border px-2 py-1">'+lineno+'</td><td class="border px-2 py-1">'+colno+'</td>';tbody.appendChild(tr)};window.triggerTestError=function(){throw new Error("This is a test error.")}})();

Highlight All Images Without Alt Attributes

Identify images without alt attributes on a web page with this bookmarklet. It highlights such images and provides a visual indication of images that may impact accessibility.

javascript:(function(){var css=document.createElement("style");css.innerHTML="@import url('https://cdnjs.cloudflare.com/ajax/libs/tailwindcss/2.2.19/tailwind.min.css')";document.head.appendChild(css);var createModal=function(){var modalBg=document.createElement("div");modalBg.className="fixed inset-0 flex items-center justify-center bg-black bg-opacity-50 z-50";var modal=document.createElement("div");modal.className="relative bg-white rounded-md shadow-lg p-6 max-w-md mx-auto flex flex-col space-y-4";modalBg.appendChild(modal);var closeModal=function(){modalBg.remove()};modalBg.addEventListener("click",function(e){e.target===modalBg&&closeModal()});document.body.appendChild(modalBg);return{modal:modal,close:closeModal}};var colorModal=createModal();var colorForm=document.createElement("form");colorForm.innerHTML='<label class="block mb-2">Highlight Color: <input type="color" name="highlightColor" class="border"></label><button type="submit" class="bg-blue-500 text-white px-4 py-2 rounded-md">Submit</button>';colorModal.modal.appendChild(colorForm);colorForm.addEventListener("submit",function(e){e.preventDefault();var color=e.target.elements.highlightColor.value;colorModal.close();var images=document.querySelectorAll('img:not([alt])');var infoModal=createModal();infoModal.modal.innerHTML='<h2 class="text-xl font-semibold mb-4">Images without Alt Attributes</h2><table class="w-full text-left"><thead><tr><th class="border px-2 py-1">Image</th><th class="border px-2 py-1">URL</th></tr></thead><tbody></tbody></table><button class="bg-blue-500 text-white px-4 py-2 rounded-md mt-4" onclick="this.parentElement.parentElement.remove()">Close</button>';var tbody=infoModal.modal.querySelector("tbody");images.forEach(function(img){img.style.border="3px solid "+color;var tr=document.createElement("tr");tr.innerHTML='<td class="border px-2 py-1"><img src="'+img.src+'" style="max-width:100px;max-height:100px;"></td><td class="border px-2 py-1"><a href="'+img.src+'" target="_blank">'+img.src+'</a></td>';tbody.appendChild(tr)})});})();

Display Server Response Headers

Examine the server response headers for the current URL with this bookmarklet. It fetches the URL and provides a summary of the response headers.

javascript:(function(){var css=document.createElement("style");css.innerHTML="@import url('https://cdnjs.cloudflare.com/ajax/libs/tailwindcss/2.2.19/tailwind.min.css')";document.head.appendChild(css);var createModal=function(){var modalBg=document.createElement("div");modalBg.className="fixed inset-0 flex items-center justify-center bg-black bg-opacity-50 z-50";var modal=document.createElement("div");modal.className="relative bg-white rounded-md shadow-lg p-6 max-w-md mx-auto flex flex-col space-y-4";modalBg.appendChild(modal);var closeModal=function(){modalBg.remove()};modalBg.addEventListener("click",function(e){e.target===modalBg&&closeModal()});document.body.appendChild(modalBg);return{modal:modal,close:closeModal}};var headerModal=createModal();headerModal.modal.innerHTML='<h2 class="text-xl font-semibold mb-4">Server Response Headers:</h2><pre class="border p-4 rounded overflow-auto max-h-96"></pre><button class="bg-blue-500 text-white px-4 py-2 rounded-md mt-4" onclick="this.parentElement.parentElement.remove()">Close</button>';var pre=headerModal.modal.querySelector("pre");fetch(location.href,{method:"HEAD"}).then(function(response){for(let[header,value]of response.headers.entries()){pre.textContent+=header+": "+value+"\\n"}}).catch(function(error){pre.textContent="Request failed: "+error})})();

Generate Sitemap of Internal Links

Create a simple sitemap of all internal links on a web page with this bookmarklet. It extracts the links and organizes them in a list format, providing an overview of the site’s structure.

javascript:(function(){var css=document.createElement("style");css.innerHTML="@import url('https://cdnjs.cloudflare.com/ajax/libs/tailwindcss/2.2.19/tailwind.min.css')";document.head.appendChild(css);var createModal=function(){var modalBg=document.createElement("div");modalBg.className="fixed inset-0 flex items-center justify-center bg-black bg-opacity-50 z-50";var modal=document.createElement("div");modal.className="relative bg-white rounded-md shadow-lg p-6 max-w-md mx-auto flex flex-col space-y-4";modalBg.appendChild(modal);var closeModal=function(){modalBg.remove()};modalBg.addEventListener("click",function(e){e.target===modalBg&&closeModal()});document.body.appendChild(modalBg);return{modal:modal,close:closeModal}};var sitemapModal=createModal();sitemapModal.modal.innerHTML='<h2 class="text-xl font-semibold mb-4">Sitemap of Internal Links:</h2><div class="border p-4 rounded overflow-auto max-h-96"></div><button class="bg-blue-500 text-white px-4 py-2 rounded-md mt-4" onclick="this.parentElement.parentElement.remove()">Close</button>';var linksDiv=sitemapModal.modal.querySelector("div");var currentDomain=window.location.hostname;var links=Array.from(document.querySelectorAll("a")).filter(link=>new URL(link.href).hostname===currentDomain);var uniqueLinks=[...new Set(links.map(link=>link.href))];uniqueLinks.forEach(function(link){var linkElem=document.createElement("a");linkElem.href=link;linkElem.textContent=link;linkElem.className="block mb-2 text-blue-500";linksDiv.appendChild(linkElem)})})();

Measure Page Load Time

Evaluate the loading performance of a web page with this bookmarklet. It calculates the time taken for the page to load and displays the result in milliseconds.

javascript:(function(){var css=document.createElement("style");css.innerHTML="@import url('https://cdnjs.cloudflare.com/ajax/libs/tailwindcss/2.2.19/tailwind.min.css')";document.head.appendChild(css);var createModal=function(){var modalBg=document.createElement("div");modalBg.className="fixed inset-0 flex items-center justify-center bg-black bg-opacity-50 z-50";var modal=document.createElement("div");modal.className="relative bg-white rounded-md shadow-lg p-6 max-w-md mx-auto flex flex-col space-y-4";modalBg.appendChild(modal);var closeModal=function(){modalBg.remove()};modalBg.addEventListener("click",function(e){e.target===modalBg&&closeModal()});document.body.appendChild(modalBg);return{modal:modal,close:closeModal}};var loadTimeModal=createModal();loadTimeModal.modal.innerHTML='<h2 class="text-xl font-semibold mb-4">Page Load Time:</h2><div></div><button class="bg-blue-500 text-white px-4 py-2 rounded-md mt-4" onclick="this.parentElement.parentElement.remove()">Close</button>';var loadTimeDiv=loadTimeModal.modal.querySelector("div");var loadTime=window.performance.timing.domContentLoadedEventEnd-window.performance.timing.navigationStart;loadTimeDiv.textContent=loadTime+" milliseconds";})();

Analyze Anchor Text Distribution

Evaluate the distribution of anchor text on a web page with this bookmarklet. It extracts the anchor text of all links on the page and provides a summary of their frequency in the browser.

javascript:(function(){var css=document.createElement("style");css.innerHTML="@import url('https://cdnjs.cloudflare.com/ajax/libs/tailwindcss/2.2.19/tailwind.min.css')";document.head.appendChild(css);var createModal=function(){var modalBg=document.createElement("div");modalBg.className="fixed inset-0 flex items-center justify-center bg-black bg-opacity-50 z-50";var modal=document.createElement("div");modal.className="bg-white rounded-md shadow-lg max-w-2xl mx-auto h-3/5 overflow-auto flex flex-col";modalBg.appendChild(modal);var closeModal=function(){modalBg.remove()};modalBg.addEventListener("click",function(e){e.target===modalBg&&closeModal()});var modalHeader=document.createElement("div");modalHeader.className="bg-gray-100 p-4 flex justify-between items-center";modal.appendChild(modalHeader);var modalTitle=document.createElement("h2");modalTitle.className="text-xl font-semibold";modalTitle.textContent="Anchor Text Distribution:";modalHeader.appendChild(modalTitle);var closeButton=document.createElement("button");closeButton.textContent="Close";closeButton.className="bg-blue-500 text-white px-3 py-1 rounded-md";closeButton.addEventListener("click",closeModal);modalHeader.appendChild(closeButton);var content=document.createElement("div");content.className="p-4";modal.appendChild(content);document.body.appendChild(modalBg);return content};var anchorModal=createModal();var anchorList=document.createElement("ul");anchorList.className="list-disc list-inside";anchorModal.appendChild(anchorList);var anchors=document.querySelectorAll("a");var anchorTextCount={};anchors.forEach(function(anchor){var text=anchor.textContent.trim();anchorTextCount[text]=(anchorTextCount[text]||0)+1});Object.entries(anchorTextCount).forEach(function(entry){var listItem=document.createElement("li");listItem.textContent='"'+entry[0]+'": '+entry[1]+" occurrences";anchorList.appendChild(listItem)});})();

Check SSL/TLS Certificate Details

Quickly access the SSL/TLS certificate details of the current website with this bookmarklet. It opens the browser’s security information panel, allowing you to review the certificate’s validity and issuer.

javascript:(function(){var e=document.createElement("style");e.innerHTML="@import url('https://cdnjs.cloudflare.com/ajax/libs/tailwindcss/2.2.19/tailwind.min.css')";document.head.appendChild(e);var t=document.createElement("div"),n=window.navigator.userAgent.toLowerCase(),a="";-1!==n.indexOf("chrome")?a="<li>Click on the lock icon next to the URL in the address bar.</li><li>Click on 'Certificate' to view SSL/TLS certificate details.</li>":-1!==n.indexOf("firefox")?a="<li>Click on the lock icon next to the URL in the address bar.</li><li>Click on the right arrow next to 'Connection secure'.</li><li>Click on 'More Information' and go to the 'Security' tab.</li><li>Click on 'View Certificate' to view SSL/TLS certificate details.</li>":-1!==n.indexOf("safari")&&(a="<li>Click on the lock icon next to the URL in the address bar.</li><li>Click on 'Show Certificate' to view SSL/TLS certificate details.</li>");var o=location.protocol==="https:"?'<p>Open your browser\'s security information panel to view SSL/TLS certificate details. Follow these steps:</p><ul>'+a+"</ul>":'This site is not using HTTPS. No SSL/TLS certificate details available.';t.className="fixed inset-0 flex items-center justify-center bg-black bg-opacity-50 z-50",t.innerHTML='<div class="bg-white rounded-md shadow-lg p-6 max-w-md mx-auto relative flex flex-col space-y-4"><div class="overflow-auto max-h-60vh">'+o+'</div><button class="bg-blue-500 text-white px-4 py-2 rounded-md self-start mt-auto" onclick="this.parentNode.parentNode.remove()">Close</button></div>',document.body.appendChild(t)})();

Extract All Email Addresses

Extract all email addresses present on a web page with this bookmarklet. It scans the page’s content and displays a list of found email addresses in the browser.

javascript:(function(){var e=document.createElement("style");e.innerHTML="@import url('https://cdnjs.cloudflare.com/ajax/libs/tailwindcss/2.2.19/tailwind.min.css')";document.head.appendChild(e);var t=document.createElement("div"),n=document.body.innerText,o=/[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}/g,a=n.match(o)||[],i=a.length?'<ul>'+a.map(function(e){return"<li>"+e+"</li>"}).join("")+"</ul>":"No email addresses found.";t.className="fixed inset-0 flex items-center justify-center bg-black bg-opacity-50 z-50",t.innerHTML='<div class="bg-white rounded-md shadow-lg p-6 max-w-md mx-auto relative flex flex-col space-y-4"><div class="overflow-auto max-h-60vh"><h2 class="text-xl font-semibold mb-4">Email Addresses Found:</h2>'+i+'</div><button class="bg-blue-500 text-white px-4 py-2 rounded-md self-start mt-auto" onclick="this.parentNode.parentNode.remove()">Close</button></div>',document.body.appendChild(t)})();

Display Accessibility Warnings

Identify potential accessibility issues on a web page with this bookmarklet. It checks for common accessibility pitfalls, such as missing alt attributes and improper header structure, and provides warnings in the browser .

javascript:(function(){var e=document.createElement("style");e.innerHTML="@import url('https://cdnjs.cloudflare.com/ajax/libs/tailwindcss/2.2.19/tailwind.min.css')";document.head.appendChild(e);var t=document.createElement("div");t.className="fixed inset-0 flex items-center justify-center bg-black bg-opacity-50 z-50";var n=document.createElement("div");n.className="relative bg-white rounded-md shadow-lg p-6 max-w-md mx-auto flex flex-col space-y-4";t.appendChild(n);var o=document.createElement("div");o.className="overflow-auto max-h-60vh";n.appendChild(o);var a=document.createElement("button");a.textContent="Close",a.className="bg-blue-500 text-white px-4 py-2 rounded-md self-start mt-auto",n.appendChild(a),t.addEventListener("click",function(e){e.target===t&&t.remove()}),a.addEventListener("click",function(){t.remove()}),document.body.appendChild(t),o.innerHTML='<h2 class="text-xl font-semibold mb-4">Accessibility Warnings:</h2>',function(){var e=document.querySelectorAll("img:not([alt])");e.length>0&&(o.innerHTML+='<p class="text-red-600">Images without alt attributes detected.</p>');var t=["H1","H2","H3","H4","H5","H6"],n=0;t.forEach((function(t,e){if(document.getElementsByTagName(t).length>0){e>n+1&&(o.innerHTML+='<p class="text-red-600">Improper header structure detected: '+t+" follows H"+(e+1)+".</p>"),n=e}}))}()})();

View Cache-Control Headers

Determine the cache-control headers set for the current web page with this bookmarklet. It fetches the current webpage using an HTTP HEAD request and displays the value of the ‘cache-control’ header. If the ‘cache-control’ header is not found, it displays a message indicating that no ‘cache-control’ headers were found.

javascript:(function(){var e=document.createElement("style");e.innerHTML="@import url('https://cdnjs.cloudflare.com/ajax/libs/tailwindcss/2.2.19/tailwind.min.css')";document.head.appendChild(e);var t=document.createElement("div");t.className="fixed inset-0 flex items-center justify-center bg-black bg-opacity-50 z-50";var n=document.createElement("div");n.className="relative bg-white rounded-md shadow-lg p-6 max-w-md mx-auto flex flex-col space-y-4";t.appendChild(n);var o=document.createElement("div");o.className="overflow-auto max-h-60vh";n.appendChild(o);var a=document.createElement("button");a.textContent="Close",a.className="bg-blue-500 text-white px-4 py-2 rounded-md self-start mt-auto",n.appendChild(a),t.addEventListener("click",function(e){e.target===t&&t.remove()}),a.addEventListener("click",function(){t.remove()}),document.body.appendChild(t),fetch(location.href,{method:"HEAD"}).then(function(e){o.innerHTML='<h2 class="text-xl font-semibold mb-4">Cache-Control Headers:</h2>';var t=e.headers.get("cache-control");t?o.innerHTML+=t:o.innerHTML+="No cache-control headers found."}).catch(function(e){o.innerHTML='<h2 class="text-xl font-semibold mb-4">Request failed:</h2>'+e})})();

Check for Mixed Content

Identify mixed content on a web page with this bookmarklet. It detects insecure HTTP resources on an HTTPS page and provides a list of such resources in the browser. If no mixed content is detected, the modal indicates that as well. If the page is not using HTTPS, the modal states that the mixed content check is not applicable.

javascript:(function(){var e=document.createElement("style");e.innerHTML="@import url('https://cdnjs.cloudflare.com/ajax/libs/tailwindcss/2.2.19/tailwind.min.css')";document.head.appendChild(e);var t=document.createElement("div");t.className="fixed inset-0 flex items-center justify-center bg-black bg-opacity-50 z-50";var n=document.createElement("div");n.className="relative bg-white rounded-md shadow-lg p-6 max-w-md mx-auto flex flex-col space-y-4";t.appendChild(n);var o=document.createElement("div");o.className="overflow-auto max-h-60vh";n.appendChild(o);var a=document.createElement("button");a.textContent="Close",a.className="bg-blue-500 text-white px-4 py-2 rounded-md self-start mt-auto",n.appendChild(a),t.addEventListener("click",function(e){e.target===t&&t.remove()}),a.addEventListener("click",function(){t.remove()}),document.body.appendChild(t),o.innerHTML='<h2 class="text-xl font-semibold mb-4">Mixed Content Check:</h2>',function(){if(location.protocol==="https:"){var e=[];document.querySelectorAll('link[href^="http:"], script[src^="http:"], img[src^="http:"]').forEach((function(t){e.push(t.href||t.src)})),e.length>0?(o.innerHTML+='<p class="text-red-600">Mixed Content Detected:</p>',e.forEach((function(e){o.innerHTML+='<p class="text-gray-700">'+e+"</p>"}))):o.innerHTML+='<p class="text-green-600">No mixed content detected.</p>'}else o.innerHTML+='<p class="text-yellow-600">This page is not using HTTPS. Mixed content check is not applicable.</p>'}()})();

List All Iframes on Page

Generate a list of all iframes present on a web page with this bookmarklet. It displays the source URLs of the iframes, providing an overview of the embedded content on the page.

javascript:(function(){var e=document.createElement("style");e.innerHTML="@import url('https://cdnjs.cloudflare.com/ajax/libs/tailwindcss/2.2.19/tailwind.min.css')";document.head.appendChild(e);var t=document.createElement("div");t.className="fixed inset-0 flex items-center justify-center bg-black bg-opacity-50 z-50";var n=document.createElement("div");n.className="relative bg-white rounded-md shadow-lg p-6 max-w-md mx-auto flex flex-col space-y-4";t.appendChild(n);var o=document.createElement("div");o.className="overflow-auto max-h-60vh";n.appendChild(o);var a=document.createElement("button");a.textContent="Close",a.className="bg-blue-500 text-white px-4 py-2 rounded-md self-start mt-auto",n.appendChild(a),t.addEventListener("click",function(e){e.target===t&&t.remove()}),a.addEventListener("click",function(){t.remove()}),document.body.appendChild(t),o.innerHTML='<h2 class="text-xl font-semibold mb-4">Iframes on Page:</h2>',function(){var e=document.querySelectorAll("iframe");e.length>0?e.forEach((function(e){o.innerHTML+='<p class="text-gray-700">'+e.src+"</p>"})):o.innerHTML+='<p class="text-yellow-600">No iframes found on the page.</p>'}()})();

Display Social Media Meta Tags

Examine the social media meta tags of a web page with this bookmarklet. It retrieves and displays the Open Graph and Twitter Card meta tags in the browser console, allowing you to assess their content.

javascript:(function(){var e=document.createElement("style");e.innerHTML="@import url('https://cdnjs.cloudflare.com/ajax/libs/tailwindcss/2.2.19/tailwind.min.css')";document.head.appendChild(e);var t=document.createElement("div");t.className="fixed inset-0 flex items-center justify-center bg-black bg-opacity-50 z-50";var n=document.createElement("div");n.className="relative bg-white rounded-md shadow-lg p-6 max-w-md mx-auto flex flex-col space-y-4";t.appendChild(n);var o=document.createElement("div");o.className="overflow-auto max-h-60vh";n.appendChild(o);var a=document.createElement("button");a.textContent="Close",a.className="bg-blue-500 text-white px-4 py-2 rounded-md self-start mt-auto",n.appendChild(a),t.addEventListener("click",function(e){e.target===t&&t.remove()}),a.addEventListener("click",function(){t.remove()}),document.body.appendChild(t),o.innerHTML='<h2 class="text-xl font-semibold mb-4">Social Media Meta Tags:</h2>',function(){var e=document.querySelectorAll('meta[property^="og:"]'),t=document.querySelectorAll('meta[name^="twitter:"]');(e.length>0||t.length>0)?(e.forEach((function(e){o.innerHTML+='<p class="text-gray-700">'+e.getAttribute("property")+": "+e.content+"</p>"})),t.forEach((function(e){o.innerHTML+='<p class="text-gray-700">'+e.getAttribute("name")+": "+e.content+"</p>"}))):o.innerHTML+='<p class="text-yellow-600">No social media meta tags found on the page.</p>'}()})();

Display Mobile Viewport Meta Tag

Review the mobile viewport meta tag of a web page with this bookmarklet. It retrieves the viewport meta tag and displays its content in the browser console, allowing you to assess the viewport settings for mobile devices.

javascript:(function(){let t=document.createElement("style");t.innerHTML="@import url('https://cdnjs.cloudflare.com/ajax/libs/tailwindcss/2.2.19/tailwind.min.css')",document.head.appendChild(t);let e=function(){let t=document.createElement("div");t.className="fixed inset-0 flex items-center justify-center bg-black bg-opacity-50 z-50",t.addEventListener("click",function(e){e.target===t&&t.remove()});let e=document.createElement("div");e.className="relative bg-white rounded-md shadow-lg p-6 max-w-md mx-auto";let n=document.createElement("div");n.className="overflow-auto max-h-96";let o=document.createElement("button");o.textContent="Close",o.className="bg-blue-500 text-white px-3 py-1 rounded-md self-start mt-auto",o.addEventListener("click",function(){t.remove()});let r=document.createElement("table");r.className="table-auto";let c=document.createElement("thead"),s=document.createElement("tr"),a=document.createElement("th");a.textContent="Mobile Viewport Meta Tag",s.appendChild(a),c.appendChild(s),r.appendChild(c);let i=document.createElement("tbody");let d=document.querySelector('meta[name="viewport"]');d?i.innerHTML=`<tr><td>${d.content}</td></tr>`:i.innerHTML="<tr><td>No mobile viewport meta tag found.</td></tr>",r.appendChild(i),e.appendChild(r),e.appendChild(o),e.appendChild(n),t.appendChild(e),document.body.appendChild(t)};e()})();

Detect Redirects

Detect HTTP redirects for the current URL with this bookmarklet. It performs a fetch request and identifies any redirects, providing details in the browser.

javascript:(function(){let t=document.createElement("style");t.innerHTML="@import url('https://cdnjs.cloudflare.com/ajax/libs/tailwindcss/2.2.19/tailwind.min.css')";document.head.appendChild(t);let e=function(){let t=document.createElement("div");t.className="fixed inset-0 flex items-center justify-center bg-black bg-opacity-50 z-50",t.addEventListener("click",function(e){e.target===t&&t.remove()});let e=document.createElement("div");e.className="relative bg-white rounded-md shadow-lg p-6 max-w-md mx-auto";let n=document.createElement("button");n.textContent="Close",n.className="bg-blue-500 text-white px-3 py-1 rounded-md self-start mt-auto",n.addEventListener("click",function(){t.remove()});let o=document.createElement("pre");fetch(location.href,{redirect:"manual"}).then(t=>{t.type==="opaqueredirect"?o.textContent=`Redirect detected. Redirect URL: ${t.url}`:o.textContent="No redirect detected."}).catch(t=>{console.warn("Request failed:",t)}),e.appendChild(o),e.appendChild(n),t.appendChild(e),document.body.appendChild(t)};e()})();

Extract Schema Markup Data

Analyze the Schema markup data (structured data) present on a web page with this bookmarklet. It retrieves and displays the JSON-LD or Microdata structured data in the browser console, allowing you to assess the markup used for search engine optimization.

javascript:(function(){let t=document.createElement("style");t.innerHTML="@import url('https://cdnjs.cloudflare.com/ajax/libs/tailwindcss/2.2.19/tailwind.min.css')";document.head.appendChild(t);let e=function(){let t=document.createElement("div");t.className="fixed inset-0 flex items-center justify-center bg-black bg-opacity-50 z-50",t.addEventListener("click",function(e){e.target===t&&t.remove()});let e=document.createElement("div");e.className="relative bg-white rounded-md shadow-lg p-6 max-w-md mx-auto";let n=document.createElement("button");n.textContent="Close",n.className="bg-blue-500 text-white px-3 py-1 rounded-md self-start mt-auto",n.addEventListener("click",function(){t.remove()});let o=document.createElement("pre");console.log("Schema Markup Data:");let i=document.querySelectorAll('script[type="application/ld+json"]'),r=document.querySelectorAll('[itemscope]');i.length>0&&(console.log("JSON-LD Structured Data:"),i.forEach(e=>{let t=document.createElement("div");t.textContent=e.textContent,o.appendChild(t)})),r.length>0&&(console.log("Microdata Structured Data:"),r.forEach(e=>{let t=document.createElement("div");t.textContent=e.outerHTML,o.appendChild(t)})),0===i.length&&0===r.length&&console.log("No Schema markup data found."),e.appendChild(o),e.appendChild(n),t.appendChild(e),document.body.appendChild(t)};e()})();

Show Page Title and Description

Display the title and meta description of a web page with this bookmarklet. It retrieves the title tag and meta description tag and provides their content in the browser console.

javascript:(function(){let modal=document.createElement('div');modal.className='fixed inset-0 flex items-center justify-center bg-black bg-opacity-50 z-50';modal.addEventListener('click',function(event){event.target===modal&&modal.remove()});let container=document.createElement('div');container.className='relative bg-white rounded-md shadow-lg p-6 max-w-md mx-auto';container.style.maxHeight='80vh';container.style.overflow='auto';let title=document.createElement('h2');title.className='text-xl font-semibold mb-4';title.textContent='Page Title and Description';container.appendChild(title);let table=document.createElement('table');table.className='border-collapse';let row1=document.createElement('tr');let row2=document.createElement('tr');let col1=document.createElement('td');col1.className='border border-gray-300 px-4 py-2';col1.textContent='Title';row1.appendChild(col1);let col2=document.createElement('td');col2.className='border border-gray-300 px-4 py-2';col2.textContent=document.title;row2.appendChild(col2);let metaDescription=document.querySelector('meta[name="description"]');if(metaDescription){let col3=document.createElement('td');col3.className='border border-gray-300 px-4 py-2';col3.textContent='Description';row1.appendChild(col3);let col4=document.createElement('td');col4.className='border border-gray-300 px-4 py-2';col4.textContent=metaDescription.content;row2.appendChild(col4);}table.appendChild(row1);table.appendChild(row2);container.appendChild(table);modal.appendChild(container);document.body.appendChild(modal);})();

List All Schema Types with Summary

Discover and analyze all Schema types present on a web page with this bookmarklet. It extracts the JSON-LD and Microdata structured data, lists the Schema types used, and provides a summary of each Schema instance.

javascript:(function(){var t=document.createElement("link");t.rel="stylesheet",t.href="https://cdnjs.cloudflare.com/ajax/libs/tailwindcss/2.2.19/tailwind.min.css",document.head.appendChild(t);var e=document.querySelectorAll('script[type="application/ld+json"]'),n=document.querySelectorAll("[itemscope]"),o=[];if(e.length>0&&e.forEach(function(e){try{var n=JSON.parse(e.textContent);Array.isArray(n)?n.forEach(function(e){o.push(e)}):o.push(n)}catch(e){console.warn("Error parsing JSON-LD data:",e)}}),n.length>0&&n.forEach(function(e){var t=e.getAttribute("itemtype"),n={},r=e.querySelectorAll("[itemprop]");r.forEach(function(e){var r=e.getAttribute("itemprop"),t=e.content||e.textContent.trim();n[r]=t}),o.push({"@context":"https://schema.org","@type":t,...n})}),o.length>0){var r=document.createElement("div");r.innerHTML='<div class="fixed z-10 inset-0 overflow-y-auto" aria-labelledby="modal-title" role="dialog" aria-modal="true"><div class="flex items-end justify-center min-h-screen pt-4 px-4 pb-20 text-center sm:block sm:p-0"><div class="fixed inset-0 bg-gray-500 bg-opacity-75 transition-opacity" aria-hidden="true"></div><span class="hidden sm:inline-block sm:align-middle sm:h-screen" aria-hidden="true">&#8203;</span><div class="inline-block align-bottom bg-white rounded-lg text-left overflow-hidden shadow-xl transform transition-all sm:my-8 sm:align-middle sm:max-w-lg sm:w-full"><div class="bg-white px-4 pt-5 pb-4 sm:p-6 sm:pb-4"><div class="sm:flex sm:items-start"><div class="mt-3 text-center sm:mt-0 sm:text-left w-full"><h3 class="text-lg leading-6 font-medium text-gray-900" id="modal-title">Schema Types with Summary</h3><div class="mt-2">'+o.map(function(e){return'<p class="text-sm text-gray-500"><strong>Schema Type:</strong> '+e["@type"]+"<br><strong>Summary:</strong><br><pre>"+JSON.stringify(e,null,2)+"</pre></p>"}).join("")+'</div></div></div><div class="bg-gray-50 px-4 py-3 sm:px-6 sm:flex sm:flex-row-reverse"><button type="button" class="mt-3 w-full inline-flex justify-center rounded-md border border-transparent shadow-sm px-4 py-2 bg-blue-600 text-base font-medium text-white hover:bg-blue-700 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-blue-500 sm:mt-0 sm:ml-3 sm:w-auto sm:text-sm" onclick="this.closest(\'.fixed\').remove();">Close</button></div></div></div></div>',document.body.appendChild(r)}else alert("No Schema markup data found.")})();

These are just a few examples of the incredible things bookmarklets can do. Feel free to experiment and create your own — bookmarklets are all about making the web work for you!

Stay tuned, because up next, we’re going to address some common questions and misconceptions about Chrome Bookmarklets. Let’s bust some myths together!

We’ve come a long way on our Chrome Bookmarklets journey, and you’re already a bookmarklet aficionado! But hey, I get it — bookmarklets can raise some questions, and there are a few misconceptions floating around. So, in this section, let’s clear the air and answer some common questions about bookmarklets. Let’s get started!

What is the Difference Between a Bookmarklet and a Browser Extension?

Great question! While bookmarklets and browser extensions can both enhance your browsing experience, there are some key differences:

• Simplicity: Bookmarklets are simple JavaScript snippets saved as bookmarks. Browser extensions, on the other hand, are more complex and often involve multiple files and programming languages.
• Installation: Bookmarklets can be created and used with just a few clicks, while browser extensions require installation from a web store or developer’s website.
• Permissions: Bookmarklets only run when you click them, and they don’t require special permissions. Extensions may require permission to access certain data or features in your browser.

In short, bookmarklets are lightweight and easy to use, making them perfect for quick tasks and customizations!

Are Bookmarklets Safe to Use?

Safety first, right? Bookmarklets are generally safe, but there are a few things to keep in mind:

• Source: Only use bookmarklets from trusted sources or create your own. Be cautious of bookmarklets that ask for sensitive information or perform unexpected actions.
• Code: Take a moment to review the JavaScript code in a bookmarklet. If something looks fishy or you don’t understand it, it’s best to steer clear.

With a little vigilance, you can safely enjoy the benefits of bookmarklets!

Can Bookmarklets Access My Private Data?

Nope! Bookmarklets can only interact with the web page you’re currently viewing, and they can’t access your browser history, stored passwords, or other sensitive data. Rest assured, your privacy is secure!

And there you have it! I hope that clears things up and gives you confidence as you explore the world of Chrome Bookmarklets. Don’t forget, bookmarklets are all about making the web a more enjoyable and personalized place for you!

Coming up, we’ll take a look at some potential issues you might encounter with bookmarklets and how to troubleshoot them. Don’t worry, I’ve got your back!

Hey, even the best of us run into hiccups sometimes! While using Chrome Bookmarklets is usually smooth sailing, there might be moments when things don’t go as planned. But don’t worry — I’m here to help you navigate any challenges and keep your bookmarklet game strong. Let’s look at some common issues you might encounter and how to troubleshoot them.

“My Bookmarklet Isn’t Working!”

Oh no! If your bookmarklet isn’t doing its magic, here are some things to check:

• Syntax: Make sure the bookmarklet code is correct and doesn’t have any syntax errors. A missing parenthesis or quotation mark could be the culprit.
• Website Compatibility: Some websites use security features like Content Security Policy (CSP) that may prevent bookmarklets from running. If that’s the case, try using the bookmarklet on a different website to see if it works.
• Browser Version: Make sure you’re using the latest version of Chrome. An outdated browser might affect bookmarklet functionality.

“I Accidentally Deleted My Bookmarklet!”

No worries, it happens to the best of us! If you accidentally deleted a bookmarklet from your bookmarks bar, you can recreate it using the same steps we covered earlier. If you don’t remember the code, check if you have a backup or reach out to the original source for the bookmarklet.

“The Bookmarklet Code Looks Scrambled in the Bookmark Manager!”

Chrome’s bookmark manager sometimes shows bookmarklet code as a single, scrambled line. That’s okay! You don’t need to edit it directly in the bookmark manager. If you want to modify the code, copy it into a code editor, make your changes, and then create a new bookmarklet with the updated code.

“Can I Use Bookmarklets on Mobile Devices?”

Yes, you can! Bookmarklets can also be used on mobile browsers like Chrome for Android or Safari for iOS. The process for adding and running bookmarklets might be slightly different on mobile devices, so be sure to check the instructions for your specific device.

And that’s a wrap on troubleshooting! I hope these tips help you overcome any bookmarklet hurdles and keep you cruising smoothly.

It’s been a blast exploring the world of Chrome Bookmarklets with you. As we wrap up, let’s do a quick recap and share some final thoughts on this amazing tool that can transform your browsing experience. Let’s finish strong!

Well, my friend, we’ve reached the end of our incredible journey through the land of Chrome Bookmarklets! It’s been an absolute pleasure guiding you along the way, and I’m thrilled to see you become a bookmarklet pro.

Let’s take a moment to reflect on everything we’ve learned:

• What are bookmarklets? We discovered that bookmarklets are small, yet powerful JavaScript snippets that you can save as bookmarks in Chrome. They’re like magical shortcuts that enhance and customize your browsing experience.
• Creating and running bookmarklets: We learned how to craft our own bookmarklets and run them in Chrome with just a few clicks. We explored cool examples like highlighting links, counting words, and generating QR codes.
• Understanding and troubleshooting: We answered common questions, busted bookmarklet myths, and learned how to troubleshoot issues. We also learned about the differences between bookmarklets and browser extensions, as well as the importance of bookmarklet safety.

With all this knowledge, you’re now equipped to explore the limitless possibilities of bookmarklets. Whether you’re boosting productivity, improving accessibility, or simply having fun, bookmarklets are here to make the web a more personalized and enjoyable place for you.

As we part ways, remember that the spirit of bookmarklets is all about creativity and curiosity. So, go forth and experiment, discover, and create bookmarklets that reflect your unique style and needs. The web is your canvas, and bookmarklets are your brushes.

If you have any questions or would like to inquire about my service, please feel free to reach out on my website @ https://nzouat.com/contact and I would be more than happy to assist you.