To check the color contrast between foreground and background of the texts

Latest Version

Version
3.8.4
Update
March 2, 2024
Size
163KiB
Developer
Category
Users
70,000+
Rating
4.19231 ★
Manifest Version
3
Web Store Status
Languages Support
English
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Permissions
ActiveTab
Storage
WebNavigation
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WCAG Color contrast checker Extension

It checks the color contrast between the foreground and background of the elements that are in the page according to the WCAG 2.2.

It evaluates the contrast on all elements of the page considering their computed style for the color and background-color CSS properties. In case of these colors are defined with RGBA values, it also considers the opacity to deduce the real color that finally is show.

It can simulate color blindness and evaluate the contrast for the simulations. By this way, developers can see how the pages look for colorblind users.

The tool also includes two fields in which the colors can be introduced manually to be tested. It also allows to pick the color directly from the documents.

Finally, it auto-refreshes when DOM of the page changes (addition or removing elements), but if the page has many changes, this behavior can be de-activated.

Privacy statement on: https://rumoroso.bitbucket.io/
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Source Manifest.json

{"update_url": "https://clients2.google.com/service/update2/crx", "name": "__MSG_extensionName__", "description": "__MSG_extensionDescription__", "author": "Jorge Rumoroso", "manifest_version": 3, "version": "3.8.4", "icons": { "48": "icons/icon_large.png", "96": "icons/icon_large_96x96.png", "128": "icons/icon128_with_margin.png" }, "default_locale": "en", "content_scripts": [ { "matches": [ "" ], "js": [ "content_scripts/contrastChecker.js" ], "css": [ "css/inDocumentStyles.css" ], "run_at": "document_end", "all_frames": true } ], "background": { "service_worker": "service-worker.js" }, "permissions": [ "activeTab", "storage", "webNavigation" ], "host_permissions": [ "" ], "action": { "default_icon": { "32": "icons/icon_overlay.png" }, "default_title": "WCAG Color contrast checker" }, "web_accessible_resources": [ { "resources": [ "html/*", "css/*", "getFrameId", "_locales/*" ], "matches": [ "" ], "extension_ids": [] } ]}
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How to download and manually install WCAG Color contrast checker extension for Chrome

Looking for a way to install WCAG Color contrast checker extensions for Chrome, you can search for them in the Chrome Web Store, clicking the "Add to Chrome" button, and following the straightforward process.

However, you may need to install WCAG Color contrast checker extensions manually, this article outlines two simple methods to effortlessly install WCAG Color contrast checker extensions, whether they come as unpacked folders in compressed formats like .zip or as .crx files.

Method 1: Download WCAG Color contrast checker extension and manually install through Drag &Drop

If you ever need to manually install a WCAG Color contrast checker extension for Chrome, don't worry, it's a simple process. Just follow these easy steps, and you will have your extension ready to use in no time.

Step 1: Download the WCAG Color contrast checker Extension by clicking the "Download CRX" button on the website.

Look for the WCAG Color contrast checker extension you wish to install. Go to the website and download the WCAG Color contrast checker extension package, which is usually a .CRX file and comes in a zipped file. Here ".crx" file is the format for WCAG Color contrast checker extension that contains all the data.

Step 2: Extract &Arrange Files

Once the file is downloaded, extract that file into its own folder. Similarly, give that extension files a permanent home. In other words, keep it in a folder that you don't accidentally delete it because these files will be needed to make that extension work.

Step 3: Go to the Chrome Extensions Page

Open Google Chrome and in the address bar, type chrome://extensions; it will open the Google Chrome extensions page. Make sure that "My extensions" is selected in the sidebar.

Step 4: Drag and Drop the Extension

Now, go to the folder where you extracted the WCAG Color contrast checker extension and drag &drop the extension file from there anywhere onto the extension page within Google Chrome.

Step 5: Complete the Installation

Once you drag and drop the extension file, follow the steps that Google Chrome takes you through. Similarly, if the extension file is of .crx file format, you will be required to review the permissions and then add the extension.

Now, you can manage that added extension as you would like to with any other Chrome extension that you added through Chrome Webstore. Its icon will also appear in the Google Chrome Menu on the right side of the address bar once you activate it.

Method 2: Download WCAG Color contrast checker extension for Chrome and install in Developer Mode

This is another method to install WCAG Color contrast checker extension manually, but the twist is that here, you install by enabling the developer mode option provided in Google Chrome. This mode is commonly used for testing extensions or running unpublished tools.

Step 1: Download the WCAG Color contrast checker extension file

Select and download the WCAG Color contrast checker extension by clicking the 'Download CRX' button on the website.

Step 2: Extract the downloaded contents

Convert the file to a ZIP file if it is in CRX format then extract the WCAG Color contrast checker extension zip file or folder that you downloaded. Make sure you extract it using the same folder name and keep it safely in another folder, so you don't delete it by mistake. The extracted folder will be needed to keep your WCAG Color contrast checker extension running.

Step 3: Open Chrome Extension Setting Page

In the address bar of Google Chrome, type chrome://extensions and open the Chrome Extension Page.

Step 4: Enable Developer Mode

After opening the Chrome Extension page, look at the top right side, and you will find the toggle option of "Developer mode."Simply enable that developer mode option.

Step 5: Load the Unpacked Extension

Once you enable the developer mode option, you will see the menu of Load Unpacked, Pack Extensions and Update. From that, select the option "Load unpacked."

Step 6: Select the Extension Folder

Once the pop-up opens upon clicking Load unpacked, select the WCAG Color contrast checker extension directory and click on the "Select Folder "button.

Step 7: Confirm and Install

After you select an extension folder of a Google Chrome extension you're installing manually, confirm its installation for the final time and let the installation complete.

Conclusion

Here we've made a step-by-step guide on How to manually install WCAG Color contrast checker extension in 2 ways. We hope this guide proves helpful.

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User reviews

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Sam Dhinakaran (ID: 000000ac954ab55d) Voted 3 ★ - Updated 07/07/2023 some times it's not picking all colors & automatically some coors are getting grouped.

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Shura Chaikina (ID: 00000037dc350d4f) Voted 5 ★ - Updated 07/29/2022 Cool!

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S LT (ID: 00000081b4a4d561) Voted 4 ★ - Updated 06/04/2022 It would be nice to be able to select which side of the page the panel appears on (right side as well as the left side) because some, in fact most sites have left side navigation panels.

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Juan Pablo Amado (ID: 000000b1277a8ad7) Voted 5 ★ - Updated 11/29/2021 Simple, efectivo y útil. Debería tener una interfaz un poco más sencilla pero igual funciona bien.

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Adrienn Tollas (ID: 00000057b1776dc7) Voted 4 ★ - Updated 06/03/2021 Really useful tool when testing for accessibility, but i wish one could change the position of the panel to the right side. do you think this update could happen soon?