Add HTML Validator in Developer Tools

Latest Version

Version
0.9.9.8
Update
December 28, 2022
Size
2.5MiB
Developer
gueury.com
Category
Users
40,000+
Rating
3.35135 ★
Manifest Version
3
Web Store Status
Languages Support
English (United States)
See more
Permissions
Storage
ActiveTab
ClipboardWrite
WebNavigation
Scripting
See more

HTML Validator Extension

This is the of HTML Validator extension for Chrome Manifest V3.
It checks the code, syntax, of your HTML 5 pages.

HTML Validator for Chrome is a browser extension that adds HTML validation inside Developer Tools of Chrome. The number of errors of a HTML page is seen with an icon in the browser status bar. The details is seen in the developer tools.

The extension is based on HTML Tidy. The algorithm was originally developed by the Web Consortium W3C. The algorithm is embedded inside your browser and makes the validation locally on your machine, without sending HTML to a third party server.

HTML Tidy is a helpful program that tries to help people to correct their HTML errors. It finds HTML errors and classifies them in 3 categories:
* errors: HTML errors that Tidy cannot fix or understand.
* warnings: HTML errors that Tidy can fix automatically
* (optional) accessibility warnings: HTML warnings for the 3 priority levels defined in W3c WAI

There is also an automatic \"Clean up\" button that will do his best to propose you a cleaned version of your page, without errors.

For any question, mail me at [email protected] or log a bug in:
> https://gitlab.com/mgueury/html_validator/issues
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Source Manifest.json

{"update_url": "https://clients2.google.com/service/update2/crx", "name": "HTML Validator", "version": "0.9.9.8", "manifest_version": 3, "description": "Add HTML Validator in Developer Tools", "devtools_page": "tidy_devtools.html", "options_page": "common/tidy_option.html", "homepage_url": "http://www.gueury.com/mozilla", "web_accessible_resources": [{ "resources": [ "*"], "matches": [""] }], "background": { "service_worker": "tidy_service_worker.js" }, "icons": { "16": "skin/default_icon16.png", "48": "skin/default_icon48.png", "128": "skin/default_icon128.png" }, "action": { "default_icon": "skin/disabled.png", "default_title": "HTML validator", "default_popup": "tidy_popup.html" }, "content_scripts": [{ "matches": [""], "js": ["tidy_content.js"] }], "permissions": [ "storage", "activeTab", "clipboardWrite", "webNavigation", "scripting" ], "host_permissions": [ "" ], "offline_enabled": true}
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How to download and manually install HTML Validator extension for Chrome

Looking for a way to install HTML Validator 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 HTML Validator extensions manually, this article outlines two simple methods to effortlessly install HTML Validator extensions, whether they come as unpacked folders in compressed formats like .zip or as .crx files.

Method 1: Download HTML Validator extension and manually install through Drag &Drop

If you ever need to manually install a HTML Validator 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 HTML Validator Extension by clicking the "Download CRX" button on the website.

Look for the HTML Validator extension you wish to install. Go to the website and download the HTML Validator extension package, which is usually a .CRX file and comes in a zipped file. Here ".crx" file is the format for HTML Validator 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 HTML Validator 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 HTML Validator extension for Chrome and install in Developer Mode

This is another method to install HTML Validator 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 HTML Validator extension file

Select and download the HTML Validator 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 HTML Validator 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 HTML Validator 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 HTML Validator 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 HTML Validator extension in 2 ways. We hope this guide proves helpful.

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User reviews

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Carmody Staff (ID: 00000063ac2df949) Voted 4 ★ - Updated 12/22/2022 Pretty decent, but it doesn't seem to be fully HTML5 compliant. It didn't like me using "checked" instead of checked="checked", both of which are valid for HTML5.

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Віталій Мосейчук (ID: 000000a97aaafd8a) Voted 1 ★ - Updated 11/10/2022 Не работает с первого раза, куча раз подгружать надо. Ужас.

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Deloo (ID: 000000bff3497edb) Voted 3 ★ - Updated 04/25/2022 Does the job but doesn't update the page URL after clicking a link... makes it unusable

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Сергей Кореневский (ID: 0000001f2feb9dc6) Voted 1 ★ - Updated 03/02/2022 Ошибка тега, я так и не понял какого тега.

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John Barounis (ID: 000000c1ba04f589) Voted 5 ★ - Updated 09/16/2021 Good, it is very nice that can see the source directly from the HTML validator tab in dev tools so to inspect the errors... Thanks.