A HTML5 validation library, using a JavaScript port of the excellent TIDY library

Latest Version

Version
1.4
Update
August 28, 2012
Size
1.0MiB
Developer
kingsquare.nl
Category
Users
1,000+
Rating
2.86111 ★
Manifest Version
2
Web Store Status
Languages Support
English
See more
Permissions
Http://*/*
See more

Kingsquare HTML Validator Extension

This extension brings the the TIDY HTML Validation library to your browser. You will no longer need remote services to validate your HTML(5). This is the first offline HTML validator for Chrome.

For more information on the project, see http://www.kingsquare.nl/html-validator

** PLEASE NOTE **

Please restart your browser after installing the extension.

Open the development tools panel to activate the validator. Every page will get validated automatically, check the flag at the end of your address bar to see the current status. See the last tab of the development tools to get a full report.
Read more

Source Manifest.json

{"update_url":"http://clients2.google.com/service/update2/crx","name": "Kingsquare HTML Validator","version": "1.4","manifest_version": 2,"description": "A HTML5 validation library, using a JavaScript port of the excellent TIDY library","devtools_page": "devtools.html","background":{"scripts":["background.js"]},"icons": {"16": "16x16.png", "48": "48x48.png", "128": "128x128.png"},"page_action": {"default_icon": "loading.gif","default_title": "Checkout Development Tools / HTML validator for more info"},"content_scripts": [{"matches": ["http://*/*", "https://*/*"],"js": ["content.js"]}], "permissions": [ "http://*/*" ], "offline_enabled": true}
Read more

How to download and manually install Kingsquare HTML Validator extension for Chrome

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

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

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

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

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

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

Similar Extensions

icon

Emmet Re:view Extension · Developer Tools 1,000+ 162 ★ 74.65KiB

icon

performance-HTML Extension · Developer Tools 1,000+ 8 ★ 19.31KiB

icon

HTML Validator Extension · Productivity 1,000+ 0 ★ 51.64KiB

icon

PageSpeed Insights (MV3) Extension · Developer Tools 1,000+ 77 ★ 524KiB

icon

HTML Validator Extension · Developer Tools 1,000+ 37 ★ 2.5MiB

icon

HTML5 Form validation remover Extension · Developer Tools 1,000+ 15 ★ 5.47KiB

icon

Web Developer Checklist Extension · Developer Tools 1,000+ 54 ★ 32.65KiB

icon

jQuery Debugger Extension · Developer Tools 1,000+ 110 ★ 88.52KiB

icon

HTML5 Outliner Extension · Productivity 1,000+ 262 ★ 25.23KiB

icon

SEO-HTML Extension · Developer Tools 1,000+ 10 ★ 16.92KiB

icon

Xdebug helper Extension · Developer Tools 1,000+ 429 ★ 70.13KiB

icon

Validity Extension · Developer Tools 1,000+ 210 ★ 108KiB

icon

LiveReload Extension · Developer Tools 1,000+ 808 ★ 60.78KiB

icon

CSS remove and combine Extension · Developer Tools 1,000+ 115 ★ 270KiB

icon

Emmet LiveStyle Extension · Developer Tools 1,000+ 351 ★ 356KiB

icon

Code Formatter Extension · Developer Tools 1,000+ 35 ★ 5.9MiB

icon

CSS Shapes Editor Extension · Developer Tools 1,000+ 101 ★ 84.76KiB

icon

ARIA Validator Extension · Developer Tools 1,000+ 4 ★ 102KiB

icon

Swoosh Cookie and Local Storage Specialist Extension · Developer Tools 1,000+ 121 ★ 720KiB

icon

Live CSS Editor Extension · Developer Tools 1,000+ 182 ★ 24.38KiB

icon

CSS3 Generator Extension · Developer Tools 1,000+ 60 ★ 346KiB

icon

Quick source viewer Extension · Developer Tools 1,000+ 115 ★ 74.21KiB

icon

Semantic inspector Extension · Developer Tools 1,000+ 40 ★ 49.44KiB

icon

Chrome Logger Extension · Developer Tools 1,000+ 132 ★ 21.02KiB

User reviews

icon

Patrick Gallagher (ID: 000000e557cb9b64) Voted 1 ★ - Updated 02/28/2019 Might like it if I could get it to do something. Does not seem to check anything.

icon

Lodewijk Abrahams (ID: 0000000d38340e89) Voted 2 ★ - Updated 11/27/2017 Why does this module not qualified the display video's at the nu.nl?

icon

Paul Brown (ID: 0000005ff0047bb3) Voted 3 ★ - Updated 06/23/2016 too finicky Should just show errors

icon

maksim (ID: 0000003c7c38ddd7) Voted 4 ★ - Updated 10/29/2015 Good plugin, but the output format is **horrible**...

icon

Raymond DeCampo (ID: 000000181aba6698) Voted 2 ★ - Updated 10/15/2015 Tried this on a site that passed the W3C validator and got spurious warnings (e.g. no DOCTYPE even though DOCTYPE existed, warnings about leftmargin on when there was no such atribute). Also does not work on AJAX sites as far as I could see. Final nail is that if developer tools were not already open, requires a reload to validate.