W3C Validator Errors

Checking the web page HTML validity using the validator.w3.org validation api

As of May 2026, W3C Validator Errors has 26 users in the Developer Tools category.

Usersup 8.3 percent+8.3%
26
26
Ratingno change0%
— reviews
Reviewsno change0%
Version
1.0
Manifest V3

History

5 snapshots

Tracking since Apr 1, 2026.

34.82923.2Apr 1, 2026May 31, 2026
View as table
DateUsersRatingReviewsVersion
Apr 1, 2026241.0
Apr 21, 2026251.0
May 6, 2026341.0
May 17, 2026291.0
May 31, 2026281.0
Now261.0

Permissions & access

Permissions
scriptingactiveTab
Host access
https://validator.w3.org/*

Screenshots

W3C Validator Errors screenshot 1

About

Checking the web page HTML validity using the validator.w3.org validation api, Html validity is essential for web accessibility.

Technical

Version
1.0
Manifest
V3
Size
18.4KiB
Min Chrome
88
Languages
1
Featured
No

Metadata

ID
ckhaiajkibbcblhelfjkopeihmaiobhp
Developer ID
ua7cf533d6c0311a2d8b665719fd339e7
Developer Email
[email protected]
Created
May 21, 2025
Last Updated (Store)
May 21, 2025
Last Scraped
May 31, 2026
Website
Support URL
Privacy Policy

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Data sourced from the Chrome Web Store · last verified May 31, 2026.