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HTML validator

Chrome extension by drjo7178 · Productivity · Developer

A Chrome extension in Productivity · Developer with 547 users, barely installed. Audience over the last 30 days: -1.

No site access is declared in the manifest, so it cannot read the pages you open on its own.

What the developer says, and 1 screenshot

Loading from the Chrome Web Store. Open the listing if it does not appear.

Users
547
Rating
5.0 (3 ratings)
Users, last 30 days
-1
Rating, last 30 days
Steady over 30 days
Version
1.8
Updated in the store
2024-11-19
Published
2024-11-09
Manifest
V3
Browser access
1 permission

How it has moved

Users
-1 since 01.10
545-574 · 17 readings
  1. 2026-10-05560
  2. 2026-10-08573
  3. 2026-10-10572
  4. 2026-10-11567
  5. 2026-10-13571
  6. 2026-10-16574
  7. 2026-10-18573
  8. 2026-10-19568
  9. 2026-10-21567
  10. 2026-10-22566
  11. 2026-10-23565
  12. 2026-10-24558
  13. 2026-10-25555
  14. 2026-10-26552
  15. 2026-10-29545
  16. 2026-10-30547
  17. 2026-10-31547
Rating
unchanged since 01.10
reviewsrating 5.00 · 17 readings
  1. 2026-10-05reviews3rating5.00
  2. 2026-10-08reviews3rating5.00
  3. 2026-10-10reviews3rating5.00
  4. 2026-10-11reviews3rating5.00
  5. 2026-10-13reviews3rating5.00
  6. 2026-10-16reviews3rating5.00
  7. 2026-10-18reviews3rating5.00
  8. 2026-10-19reviews3rating5.00
  9. 2026-10-21reviews3rating5.00
  10. 2026-10-22reviews3rating5.00
  11. 2026-10-23reviews3rating5.00
  12. 2026-10-24reviews3rating5.00
  13. 2026-10-25reviews3rating5.00
  14. 2026-10-26reviews3rating5.00
  15. 2026-10-29reviews3rating5.00
  16. 2026-10-30reviews3rating5.00
  17. 2026-10-31reviews3rating5.00
Users
-19 since 01.09
528-574 · 33 readings
  1. 2026-09-01566
  2. 2026-09-03564
  3. 2026-09-04556
  4. 2026-09-05552
  5. 2026-09-06545
  6. 2026-09-08535
  7. 2026-09-09528
  8. 2026-09-10529
  9. 2026-09-13537
  10. 2026-09-15540
  11. 2026-09-17557
  12. 2026-09-20551
  13. 2026-09-21558
  14. 2026-09-25564
  15. 2026-09-27556
  16. 2026-09-28548
  17. 2026-10-05560
  18. 2026-10-08573
  19. 2026-10-10572
  20. 2026-10-11567
  21. 2026-10-13571
  22. 2026-10-16574
  23. 2026-10-18573
  24. 2026-10-19568
  25. 2026-10-21567
  26. 2026-10-22566
  27. 2026-10-23565
  28. 2026-10-24558
  29. 2026-10-25555
  30. 2026-10-26552
  31. 2026-10-29545
  32. 2026-10-30547
  33. 2026-10-31547
Rating
unchanged since 01.09
reviewsrating 5.00 · 33 readings
  1. 2026-09-01reviews3rating5.00
  2. 2026-09-03reviews3rating5.00
  3. 2026-09-04reviews3rating5.00
  4. 2026-09-05reviews3rating5.00
  5. 2026-09-06reviews3rating5.00
  6. 2026-09-08reviews3rating5.00
  7. 2026-09-09reviews3rating5.00
  8. 2026-09-10reviews3rating5.00
  9. 2026-09-13reviews3rating5.00
  10. 2026-09-15reviews3rating5.00
  11. 2026-09-17reviews3rating5.00
  12. 2026-09-20reviews3rating5.00
  13. 2026-09-21reviews3rating5.00
  14. 2026-09-25reviews3rating5.00
  15. 2026-09-27reviews3rating5.00
  16. 2026-09-28reviews3rating5.00
  17. 2026-10-05reviews3rating5.00
  18. 2026-10-08reviews3rating5.00
  19. 2026-10-10reviews3rating5.00
  20. 2026-10-11reviews3rating5.00
  21. 2026-10-13reviews3rating5.00
  22. 2026-10-16reviews3rating5.00
  23. 2026-10-18reviews3rating5.00
  24. 2026-10-19reviews3rating5.00
  25. 2026-10-21reviews3rating5.00
  26. 2026-10-22reviews3rating5.00
  27. 2026-10-23reviews3rating5.00
  28. 2026-10-24reviews3rating5.00
  29. 2026-10-25reviews3rating5.00
  30. 2026-10-26reviews3rating5.00
  31. 2026-10-29reviews3rating5.00
  32. 2026-10-30reviews3rating5.00
  33. 2026-10-31reviews3rating5.00

A dot marks a day the store showed a different number. Between them the line carries the last one forward: we read every listing up to 2 times a day and record a point only when something moves. History beyond ninety days is in the app.

What it can reach

No site access is declared in the manifest, so it cannot read the pages you open on its own.

  • Store data in your browser storage

The full permission history for this extension

What changed recently

Nothing has moved on this listing since we started watching it.

The publisher

drjo7178. Listed website: htmlvalidator.app.

Like this one

Listings the catalog judges closest in what they say they do.

  1. HTML Validator Describes nearly the same job, smaller audience 2k users ★ 3.6
  2. HTML Validator Describes nearly the same job, with an established audience 30k users ★ 3.5
  3. HTML Validator — On-Device Describes nearly the same job, smaller audience 22 users ★ 5.0
  4. Rocket Validator HTML Guides Describes nearly the same job, smaller audience 23 users ★ 5.0
  5. HTML & CSS W3C Validator Pro Describes nearly the same job, smaller audience 392 users ★ 4.4

The top 5 only. The full comparison, with why each one is close, is on the alternatives page; ranking a whole neighbourhood by your own criteria is in the app.

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The badge shows the audience and rating from our last pass over the store and links back to this page.

Users and rating on Ext Ops Panel

Markdown

[![Users and rating on Ext Ops Panel](https://extops.dev/extensions/aofddmgnidinflambjlfkpboeamdldbd/badge.svg)](https://extops.dev/extensions/aofddmgnidinflambjlfkpboeamdldbd)

HTML

<a href="https://extops.dev/extensions/aofddmgnidinflambjlfkpboeamdldbd"><img src="https://extops.dev/extensions/aofddmgnidinflambjlfkpboeamdldbd/badge.svg" alt="Users and rating on Ext Ops Panel" height="20"></a>

Figures come from our own regular passes over the public Chrome Web Store listing, last read on . The store last changed these figures on 2026-10-30. We publish no contact details for extension developers.

Where the data comes from: how the catalog is built