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HTML validator

Chrome extension by drjo7178 · Productivity · Developer

A Chrome extension in Productivity · Developer with 540 users, barely installed.

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
540
Rating
5.0 (3 ratings)
Users, last 15 days
-26
Rating, last 30 days
Not watched long enough to say
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
-26 since 01.09
528-566 · 10 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
Rating
unchanged since 01.09
reviewsrating 5.00 · 10 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
Users
-26 since 01.09
528-566 · 10 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
Rating
unchanged since 01.09
reviewsrating 5.00 · 10 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

A dot marks a day the store showed a different number. Between them the line carries the last one forward: we read every listing more than once 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 11 users ★ 5.0
  4. Rocket Validator HTML Guides Describes nearly the same job, smaller audience 19 users ★ 5.0
  5. HTML & CSS W3C Validator Pro Describes nearly the same job, smaller audience 162 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.

Is this your extension?

Connect it to Ext Ops Panel and see installs, uninstalls and uninstall reasons as events arrive, not as a weekly summary.

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Figures come from our own daily pass over the public Chrome Web Store listing, last read on . We publish no contact details for extension developers.