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Rocket Validator HTML Guides

Chrome extension by lighthouses · Productivity · Developer

  • Established publisher

A Chrome extension in Productivity · Developer with 21 users, barely installed. Audience over the last 30 days: +2.

Specific sites only: 1 match pattern.

What the developer says, and 2 screenshots

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

Users
21
Rating
5.0 (4 ratings)
Users, last 30 days
+2
Rating, last 30 days
Steady over 30 days
Version
0.2.1
Updated in the store
2026-05-26
Published
2026-05-19
Manifest
V3
Browser access
1 permission, 1 site pattern

How it has moved

Users
+2 since 05.10
18-25 · 16 readings
  1. 2026-10-0519
  2. 2026-10-0818
  3. 2026-10-0919
  4. 2026-10-1019
  5. 2026-10-1321
  6. 2026-10-1823
  7. 2026-10-1921
  8. 2026-10-2020
  9. 2026-10-2121
  10. 2026-10-2220
  11. 2026-10-2322
  12. 2026-10-2425
  13. 2026-10-2523
  14. 2026-11-0120
  15. 2026-11-0222
  16. 2026-11-0421
Rating
unchanged since 05.10
reviewsrating 5.00 · 16 readings
  1. 2026-10-05reviews4rating5.00
  2. 2026-10-08reviews4rating5.00
  3. 2026-10-09reviews4rating5.00
  4. 2026-10-10reviews4rating5.00
  5. 2026-10-13reviews4rating5.00
  6. 2026-10-18reviews4rating5.00
  7. 2026-10-19reviews4rating5.00
  8. 2026-10-20reviews4rating5.00
  9. 2026-10-21reviews4rating5.00
  10. 2026-10-22reviews4rating5.00
  11. 2026-10-23reviews4rating5.00
  12. 2026-10-24reviews4rating5.00
  13. 2026-10-25reviews4rating5.00
  14. 2026-11-01reviews4rating5.00
  15. 2026-11-02reviews4rating5.00
  16. 2026-11-04reviews4rating5.00
Users
unchanged since 01.09
18-25 · 30 readings
  1. 2026-09-0121
  2. 2026-09-0222
  3. 2026-09-0420
  4. 2026-09-0619
  5. 2026-09-0718
  6. 2026-09-0920
  7. 2026-09-1019
  8. 2026-09-1318
  9. 2026-09-1519
  10. 2026-09-1718
  11. 2026-09-2118
  12. 2026-09-2520
  13. 2026-09-2622
  14. 2026-09-2821
  15. 2026-10-0519
  16. 2026-10-0818
  17. 2026-10-0919
  18. 2026-10-1019
  19. 2026-10-1321
  20. 2026-10-1823
  21. 2026-10-1921
  22. 2026-10-2020
  23. 2026-10-2121
  24. 2026-10-2220
  25. 2026-10-2322
  26. 2026-10-2425
  27. 2026-10-2523
  28. 2026-11-0120
  29. 2026-11-0222
  30. 2026-11-0421
Rating
unchanged since 01.09
reviewsrating 5.00 · 30 readings
  1. 2026-09-01reviews4rating5.00
  2. 2026-09-02reviews4rating5.00
  3. 2026-09-04reviews4rating5.00
  4. 2026-09-06reviews4rating5.00
  5. 2026-09-07reviews4rating5.00
  6. 2026-09-09reviews4rating5.00
  7. 2026-09-10reviews4rating5.00
  8. 2026-09-13reviews4rating5.00
  9. 2026-09-15reviews4rating5.00
  10. 2026-09-17reviews4rating5.00
  11. 2026-09-21reviews4rating5.00
  12. 2026-09-25reviews4rating5.00
  13. 2026-09-26reviews4rating5.00
  14. 2026-09-28reviews4rating5.00
  15. 2026-10-05reviews4rating5.00
  16. 2026-10-08reviews4rating5.00
  17. 2026-10-09reviews4rating5.00
  18. 2026-10-10reviews4rating5.00
  19. 2026-10-13reviews4rating5.00
  20. 2026-10-18reviews4rating5.00
  21. 2026-10-19reviews4rating5.00
  22. 2026-10-20reviews4rating5.00
  23. 2026-10-21reviews4rating5.00
  24. 2026-10-22reviews4rating5.00
  25. 2026-10-23reviews4rating5.00
  26. 2026-10-24reviews4rating5.00
  27. 2026-10-25reviews4rating5.00
  28. 2026-11-01reviews4rating5.00
  29. 2026-11-02reviews4rating5.00
  30. 2026-11-04reviews4rating5.00

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

Specific sites only: 1 match pattern.

  • https://rocketvalidator.com/*
  • 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

lighthouses publishes 4 listings we track, 204 users between them. Listed website: rocketvalidator.com.

  1. Cans - Audio Booster, Panner & Equalizer lighthouses · Make Chrome Yours · Accessibility · published 2026-05-28 143 users ★ 5.0
  2. Rocket Validator A11y Panel lighthouses · Make Chrome Yours · Accessibility · published 2026-08-21 21 users ★ 5.0
  3. Rocket Validator Highlighter lighthouses · Make Chrome Yours · Accessibility · published 2026-05-22 19 users

Like this one

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

  1. HTML validator Describes nearly the same job, smaller audience 550 users ★ 5.0
  2. HTML Validator — On-Device Describes nearly the same job, smaller audience 20 users ★ 5.0
  3. HTML Validator Describes nearly the same job, with an established audience 30k users ★ 3.5
  4. HTML Validator Describes nearly the same job, smaller audience 2k users ★ 3.6
  5. Validify Describes nearly the same job, smaller audience 99 users ★ 5.0

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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Users and rating on Ext Ops Panel

Markdown

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

HTML

<a href="https://extops.dev/extensions/bgnfcmlljcbebgejmmdgdncbgndogcpa"><img src="https://extops.dev/extensions/bgnfcmlljcbebgejmmdgdncbgndogcpa/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 2026-11-04. We publish no contact details for extension developers.

Where the data comes from: how the catalog is built