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Chrome extension by Liberogic Inc. · Productivity · Developer

  • Established publisher
  • Trader

A Chrome extension in Productivity · Developer with 144 users, barely installed. Audience over the last 30 days: +12.

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

What the developer says, and 5 screenshots

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

Users
144
Rating
4.7 (3 ratings)
Users, last 30 days
+12
Rating, last 30 days
Steady over 30 days
Version
1.5.2
Updated in the store
2026-10-16
Published
2026-04-22
Manifest
V3
Browser access
3 permissions

How it has moved

Users
+12 since 03.10
127-513 · 17 readings
2026-10-16: released 1.5.2
  1. 2026-10-04138
  2. 2026-10-08142
  3. 2026-10-09139
  4. 2026-10-10137
  5. 2026-10-11136
  6. 2026-10-13129
  7. 2026-10-16127released 1.5.2
  8. 2026-10-18144
  9. 2026-10-19276
  10. 2026-10-21354
  11. 2026-10-22422
  12. 2026-10-23489
  13. 2026-10-24513
  14. 2026-10-28298
  15. 2026-10-29170
  16. 2026-11-01144
  17. 2026-11-02144
Rating
unchanged since 03.10
reviewsrating 4.67 · 17 readings
2026-10-16: released 1.5.2
  1. 2026-10-04reviews3rating4.67
  2. 2026-10-08reviews3rating4.67
  3. 2026-10-09reviews3rating4.67
  4. 2026-10-10reviews3rating4.67
  5. 2026-10-11reviews3rating4.67
  6. 2026-10-13reviews3rating4.67
  7. 2026-10-16reviews3rating4.67released 1.5.2
  8. 2026-10-18reviews3rating4.67
  9. 2026-10-19reviews3rating4.67
  10. 2026-10-21reviews3rating4.67
  11. 2026-10-22reviews3rating4.67
  12. 2026-10-23reviews3rating4.67
  13. 2026-10-24reviews3rating4.67
  14. 2026-10-28reviews3rating4.67
  15. 2026-10-29reviews3rating4.67
  16. 2026-11-01reviews3rating4.67
  17. 2026-11-02reviews3rating4.67
Users
+18 since 01.09
123-513 · 30 readings
2026-09-29: released 1.5.12026-10-16: released 1.5.2
  1. 2026-09-01126
  2. 2026-09-03125
  3. 2026-09-07123
  4. 2026-09-09125
  5. 2026-09-10123
  6. 2026-09-13134
  7. 2026-09-15136
  8. 2026-09-17139
  9. 2026-09-20136
  10. 2026-09-21137
  11. 2026-09-25138
  12. 2026-09-26136
  13. 2026-09-28132
  14. 2026-10-04138
  15. 2026-10-08142
  16. 2026-10-09139
  17. 2026-10-10137
  18. 2026-10-11136
  19. 2026-10-13129
  20. 2026-10-16127released 1.5.2
  21. 2026-10-18144
  22. 2026-10-19276
  23. 2026-10-21354
  24. 2026-10-22422
  25. 2026-10-23489
  26. 2026-10-24513
  27. 2026-10-28298
  28. 2026-10-29170
  29. 2026-11-01144
  30. 2026-11-02144
Rating
unchanged since 01.09
reviewsrating 4.67 · 30 readings
2026-09-29: released 1.5.12026-10-16: released 1.5.2
  1. 2026-09-01reviews3rating4.67
  2. 2026-09-03reviews3rating4.67
  3. 2026-09-07reviews3rating4.67
  4. 2026-09-09reviews3rating4.67
  5. 2026-09-10reviews3rating4.67
  6. 2026-09-13reviews3rating4.67
  7. 2026-09-15reviews3rating4.67
  8. 2026-09-17reviews3rating4.67
  9. 2026-09-20reviews3rating4.67
  10. 2026-09-21reviews3rating4.67
  11. 2026-09-25reviews3rating4.67
  12. 2026-09-26reviews3rating4.67
  13. 2026-09-28reviews3rating4.67
  14. 2026-10-04reviews3rating4.67
  15. 2026-10-08reviews3rating4.67
  16. 2026-10-09reviews3rating4.67
  17. 2026-10-10reviews3rating4.67
  18. 2026-10-11reviews3rating4.67
  19. 2026-10-13reviews3rating4.67
  20. 2026-10-16reviews3rating4.67released 1.5.2
  21. 2026-10-18reviews3rating4.67
  22. 2026-10-19reviews3rating4.67
  23. 2026-10-21reviews3rating4.67
  24. 2026-10-22reviews3rating4.67
  25. 2026-10-23reviews3rating4.67
  26. 2026-10-24reviews3rating4.67
  27. 2026-10-28reviews3rating4.67
  28. 2026-10-29reviews3rating4.67
  29. 2026-11-01reviews3rating4.67
  30. 2026-11-02reviews3rating4.67

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.

  • Run its own code on the pages it can access scripting
  • Act on the current tab, but only after you click it activeTab
  • Store data in your browser storage

The full permission history for this extension

Version history

  1. Version 1.5.2
  2. Version 1.5.1

What changed recently

  1. Package size changed
  2. Released version 1.5.2 (was 1.5.1)
  3. Package size changed
Show the remaining 1
  1. Released version 1.5.1 (was 1.5.0)

The publisher

Liberogic Inc. publishes 4 listings we track, 284 users between them. Listed website: liberogic.jp.

  1. A11y Navigation Auditor - WCAG Web Accessibility Structure Audit & AI Liberogic Inc. · Productivity · Developer · published 2026-04-23 86 users
  2. やさしい日本語 ＆ 読みやすさ診断 〜情報のバリアをなくすアクセシビリティ支援〜 Liberogic Inc. · Productivity · Tools · published 2026-06-07 41 users
  3. Area Flash Checker - WCAG Flash & Seizure Safety Testing (2.3.1 / 2.3.2) Liberogic Inc. · Productivity · Developer · published 2026-10-21 13 users

Like this one

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

  1. Contrast Checker Describes nearly the same job, smaller audience 182 users ★ 4.7
  2. Color Contrast Checker by Accessibility Tracker Describes nearly the same job, smaller audience 471 users ★ 4.2
  3. ColorContrast — WCAG & APCA Contrast Checker Describes nearly the same job, smaller audience 43 users
  4. AVC + WCAG Contrast Checker Describes nearly the same job, smaller audience 15 users
  5. Color Contrast Checker - WCAG Accessibility Ratio Tool Describes nearly the same job, smaller audience 84 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

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HTML

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Figures come from our own regular passes over the public Chrome Web Store listing, last read on . The store last changed these figures on 2026-11-01. We publish no contact details for extension developers.

Where the data comes from: how the catalog is built