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Katai

Chrome extension by CORNU LAB · Productivity · Tools

  • Trader

A Chrome extension in Productivity · Tools with 27 users, barely installed. Audience over the last 30 days: +4.

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
27
Rating
5.0 (1 ratings)
Users, last 30 days
+4
Rating, last 30 days
+5.00 in 30 days
Version
1.0.2
Updated in the store
2026-10-16
Published
2024-05-21
Manifest
V3
Browser access
3 permissions

How it has moved

Users
+4 since 03.10
22-28 · 18 readings
2026-10-15: removed from the store2026-10-17: back in the store
  1. 2026-10-0424
  2. 2026-10-0823
  3. 2026-10-0924
  4. 2026-10-1023
  5. 2026-10-1122
  6. 2026-10-1323
  7. 2026-10-1722back in the store
  8. 2026-10-1823
  9. 2026-10-1925
  10. 2026-10-2126
  11. 2026-10-2225
  12. 2026-10-2326
  13. 2026-10-2427
  14. 2026-10-2528
  15. 2026-10-2825
  16. 2026-10-2926
  17. 2026-11-0127
  18. 2026-11-0227
Rating
+5.00 since 03.10
reviewsrating 0.00-5.00 · 18 readings
2026-10-15: removed from the store2026-10-17: back in the store
  1. 2026-10-04reviews0rating0.00
  2. 2026-10-08reviews0rating0.00
  3. 2026-10-09reviews1rating5.00
  4. 2026-10-10reviews1rating5.00
  5. 2026-10-11reviews1rating5.00
  6. 2026-10-13reviews1rating5.00
  7. 2026-10-17reviews1rating5.00back in the store
  8. 2026-10-18reviews1rating5.00
  9. 2026-10-19reviews1rating5.00
  10. 2026-10-21reviews1rating5.00
  11. 2026-10-22reviews1rating5.00
  12. 2026-10-23reviews1rating5.00
  13. 2026-10-24reviews1rating5.00
  14. 2026-10-25reviews1rating5.00
  15. 2026-10-28reviews1rating5.00
  16. 2026-10-29reviews1rating5.00
  17. 2026-11-01reviews1rating5.00
  18. 2026-11-02reviews1rating5.00
Users
+3 since 01.09
21-28 · 29 readings
2026-10-15: removed from the store2026-10-17: back in the store
  1. 2026-09-0124
  2. 2026-09-0422
  3. 2026-09-0622
  4. 2026-09-0921
  5. 2026-09-1323
  6. 2026-09-1525
  7. 2026-09-1624
  8. 2026-09-2125
  9. 2026-09-2223
  10. 2026-09-2524
  11. 2026-09-2823
  12. 2026-10-0424
  13. 2026-10-0823
  14. 2026-10-0924
  15. 2026-10-1023
  16. 2026-10-1122
  17. 2026-10-1323
  18. 2026-10-1722back in the store
  19. 2026-10-1823
  20. 2026-10-1925
  21. 2026-10-2126
  22. 2026-10-2225
  23. 2026-10-2326
  24. 2026-10-2427
  25. 2026-10-2528
  26. 2026-10-2825
  27. 2026-10-2926
  28. 2026-11-0127
  29. 2026-11-0227
Rating
+5.00 since 01.09
reviewsrating 0.00-5.00 · 29 readings
2026-10-15: removed from the store2026-10-17: back in the store
  1. 2026-09-01reviews0rating0.00
  2. 2026-09-04reviews0rating0.00
  3. 2026-09-06reviews0rating0.00
  4. 2026-09-09reviews0rating0.00
  5. 2026-09-13reviews0rating0.00
  6. 2026-09-15reviews0rating0.00
  7. 2026-09-16reviews0rating0.00
  8. 2026-09-21reviews0rating0.00
  9. 2026-09-22reviews0rating0.00
  10. 2026-09-25reviews0rating0.00
  11. 2026-09-28reviews0rating0.00
  12. 2026-10-04reviews0rating0.00
  13. 2026-10-08reviews0rating0.00
  14. 2026-10-09reviews1rating5.00
  15. 2026-10-10reviews1rating5.00
  16. 2026-10-11reviews1rating5.00
  17. 2026-10-13reviews1rating5.00
  18. 2026-10-17reviews1rating5.00back in the store
  19. 2026-10-18reviews1rating5.00
  20. 2026-10-19reviews1rating5.00
  21. 2026-10-21reviews1rating5.00
  22. 2026-10-22reviews1rating5.00
  23. 2026-10-23reviews1rating5.00
  24. 2026-10-24reviews1rating5.00
  25. 2026-10-25reviews1rating5.00
  26. 2026-10-28reviews1rating5.00
  27. 2026-10-29reviews1rating5.00
  28. 2026-11-01reviews1rating5.00
  29. 2026-11-02reviews1rating5.00

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.

  • Run its own code on the pages it can access scripting
  • Act on the current tab, but only after you click it activeTab
  • Add items to the right-click menu contextMenus

The full permission history for this extension

What changed recently

  1. Back in the store
  2. Removed from the store
  3. Store badges changed

The publisher

CORNU LAB publishes 2 listings we track, 34 users between them.

  1. Taiyaku — AI Translator CORNU LAB · Productivity · Tools · published 2026-10-15 7 users ★ 5.0

Like this one

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

  1. ZENKAKU HANKAKU Converter Describes nearly the same job, smaller audience 53 users ★ 5.0
  2. MojiHenkan 文字変換 Describes nearly the same job, smaller audience 19 users
  3. Japanese Name Converter Describes nearly the same job, smaller audience 17 users ★ 5.0
  4. Romaji Reader Describes nearly the same job, smaller audience 169 users
  5. KTerminator Describes nearly the same job, smaller audience 145 users

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