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Sinemarka Bookmark Toolkit

Chrome extension by Sinemarka · Productivity · Tools

  • Trader

A Chrome extension in Productivity · Tools with 8 users, barely installed. Audience over the last 30 days: unchanged.

Every site you visit. This extension can read and change the content of any page you open.

What the developer says, and 5 screenshots

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

Users
8
Rating
5.0 (1 ratings)
Users, last 30 days
Unchanged
Rating, last 30 days
Steady over 30 days
Version
1.0.1
Updated in the store
2026-07-15
Published
2026-07-15
Manifest
V3
Browser access
6 permissions, 1 site pattern

How it has moved

Users
unchanged since 16.10
8-11 · 17 readings
  1. 2026-10-189
  2. 2026-10-198
  3. 2026-10-2110
  4. 2026-10-229
  5. 2026-10-2310
  6. 2026-10-2411
  7. 2026-10-2510
  8. 2026-10-289
  9. 2026-10-298
  10. 2026-10-309
  11. 2026-11-018
  12. 2026-11-0210
  13. 2026-11-049
  14. 2026-11-0810
  15. 2026-11-099
  16. 2026-11-118
  17. 2026-11-158
Rating
unchanged since 16.10
reviewsrating 5.00 · 17 readings
  1. 2026-10-18reviews1rating5.00
  2. 2026-10-19reviews1rating5.00
  3. 2026-10-21reviews1rating5.00
  4. 2026-10-22reviews1rating5.00
  5. 2026-10-23reviews1rating5.00
  6. 2026-10-24reviews1rating5.00
  7. 2026-10-25reviews1rating5.00
  8. 2026-10-28reviews1rating5.00
  9. 2026-10-29reviews1rating5.00
  10. 2026-10-30reviews1rating5.00
  11. 2026-11-01reviews1rating5.00
  12. 2026-11-02reviews1rating5.00
  13. 2026-11-04reviews1rating5.00
  14. 2026-11-08reviews1rating5.00
  15. 2026-11-09reviews1rating5.00
  16. 2026-11-11reviews1rating5.00
  17. 2026-11-15reviews1rating5.00
Users
+1 since 01.09
6-11 · 34 readings
  1. 2026-09-017
  2. 2026-09-028
  3. 2026-09-056
  4. 2026-09-067
  5. 2026-09-088
  6. 2026-09-107
  7. 2026-09-138
  8. 2026-09-159
  9. 2026-09-178
  10. 2026-09-218
  11. 2026-09-257
  12. 2026-09-269
  13. 2026-09-288
  14. 2026-10-059
  15. 2026-10-088
  16. 2026-10-099
  17. 2026-10-108
  18. 2026-10-189
  19. 2026-10-198
  20. 2026-10-2110
  21. 2026-10-229
  22. 2026-10-2310
  23. 2026-10-2411
  24. 2026-10-2510
  25. 2026-10-289
  26. 2026-10-298
  27. 2026-10-309
  28. 2026-11-018
  29. 2026-11-0210
  30. 2026-11-049
  31. 2026-11-0810
  32. 2026-11-099
  33. 2026-11-118
  34. 2026-11-158
Rating
unchanged since 01.09
reviewsrating 5.00 · 34 readings
  1. 2026-09-01reviews1rating5.00
  2. 2026-09-02reviews1rating5.00
  3. 2026-09-05reviews1rating5.00
  4. 2026-09-06reviews1rating5.00
  5. 2026-09-08reviews1rating5.00
  6. 2026-09-10reviews1rating5.00
  7. 2026-09-13reviews1rating5.00
  8. 2026-09-15reviews1rating5.00
  9. 2026-09-17reviews1rating5.00
  10. 2026-09-21reviews1rating5.00
  11. 2026-09-25reviews1rating5.00
  12. 2026-09-26reviews1rating5.00
  13. 2026-09-28reviews1rating5.00
  14. 2026-10-05reviews1rating5.00
  15. 2026-10-08reviews1rating5.00
  16. 2026-10-09reviews1rating5.00
  17. 2026-10-10reviews1rating5.00
  18. 2026-10-18reviews1rating5.00
  19. 2026-10-19reviews1rating5.00
  20. 2026-10-21reviews1rating5.00
  21. 2026-10-22reviews1rating5.00
  22. 2026-10-23reviews1rating5.00
  23. 2026-10-24reviews1rating5.00
  24. 2026-10-25reviews1rating5.00
  25. 2026-10-28reviews1rating5.00
  26. 2026-10-29reviews1rating5.00
  27. 2026-10-30reviews1rating5.00
  28. 2026-11-01reviews1rating5.00
  29. 2026-11-02reviews1rating5.00
  30. 2026-11-04reviews1rating5.00
  31. 2026-11-08reviews1rating5.00
  32. 2026-11-09reviews1rating5.00
  33. 2026-11-11reviews1rating5.00
  34. 2026-11-15reviews1rating5.00

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

Every site you visit. This extension can read and change the content of any page you open.

  • See the address and title of every tab you have open tabs
  • Read and change your bookmarks bookmarks
  • Schedule work to run later alarms
Show the remaining 3

The full permission history for this extension

What changed recently

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

The publisher

Sinemarka.

Like this one

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

  1. Q Bookmark Cleaner Describes nearly the same job, smaller audience 223 users ★ 5.0
  2. Bookmark Hygiene Describes nearly the same job, smaller audience 7 users
  3. Bookmarks Checker - Duplicate and Dead Links Describes nearly the same job, smaller audience 1k users ★ 4.2
  4. Bookmark Manager Describes nearly the same job, smaller audience 2 users (last published figure)
  5. Bookmark Cleaner - Dead Link Finder Describes nearly the same job, smaller audience 52 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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Figures come from our own regular passes over the public Chrome Web Store listing, last read on . The store last changed these figures on 2026-11-11. We publish no contact details for extension developers.

Where the data comes from: how the catalog is built