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Online Ruler

Chrome extension by columbia7755 · Productivity · Tools

A Chrome extension in Productivity · Tools with 366 users, barely installed. Audience over the last 30 days: +23.

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
366
Rating
not rated yet
Users, last 30 days
+23
Version
1.0.5
Updated in the store
2026-03-10
Published
2026-02-08
Manifest
V3
Browser access
2 permissions

How it has moved

Users
+23 since 11.10
340-368 · 20 readings
  1. 2026-10-13340
  2. 2026-10-16353
  3. 2026-10-18352
  4. 2026-10-19355
  5. 2026-10-20356
  6. 2026-10-21359
  7. 2026-10-22361
  8. 2026-10-23363
  9. 2026-10-24364
  10. 2026-10-26365
  11. 2026-10-28368
  12. 2026-10-29362
  13. 2026-10-30366
  14. 2026-11-01362
  15. 2026-11-02356
  16. 2026-11-04359
  17. 2026-11-06366
  18. 2026-11-07367
  19. 2026-11-09364
  20. 2026-11-10366
Users
+35 since 31.08
330-368 · 38 readings
  1. 2026-08-31331
  2. 2026-09-02330
  3. 2026-09-06332
  4. 2026-09-07330
  5. 2026-09-08334
  6. 2026-09-09330
  7. 2026-09-10333
  8. 2026-09-15335
  9. 2026-09-17348
  10. 2026-09-20344
  11. 2026-09-21342
  12. 2026-09-25335
  13. 2026-09-26336
  14. 2026-09-28338
  15. 2026-10-04347
  16. 2026-10-08345
  17. 2026-10-09343
  18. 2026-10-10343
  19. 2026-10-13340
  20. 2026-10-16353
  21. 2026-10-18352
  22. 2026-10-19355
  23. 2026-10-20356
  24. 2026-10-21359
  25. 2026-10-22361
  26. 2026-10-23363
  27. 2026-10-24364
  28. 2026-10-26365
  29. 2026-10-28368
  30. 2026-10-29362
  31. 2026-10-30366
  32. 2026-11-01362
  33. 2026-11-02356
  34. 2026-11-04359
  35. 2026-11-06366
  36. 2026-11-07367
  37. 2026-11-09364
  38. 2026-11-10366

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.

  • 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

What changed recently

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

The publisher

columbia7755.

Like this one

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

  1. MM Ruler Describes nearly the same job, smaller audience 49 users ★ 4.3
  2. Free Online Ruler Describes nearly the same job, smaller audience 1k users ★ 1.0
  3. Physics Ruler Describes nearly the same job, smaller audience 15 users ★ 2.0
  4. MeasureIt Pro Describes nearly the same job, smaller audience 12 users
  5. Full Measurements Ruler Describes nearly the same job, smaller audience 9 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 2026-11-10. We publish no contact details for extension developers.

Where the data comes from: how the catalog is built