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Chrome extension by Barrelhead · Productivity · Tools

A Chrome extension in Productivity · Tools with 272 users, barely installed. Audience over the last 30 days: +16.

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

What the developer says, and 2 screenshots

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

Users
272
Rating
5.0 (1 ratings)
Users, last 30 days
+16
Rating, last 30 days
Steady over 30 days
Version
1.8.0
Updated in the store
2026-10-08
Published
2025-06-21
Manifest
V3
Browser access
7 permissions

How it has moved

Users
+16 since 04.10
256-280 · 17 readings
2026-10-08: released 1.8.0
  1. 2026-10-04256
  2. 2026-10-08260released 1.8.0
  3. 2026-10-09261
  4. 2026-10-10266
  5. 2026-10-16271
  6. 2026-10-17268
  7. 2026-10-19267
  8. 2026-10-20268
  9. 2026-10-21272
  10. 2026-10-23271
  11. 2026-10-24276
  12. 2026-10-25275
  13. 2026-10-28280
  14. 2026-10-29279
  15. 2026-10-30280
  16. 2026-11-01272
  17. 2026-11-03272
Rating
unchanged since 04.10
reviewsrating 5.00 · 17 readings
2026-10-08: released 1.8.0
  1. 2026-10-04reviews1rating5.00
  2. 2026-10-08reviews1rating5.00released 1.8.0
  3. 2026-10-09reviews1rating5.00
  4. 2026-10-10reviews1rating5.00
  5. 2026-10-16reviews1rating5.00
  6. 2026-10-17reviews1rating5.00
  7. 2026-10-19reviews1rating5.00
  8. 2026-10-20reviews1rating5.00
  9. 2026-10-21reviews1rating5.00
  10. 2026-10-23reviews1rating5.00
  11. 2026-10-24reviews1rating5.00
  12. 2026-10-25reviews1rating5.00
  13. 2026-10-28reviews1rating5.00
  14. 2026-10-29reviews1rating5.00
  15. 2026-10-30reviews1rating5.00
  16. 2026-11-01reviews1rating5.00
  17. 2026-11-03reviews1rating5.00
Users
+31 since 31.08
237-280 · 30 readings
2026-10-08: released 1.8.0
  1. 2026-08-31241
  2. 2026-09-04240
  3. 2026-09-05241
  4. 2026-09-06239
  5. 2026-09-07240
  6. 2026-09-10243
  7. 2026-09-13238
  8. 2026-09-15237
  9. 2026-09-16250
  10. 2026-09-20246
  11. 2026-09-25250
  12. 2026-09-26249
  13. 2026-09-28248
  14. 2026-10-04256
  15. 2026-10-08260released 1.8.0
  16. 2026-10-09261
  17. 2026-10-10266
  18. 2026-10-16271
  19. 2026-10-17268
  20. 2026-10-19267
  21. 2026-10-20268
  22. 2026-10-21272
  23. 2026-10-23271
  24. 2026-10-24276
  25. 2026-10-25275
  26. 2026-10-28280
  27. 2026-10-29279
  28. 2026-10-30280
  29. 2026-11-01272
  30. 2026-11-03272
Rating
unchanged since 31.08
reviewsrating 5.00 · 30 readings
2026-10-08: released 1.8.0
  1. 2026-08-31reviews1rating5.00
  2. 2026-09-04reviews1rating5.00
  3. 2026-09-05reviews1rating5.00
  4. 2026-09-06reviews1rating5.00
  5. 2026-09-07reviews1rating5.00
  6. 2026-09-10reviews1rating5.00
  7. 2026-09-13reviews1rating5.00
  8. 2026-09-15reviews1rating5.00
  9. 2026-09-16reviews1rating5.00
  10. 2026-09-20reviews1rating5.00
  11. 2026-09-25reviews1rating5.00
  12. 2026-09-26reviews1rating5.00
  13. 2026-09-28reviews1rating5.00
  14. 2026-10-04reviews1rating5.00
  15. 2026-10-08reviews1rating5.00released 1.8.0
  16. 2026-10-09reviews1rating5.00
  17. 2026-10-10reviews1rating5.00
  18. 2026-10-16reviews1rating5.00
  19. 2026-10-17reviews1rating5.00
  20. 2026-10-19reviews1rating5.00
  21. 2026-10-20reviews1rating5.00
  22. 2026-10-21reviews1rating5.00
  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. 2026-10-30reviews1rating5.00
  29. 2026-11-01reviews1rating5.00
  30. 2026-11-03reviews1rating5.00

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.

  • Clear your browsing data browsingData
  • Read and change cookies on the sites it can access cookies
  • Attach to pages the way developer tools do debugger
Show the remaining 4
  • See the address and title of every tab you have open tabs
  • Manage your downloads downloads
  • 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 1.8.0

What changed recently

  1. Package size changed
  2. Store description rewritten (108 → 128 characters)
  3. Released version 1.8.0 (was 1.7.3)

The publisher

Barrelhead publishes 2 listings we track, 275 users between them.

  1. HAR Spyglass Barrelhead · Productivity · Developer · published 2026-05-14 3 users

Like this one

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

  1. BrowserLens AI — Compatibility & Policy Diagnostics Describes nearly the same job, smaller audience 7 users ★ 5.0
  2. caniuse Describes nearly the same job, smaller audience 3 users
  3. Old Chrome Simulator Describes nearly the same job, smaller audience 179 users ★ 5.0
  4. Chrome Inspector Sync Describes nearly the same job, smaller audience 4 users
  5. Caniuse Finder Describes nearly the same job, smaller audience 19 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