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Captain JSON - JSON Viewer & Formatter

Chrome extension by Pirates of Bugs · Productivity · Developer

A Chrome extension in Productivity · Developer with 118 users, barely installed. Audience over the last 30 days: +77.

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
118
Rating
5.0 (6 ratings)
Users, last 30 days
+77
Rating, last 30 days
Steady over 30 days
Version
1.9.4
Updated in the store
2026-10-27
Published
2026-08-21
Manifest
V3
Browser access
1 permission

How it has moved

Users
+77 since 03.10
41-123 · 16 readings
  1. 2026-10-0451
  2. 2026-10-0858
  3. 2026-10-0956
  4. 2026-10-1059
  5. 2026-10-1158
  6. 2026-10-1361
  7. 2026-10-1662
  8. 2026-10-1866
  9. 2026-10-1967
  10. 2026-10-2168
  11. 2026-10-2272
  12. 2026-10-2374
  13. 2026-10-2588
  14. 2026-10-27110
  15. 2026-10-29123
  16. 2026-11-01118
Rating
unchanged since 03.10
reviewsrating 5.00 · 16 readings
  1. 2026-10-04reviews4rating5.00
  2. 2026-10-08reviews4rating5.00
  3. 2026-10-09reviews4rating5.00
  4. 2026-10-10reviews4rating5.00
  5. 2026-10-11reviews4rating5.00
  6. 2026-10-13reviews5rating5.00
  7. 2026-10-16reviews6rating5.00
  8. 2026-10-18reviews6rating5.00
  9. 2026-10-19reviews6rating5.00
  10. 2026-10-21reviews6rating5.00
  11. 2026-10-22reviews6rating5.00
  12. 2026-10-23reviews6rating5.00
  13. 2026-10-25reviews6rating5.00
  14. 2026-10-27reviews6rating5.00
  15. 2026-10-29reviews6rating5.00
  16. 2026-11-01reviews6rating5.00
Users
+102 since 31.08
16-123 · 28 readings
2026-09-18: released 1.9.32026-10-01: released 1.9.4
  1. 2026-08-3116
  2. 2026-09-0417
  3. 2026-09-0517
  4. 2026-09-0720
  5. 2026-09-0822
  6. 2026-09-0924
  7. 2026-09-1723
  8. 2026-09-2028
  9. 2026-09-2134
  10. 2026-09-2538
  11. 2026-09-2639
  12. 2026-09-2841
  13. 2026-10-0451
  14. 2026-10-0858
  15. 2026-10-0956
  16. 2026-10-1059
  17. 2026-10-1158
  18. 2026-10-1361
  19. 2026-10-1662
  20. 2026-10-1866
  21. 2026-10-1967
  22. 2026-10-2168
  23. 2026-10-2272
  24. 2026-10-2374
  25. 2026-10-2588
  26. 2026-10-27110
  27. 2026-10-29123
  28. 2026-11-01118
Rating
unchanged since 31.08
reviewsrating 5.00 · 28 readings
2026-09-18: released 1.9.32026-10-01: released 1.9.4
  1. 2026-08-31reviews1rating5.00
  2. 2026-09-04reviews1rating5.00
  3. 2026-09-05reviews2rating5.00
  4. 2026-09-07reviews2rating5.00
  5. 2026-09-08reviews2rating5.00
  6. 2026-09-09reviews3rating5.00
  7. 2026-09-17reviews3rating5.00
  8. 2026-09-20reviews3rating5.00
  9. 2026-09-21reviews3rating5.00
  10. 2026-09-25reviews4rating5.00
  11. 2026-09-26reviews4rating5.00
  12. 2026-09-28reviews4rating5.00
  13. 2026-10-04reviews4rating5.00
  14. 2026-10-08reviews4rating5.00
  15. 2026-10-09reviews4rating5.00
  16. 2026-10-10reviews4rating5.00
  17. 2026-10-11reviews4rating5.00
  18. 2026-10-13reviews5rating5.00
  19. 2026-10-16reviews6rating5.00
  20. 2026-10-18reviews6rating5.00
  21. 2026-10-19reviews6rating5.00
  22. 2026-10-21reviews6rating5.00
  23. 2026-10-22reviews6rating5.00
  24. 2026-10-23reviews6rating5.00
  25. 2026-10-25reviews6rating5.00
  26. 2026-10-27reviews6rating5.00
  27. 2026-10-29reviews6rating5.00
  28. 2026-11-01reviews6rating5.00

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.

The full permission history for this extension

Version history

  1. Version 1.9.4
  2. Version 1.9.3 · Asked for more permissions (1, was 0)

What changed recently

  1. Package size changed
  2. Store description rewritten (120 → 124 characters)
  3. Renamed from "Captain JSON" to "Captain JSON - JSON Viewer & Formatter"
Show the remaining 5
  1. Released version 1.9.4 (was 1.9.3)
  2. Now requires Chrome 116
  3. Package size changed
  4. Asked for more permissions (1, was 0)
  5. Released version 1.9.3 (was 1.6.3)

The publisher

Pirates of Bugs publishes 3 listings we track, 292 users between them.

  1. Captain Octopus – Bug Reporter & Screen Recorder Pirates of Bugs · Productivity · Developer · published 2026-08-23 90 users
  2. Captain Spyglass — Alignment Inspector Pirates of Bugs · Productivity · Developer · published 2026-08-18 84 users ★ 5.0

Like this one

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

  1. JSON Toolkit Describes nearly the same job, smaller audience 13 users ★ 5.0
  2. JSON Formatter Pro - Validate, Query & Diff Describes nearly the same job, smaller audience 12 users
  3. JSON Formatter & Viewer - Editor, Query & Diff Describes nearly the same job, smaller audience 121 users ★ 5.0
  4. JSONKit — JSON Formatter & Validator Describes nearly the same job, smaller audience 6 users (last published figure)
  5. JSON Tree — Viewer & Export Describes nearly the same job, smaller audience 6 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