Ext Ops Panel
Open the app

JSON Formatter

Chrome extension by seiri-dev · Productivity · Tools

A Chrome extension in Productivity · Tools with 103 users, barely installed.

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
103
Rating
not rated yet
Users, last 16 days
-4
Version
1.0.1
Updated in the store
2026-02-19
Published
2024-05-20
Manifest
V3
Browser access
No permissions declared

How it has moved

Users
-4 since 01.09
96-117 · 11 readings
  1. 2026-09-01107
  2. 2026-09-03110
  3. 2026-09-04117
  4. 2026-09-06113
  5. 2026-09-07110
  6. 2026-09-08106
  7. 2026-09-09111
  8. 2026-09-10112
  9. 2026-09-1396
  10. 2026-09-15103
  11. 2026-09-16103
Users
-4 since 01.09
96-117 · 11 readings
  1. 2026-09-01107
  2. 2026-09-03110
  3. 2026-09-04117
  4. 2026-09-06113
  5. 2026-09-07110
  6. 2026-09-08106
  7. 2026-09-09111
  8. 2026-09-10112
  9. 2026-09-1396
  10. 2026-09-15103
  11. 2026-09-16103

A dot marks a day the store showed a different number. Between them the line carries the last one forward: we read every listing more than once 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.

We have not read this listing's manifest since we started keeping permission names. The counts above come from the last time we did.

The full permission history for this extension

What changed recently

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

The publisher

seiri-dev publishes 8 listings we track, 2k users between them. Listed website: tools-site.github.io.

  1. CSDN Unlocker seiri-dev · Make Chrome Yours · Accessibility · published 2024-05-07 1k users ★ 1.6
  2. Image Picker seiri-dev · Productivity · Tools · published 2026-03-24 473 users
  3. Website Blocker seiri-dev · Productivity · Tools · published 2024-03-05 32 users
Show 4 more from this publisher
  1. Tab Manager seiri-dev · Productivity · Tools · published 2026-03-17 31 users
  2. OmniDebugger seiri-dev · Productivity · Developer · published 2024-04-06 13 users
  3. ScreenSnap seiri-dev · Productivity · Tools · published 2026-07-08 7 users
  4. QR Sweep Pro seiri-dev · Make Chrome Yours · Accessibility · published 2026-08-28 4 users

Like this one

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

  1. JSON Formatter by Code Architecture Describes nearly the same job, smaller audience 5 users ★ 5.0
  2. Simple JSON Formatter Describes nearly the same job, smaller audience 3 users ★ 5.0
  3. JSON Pretty Describes nearly the same job, with an established audience 10k users ★ 4.6
  4. UD JSON Viewer Describes nearly the same job, smaller audience 5 users ★ 5.0
  5. JSON Formatter & Viewer for Chrome Describes nearly the same job, smaller audience 238 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.

Is this your extension?

Connect it to Ext Ops Panel and see installs, uninstalls and uninstall reasons as events arrive, not as a weekly summary.

See what the panel does

Figures come from our own daily pass over the public Chrome Web Store listing, last read on . We publish no contact details for extension developers.