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Relay Developer Tools

Chrome extension by Meta · Productivity · Developer

  • Trader

A Chrome extension in Productivity · Developer with 6 000 users, a small but real audience.

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

What the developer says, and 4 screenshots

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

Users
6 000
Rating
5.0 (5 ratings)
Users, last 14 days
unchanged
Rating, last 30 days
Not watched long enough to say
Version
ea7e49ef5253 (2/3/2025)
Updated in the store
2025-02-04
Published
2018-11-11
Manifest
V3
Browser access
2 permissions, 1 site pattern

How it has moved

Users
unchanged since 01.09
6k · 3 readings
  1. 2026-09-016k
  2. 2026-09-066k
  3. 2026-09-146k
Rating
unchanged since 01.09
reviewsrating 5.00 · 3 readings
  1. 2026-09-01reviews5rating5.00
  2. 2026-09-06reviews5rating5.00
  3. 2026-09-14reviews5rating5.00
Users
unchanged since 01.09
6k · 3 readings
  1. 2026-09-016k
  2. 2026-09-066k
  3. 2026-09-146k
Rating
unchanged since 01.09
reviewsrating 5.00 · 3 readings
  1. 2026-09-01reviews5rating5.00
  2. 2026-09-06reviews5rating5.00
  3. 2026-09-14reviews5rating5.00

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

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

  • Run its own code on the pages it can access scripting
  • See when you navigate between pages webNavigation

The full permission history for this extension

What changed recently

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

The publisher

Meta publishes 7 listings we track, 8.1M users between them.

  1. React Developer Tools Meta · Productivity · Developer · published 2013-12-21 5.0M users ★ 3.9
  2. Meta Ads Data Advisor Meta · Productivity · Developer · published 2014-05-28 3.0M users ★ 3.9
  3. Code Verify Meta · Lifestyle · Social · published 2022-02-23 30k users ★ 2.2
Show 3 more from this publisher
  1. Immersive Web Emulator Meta · Productivity · Developer · published 2023-01-25 20k users ★ 4.7
  2. Signals Gateway Pixel Helper Meta · Productivity · Developer · published 2025-02-01 1k users ★ 5.0
  3. Meta Ray-Ban Display Simulator Meta · Productivity · Developer · published 2026-07-02 679 users ★ 5.0

Like this one

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

  1. Experience Layer Devtools Describes nearly the same job, smaller audience 29 users ★ 5.0
  2. GraphPeek Describes nearly the same job, smaller audience 8 users ★ 5.0
  3. Querio - GraphQL and HTTP requests inspector Describes nearly the same job, smaller audience 4k users ★ 4.3
  4. RSC Devtools Describes nearly the same job, smaller audience 3k users ★ 4.9
  5. GraphQL Tracker Describes nearly the same job, smaller audience 9 users ★ 5.0

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.