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Custom UserAgent String

Chrome extension by Grephy · Productivity · Developer

  • Featured
  • Established publisher

A Chrome extension in Productivity · Developer with 30 000 users, an established extension.

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

What the developer says, and 2 screenshots

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

Users
30 000
Rating
3.8 (37 ratings)
Users, last 17 days
unchanged
Rating, last 30 days
Not watched long enough to say
Version
0.2.5
Updated in the store
2026-06-10
Published
2015-12-15
Manifest
V3
Browser access
2 permissions, 3 site patterns

How it has moved

Users
unchanged since 01.09
30k · 2 readings
  1. 2026-09-0130k
  2. 2026-09-1730k
Rating
unchanged since 01.09
reviewsrating 3.84 · 2 readings
  1. 2026-09-01reviews37rating3.84
  2. 2026-09-17reviews37rating3.84
Users
unchanged since 01.09
30k · 2 readings
  1. 2026-09-0130k
  2. 2026-09-1730k
Rating
unchanged since 01.09
reviewsrating 3.84 · 2 readings
  1. 2026-09-01reviews37rating3.84
  2. 2026-09-17reviews37rating3.84

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.

  • Block or redirect requests by rules it declares in advance declarativeNetRequest
  • 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

Grephy publishes 18 listings we track, 3.3M users between them.

  1. Dark Mode Grephy · Productivity · Tools · published 2017-02-20 2.0M users ★ 3.6
  2. Screen Recorder Grephy · Productivity · Tools · published 2017-11-01 300k users ★ 3.1
  3. WebRTC Control Grephy · Productivity · Developer · published 2015-12-26 300k users ★ 4.5
Show 5 more from this publisher
  1. Audio Downloader Prime Grephy · Productivity · Tools · published 2016-01-19 300k users ★ 3.7
  2. Keep Awake (Display | System) Grephy · Productivity · Tools · published 2017-10-29 100k users ★ 4.3
  3. Enhancer for WhatsApp™ Grephy · Lifestyle · Social · published 2016-02-02 70k users ★ 3.6
  4. Enhancer for Telegram™ Grephy · Lifestyle · Social · published 2016-02-29 50k users ★ 3.9
  5. Video Downloader Prime Grephy · Productivity · Tools · published 2015-12-19 50k users ★ 3.2

Like this one

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

  1. Advanced User Agent Switcher Describes nearly the same job, smaller audience 3k users ★ 3.0
  2. User-Agent Switcher and Manager Describes nearly the same job, with a large installed audience 400k users ★ 4.3
  3. User Agent Switcher Describes nearly the same job, with a large installed audience 100k users ★ 4.1
  4. User-Agent Changer Describes nearly the same job, smaller audience 7 users
  5. User-Agent 模拟器 Describes nearly the same job, smaller audience 585 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.

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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.