Ext Ops Panel
Open the app

Responsive Checker - Mobile Simulator Pro

Chrome extension by muji.star657 · Productivity · Tools

A Chrome extension in Productivity · Tools with 9 users, barely installed.

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

What the developer says, and 5 screenshots

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

Users
9
Rating
not rated yet
Users, last 10 days
-1
Version
1.0.2
Updated in the store
2026-07-26
Published
2026-07-24
Manifest
V3
Browser access
4 permissions, 1 site pattern

How it has moved

Users
-1 since 01.09
9-11 · 6 readings
  1. 2026-09-0110
  2. 2026-09-0311
  3. 2026-09-0610
  4. 2026-09-079
  5. 2026-09-0810
  6. 2026-09-109
Users
-1 since 01.09
9-11 · 6 readings
  1. 2026-09-0110
  2. 2026-09-0311
  3. 2026-09-0610
  4. 2026-09-079
  5. 2026-09-0810
  6. 2026-09-109

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.

  • See the address and title of every tab you have open tabs
  • Block or redirect requests by rules it declares in advance declarativeNetRequest
  • Act on the current tab, but only after you click it activeTab
Show the remaining 1
  • 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

muji.star657 publishes 14 listings we track, 252 users between them.

  1. Bulk URL Opener - Open Multiple Links muji.star657 · Productivity · Tools · published 2026-07-11 100 users
  2. All in One SEO Checker muji.star657 · Productivity · Developer · published 2026-06-25 47 users ★ 5.0
  3. Volume Booster: Sound Booster & Equalizer muji.star657 · Productivity · Tools · published 2026-07-08 30 users ★ 5.0
Show 5 more from this publisher
  1. Extension On Off muji.star657 · Productivity · Tools · published 2026-07-20 18 users ★ 5.0
  2. SEO Pro Extension by Utah SEO Services muji.star657 · Productivity · Tools · published 2026-07-09 12 users ★ 5.0
  3. Metadados Remover muji.star657 · Productivity · Tools · published 2026-06-26 9 users
  4. Full Page Screenshot & Capture muji.star657 · Productivity · Tools · published 2026-07-14 8 users
  5. PixelProbe — Marketing Event Debugger muji.star657 · Productivity · Tools · published 2026-06-20 8 users

Like this one

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

  1. Free Mobile Simulatore - Responsiveness testing Describes nearly the same job, smaller audience 144 users
  2. Mobile simulator - responsive testing tool Describes nearly the same job, with a large installed audience 1.0M users ★ 4.9
  3. PocketView - Responsive Design Simulator Describes nearly the same job 0 users
  4. Phone Simulator — Mobile Viewer & Responsive Tester Describes nearly the same job, smaller audience 16 users
  5. Mobile Simulator - Responsive Test 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.

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.