Responsive Checker - Mobile Simulator Pro
Chrome extension by muji.star657 · Productivity · Tools
A Chrome extension in Productivity · Tools with 11 users, barely installed. Audience over the last 30 days: -2.
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
- 11
- Users, last 30 days
- -2
- 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
- 2026-10-0415
- 2026-10-0813
- 2026-10-0914
- 2026-10-1012
- 2026-10-1313
- 2026-10-1714
- 2026-10-1815
- 2026-10-1914
- 2026-10-2213
- 2026-10-2314
- 2026-10-2413
- 2026-10-2512
- 2026-10-2811
- 2026-09-0110
- 2026-09-0311
- 2026-09-0610
- 2026-09-079
- 2026-09-0810
- 2026-09-109
- 2026-09-1312
- 2026-09-1611
- 2026-09-2112
- 2026-09-2613
- 2026-10-0415
- 2026-10-0813
- 2026-10-0914
- 2026-10-1012
- 2026-10-1313
- 2026-10-1714
- 2026-10-1815
- 2026-10-1914
- 2026-10-2213
- 2026-10-2314
- 2026-10-2413
- 2026-10-2512
- 2026-10-2811
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
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
What changed recently
Nothing has moved on this listing since we started watching it.
The publisher
muji.star657 publishes 14 listings we track, 411 users between them.
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Bulk URL Opener - Open Multiple Links 97 users
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All in One SEO Checker 50 users
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-
Full Page Screenshot & Capture 8 users
Like this one
Listings the catalog judges closest in what they say they do.
-
Free Mobile Simulatore - Responsiveness testing 148 users
-
PocketView - Responsive Design Simulator 20 users
-
Phone Simulator — Mobile Viewer & Responsive Tester 28 users
-
Mobile simulator - responsive testing tool 1.0M users
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Mobile Simulator - Responsive Test 13 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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Connect it to Ext Ops Panel and see installs, uninstalls and uninstall reasons as events arrive, not as a weekly summary.
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The badge shows the audience and rating from our last pass over the store and links back to this page.
[](https://extops.dev/extensions/geccfgdkakfnnibmnbgalmbocmicdebf)<a href="https://extops.dev/extensions/geccfgdkakfnnibmnbgalmbocmicdebf"><img src="https://extops.dev/extensions/geccfgdkakfnnibmnbgalmbocmicdebf/badge.svg" alt="Users and rating on Ext Ops Panel" height="20"></a>Figures come from our own regular passes over the public Chrome Web Store listing, last read on . The store last changed these figures on 2026-10-28. We publish no contact details for extension developers.