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Responsive Tester - Multi-Screen Simulator

Chrome extension by thong.nguyenn56 · Productivity · Developer

  • Established publisher
  • Trader

A Chrome extension in Productivity · Developer with 8 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 4 screenshots

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

Users
8
Rating
5.0 (4 ratings)
Users, last 10 days
+8
Rating, last 30 days
Not watched long enough to say
Version
2.0.7
Updated in the store
2026-10-03
Published
2026-09-24
Manifest
V3
Browser access
13 permissions, 1 site pattern

How it has moved

Users
+8 since 25.09
0-8 · 4 readings
2026-09-25: appeared in the store2026-09-28: released 1.0.62026-09-30: gained the good publisher record badge2026-10-01: released 2.0.02026-10-02: released 2.0.22026-10-02: released 2.0.62026-10-03: released 2.0.7
  1. 2026-09-250appeared in the store
  2. 2026-09-266
  3. 2026-09-288released 1.0.6
  4. 2026-10-048
Rating
+5.00 since 25.09
reviewsrating 0.00-5.00 · 4 readings
2026-09-25: appeared in the store2026-09-28: released 1.0.62026-09-30: gained the good publisher record badge2026-10-01: released 2.0.02026-10-02: released 2.0.22026-10-02: released 2.0.62026-10-03: released 2.0.7
  1. 2026-09-25reviews0rating0.00appeared in the store
  2. 2026-09-26reviews4rating5.00
  3. 2026-09-28reviews4rating5.00released 1.0.6
  4. 2026-10-04reviews4rating5.00
Users
+8 since 25.09
0-8 · 4 readings
2026-09-25: appeared in the store2026-09-28: released 1.0.62026-09-30: gained the good publisher record badge2026-10-01: released 2.0.02026-10-02: released 2.0.22026-10-02: released 2.0.62026-10-03: released 2.0.7
  1. 2026-09-250appeared in the store
  2. 2026-09-266
  3. 2026-09-288released 1.0.6
  4. 2026-10-048
Rating
+5.00 since 25.09
reviewsrating 0.00-5.00 · 4 readings
2026-09-25: appeared in the store2026-09-28: released 1.0.62026-09-30: gained the good publisher record badge2026-10-01: released 2.0.02026-10-02: released 2.0.22026-10-02: released 2.0.62026-10-03: released 2.0.7
  1. 2026-09-25reviews0rating0.00appeared in the store
  2. 2026-09-26reviews4rating5.00
  3. 2026-09-28reviews4rating5.00released 1.0.6
  4. 2026-10-04reviews4rating5.00

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.

  • Clear your browsing data browsingData
  • Capture the contents of your screen desktopCapture
  • Capture the contents of a tab tabCapture
Show the remaining 10
  • See the address and title of every tab you have open tabs
  • Block or redirect requests by rules it declares in advance declarativeNetRequest
  • Block or redirect requests on the sites it can access declarativeNetRequestWithHostAccess
  • Run its own code on the pages it can access scripting
  • See when you navigate between pages webNavigation
  • Act on the current tab, but only after you click it activeTab
  • Add items to the right-click menu contextMenus
  • Run work in a hidden page offscreen
  • Store data in your browser storage
  • Store data in your browser without the usual size limit unlimitedStorage

The full permission history for this extension

Version history

  1. Version 2.0.7
  2. Version 2.0.6
  3. Version 2.0.2
Show the remaining 2
  1. Version 2.0.0 · Asked for more permissions (14, was 8)
  2. Version 1.0.6

What changed recently

  1. Package size changed
  2. Supported languages changed (2 → 4)
  3. Released version 2.0.7 (was 2.0.6)
Show the remaining 9
  1. Released version 2.0.6 (was 2.0.2)
  2. Released version 2.0.2 (was 2.0.0)
  3. Package size changed
  4. Asked for more permissions (14, was 8)
  5. Store description rewritten
  6. Released version 2.0.0 (was 1.0.6)
  7. Store badges changed
  8. Package size changed
  9. Released version 1.0.6 (was 1.0.2)

Older entries and the full day by day series are in the app.

The publisher

thong.nguyenn56 publishes 2 listings we track, 8 users between them. Listed website: responsivetester.info.

  1. UI Tweaker: Web Inspector & Screen Recorder thong.nguyenn56 · Productivity · Developer · published 2026-10-03 audience not published

Like this one

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

  1. MobileReady: Mobile Simulator & Responsive Tester Describes nearly the same job, smaller audience 103 users ★ 5.0
  2. Mobile Lab: Responsive Testing & Screenshots Describes nearly the same job, smaller audience 14 users
  3. ViewPortIQ Describes nearly the same job, smaller audience 8 users ★ 4.5
  4. Responsive Tester - Mobile View, Breakpoint Checker & CSS Editor Describes nearly the same job, smaller audience 53 users
  5. ScreenLab Describes nearly the same job, smaller audience 14 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.