Stable signalNo paid features detectedMedium-risk permissions

Responsive Tester

Test responsive web designs or mobile pages and see if it is mobile friendly

Users40KCurrent public install base

Rating3.1Store average score

Reviews95Public review volume

Manifest versionV3Extension platform version

7-day growth0Net users gained this week

7-day growth rate0%Relative weekly velocity

Preview

Responsive Tester Media preview

3 assets

Trend

User growth trend

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User Growth Over Time

Rating trend

7-day rating trend

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7-day rating change

Start

3.11

Latest

3.11

7-day rating change

0.00

2026年7月15日2026年7月21日

Growth overview

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1-day growthFlat

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Technical snapshot

Version, languages, and crawl freshness

Review publication date, version, supported languages, and crawl timestamps.

Version3.0.0

ManifestV3

Size82.41KiB

Languages38Deutsch / English / Filipino +35

Published--

Store updated--

Last crawled--

Overview

Product summary

Review the store description, core capabilities, and common use cases.

Test responsive web designs or mobile pages that detect specific user agents. Test multiple devices at the same time!

The Mobile/Responsive Tester extension allows Developers to test their web pages against common mobile, phablet and tablet devices by emulating the user agent and screen resolution.

Excellent for testing responsive web designs. Easily switch between portrait and landscape mode and test multiple mobile device's at the same time!

To begin using the software, install our extension.

Navigate to the webpage you wish to test for different resolution sizes.

Click on our software extension icon, and then choose the resolution size.

Reviews

Recent review snapshot

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Store average score3.1Chrome Web Store aggregate rating, including ratings without synced review text

Synced text average2.7Average computed only from synced review bodies below

Reviews with text57Synced review bodies

Total ratings / reviews95Chrome Web Store public rating/review count

Store average score: 3.1. The bars below are calculated from synced review text only, so they may be empty for extensions that have public ratings but no synced comments yet.

5★

4★

3★

2★

1★

Abdelrahman Amr2022年9月11日

simply didn't work

Jorge2022年5月28日

Está desactualizado y no da el tamaño real

김예진 (Gabbi)2022年5月27日

device selection buttons are not workign at all

taoufik bakkali2022年3月30日

جميل جدا

Glamoura Dominaxia2022年3月23日

Simple, works well. Thank you!

Anton Nikitsiuk2021年10月30日

None of the other (as well as the standard Chrome adapter) show the site as it actually is on mobiles Thanks!

Oficina do Engenhocas2021年10月7日

nice

Matrix Infologics2021年9月10日

Useless not working, wastage of time

David Mike2021年8月18日

nice device simulation, i am a web developer and this extension has helped me a lot while coding with visual studio code

business account of Sara Jahanbakhsh2021年7月6日

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AI product read

Responsive web design testing tool that opens the current webpage in a new window sized to specific mobile/tablet/phablet device screen resolutions

Web developers need to quickly verify that their responsive designs render correctly at various mobile device screen sizes without needing actual devices

1. Navigate to any webpage. 2. Click the extension icon to open the popup. 3. Select a device from the categorized list (Smartphones/Phablets/Tablets). 4. The current page URL opens in a new browser window sized to that device's screen resolution for visual testing.

Target users: Web developers / UI/UX designers / QA testers / Front-end developers

The extension's approach is basic - it only resizes windows, it does not actually emulate user agents, touch events, or CSS media queries as the store description claims
No user-agent spoofing code detected despite the description mentioning 'emulating the user agent'
The homepage_url points to test-responsive.dllplayer.com which was not inspected (external service)

Monetization

No paid features detected

No payment, subscription, premium, upgrade, or billing logic exists anywhere in the extension. All device testing options are freely available. The 'pro' keyword matches are false positives from locale translations (e.g., 'Prova' in Catalan/Italian) and device names (iPad Pro, Surface Pro). The 'license' hit is from jQuery's MIT license header.

Confidence: 100
Payment platform: --
Source: AI / High
Login required: No
Reason: The extension has no login UI, no authentication flow, no account system, and no communication with any backend for authentication. It works entirely locally by opening browser windows at specific device resolutions. The only 'token' hit is from jQuery internals, not authentication.

Permission risk

Medium-risk permissions

This estimate uses declared permissions and host permissions to assess access scope and sensitivity.

扩展能力较强：activeTab

Publisher

Cool and Fun Software

Independent publisher

Email: [email protected]
Phone: --
Address: --

Public contact fields are shown above. Developer portfolio pages are available on paid accounts.

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Permissions

Host access