# Comparium browser testing

> Check how your website looks and works under any operating system, browser and its version.

Canonical page: [https://chrome-stats.com/d/comparium-browser-testing](https://chrome-stats.com/d/comparium-browser-testing)

## Overview

- **ID:** `comparium-browser-testing`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Removed
- **Publisher:** VB88
- **Daily users:** 1
- **Version:** 1.2
- **Last updated:** 2025-04-17
- **First published:** 2025-04-14
- **Size:** 435 KB
- **Data as of:** 2026-05-13
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/comparium-browser-testing/)

## Description

Check how your website looks and works under any operating system, browser and its version.

Comparium Extension allows you to capture screenshots of a web page and run real time tests with just a single click right from Firefox browser. 

Perform cross browser testing across multiple browsers and operating systems with no need of installing and maintaining an expensive device lab. Analyze visual inconsistencies and functional errors, check the behavior of your online resource in real user conditions with ease and in a matter of seconds. Make sure your web resource looks the same no matter the platform and device.

Features offered in Comparium:
Instant access to multiple browsers and operating systems.
Wide range of screen resolutions.
Ability to perform real-time testing.
Unlimited number of screenshots per session.
Manual and automatic screenshots comparison mode.
Ability to compare screenshots with mockup.

To learn more, please visit our official site: https://comparium.app/ 

Please note that you need to have and be logged in to a Comparium account before using Comparium Chrome extension. If you don’t have an account you can create it from the extension or by following this link: https://front.comparium.app/?screen_hint=signUp

## Permissions and access

### Permissions

- `tabs`
- `storage`

## Safety

- **Risk impact:** Moderate risk impact
- **Risk likelihood:** High risk likelihood

### Analysis details

- Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
- This extension is not longer available in the store

## Similar extensions and apps

- [Browserling - Cross-browser testing](https://chrome-stats.com/d/cross-browser-testing) — 195 users, 1.75 / 5
- [Responsive Design Tester Pro](https://chrome-stats.com/d/responsive-design-tester-pro) — 14 users, 1.00 / 5
- [Compare Text](https://chrome-stats.com/d/compare-text) — 19 users
- [Bezel — Responsive Tester & Device Emulator](https://chrome-stats.com/d/bezel-responsive-emulator) — 12 users, 5.00 / 5
- [TestingBot](https://chrome-stats.com/d/testingbot) — 1 users
- [Compatibility Tester](https://chrome-stats.com/d/compatibility-tester)
- [Full Page Screen Capture & Visual Feedback](https://chrome-stats.com/d/fullpage-screen-capture-plerdy) — 1,569 users, 3.19 / 5
- [ScreenshotMonitor](https://chrome-stats.com/d/screenshotmonitor) — 5 users
- [DevSuite Pro](https://chrome-stats.com/d/devsuite-pro) — 11 users
- [Online Screenshot Capture](https://chrome-stats.com/d/online-screenshot-capture) — 1 users
- [mobile-simulator-tool](https://chrome-stats.com/d/mobile-simulator-tool) — 18 users
- [BlazeMeter](https://chrome-stats.com/d/blazemeter) — 138 users

---

Source: [Chrome-Stats](https://chrome-stats.com/d/comparium-browser-testing)