Download Bezel — Responsive Tester & Device Emulator

Name: Bezel — Responsive Tester & Device Emulator
Author: Alexander Hagenah

By: Alexander Hagenah Add-on

Download Bezel — Responsive Tester & Device Emulator (current and past versions) for Firefox

Latest Version: 0.3.1 Updated: 2 days ago

Ready to install?

Bezel — Responsive Tester & Device Emulator is available to install from Firefox Add-ons Store and for download from this page.

View source code

Available versions

You can find the current and older versions of Bezel — Responsive Tester & Device Emulator here. You can download the archived versions or inspect their source codes.

As a free user, you can download up to 3 latest versions.

Upgrade to download older versions

Version	Download	Size	Timestamp
0.3.1	XPI · ZIP · Source code	352.63KB	2026-07-26
0.2.0	XPI · ZIP · Source code	327.16KB	2026-07-23
0.1.0	XPI · ZIP · Source code	312.29KB	2026-07-16

2026-07-26 · 0 downloads

XPI ZIP Source code

2026-07-23 · 0 downloads

XPI ZIP Source code

2026-07-16 · 0 downloads

XPI ZIP Source code

Install XPI file

An XPI file, short for "XPInstall," is a compressed file format used primarily by Mozilla applications, like Firefox and Thunderbird, to distribute and install add-ons or extensions. These files are similar in function to CRX files for Chrome but cater to the Mozilla ecosystem.

Simply drag-and-drop the XPI into Firefox to install the add-on.

Install ZIP file

Download the Bezel — Responsive Tester & Device Emulator ZIP file.
In Firefox browser, go to about:addons to open Add-ons Manager
Click on ⚙, Install Add-on From File
Select the Bezel — Responsive Tester & Device Emulator ZIP file from step 1. Bezel — Responsive Tester & Device Emulator is now installed on your browser.