Download Accesserty DevCheck

Name: Accesserty DevCheck
Author: Accesserty

By: Accesserty Add-on

Download Accesserty DevCheck (current and past versions) for Firefox

Latest Version: 1.3.3 Updated: 4 days ago

Ready to install?

Accesserty DevCheck is available to install from Firefox Add-ons Store and for download from this page.

View source code

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Total downloads

Available versions

You can find the current and older versions of Accesserty DevCheck 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
1.3.3	XPI · ZIP · Source code	1.12MB	2026-09-03
1.3.2	XPI · ZIP · Source code	978.53KB	2026-07-24
1.3.1	XPI · ZIP · Source code	976.85KB	2026-07-23
1.3.0	Paid users only	974.04KB	2026-07-23
1.2.6	Paid users only	945.26KB	2026-07-03
1.2.5	Paid users only	955.50KB	2026-07-01
1.2.3	Paid users only	932.79KB	2026-06-26

2026-09-03 · 0 downloads

XPI ZIP Source code

2026-07-24 · 0 downloads

XPI ZIP Source code

2026-07-23 · 0 downloads

XPI ZIP Source code

2026-07-23 · 0 downloads

Paid users only

2026-07-03 · 0 downloads

Paid users only

2026-07-01 · 0 downloads

Paid users only

2026-06-26 · 0 downloads

Paid users only

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 Accesserty DevCheck ZIP file.
In Firefox browser, go to about:addons to open Add-ons Manager
Click on ⚙, Install Add-on From File
Select the Accesserty DevCheck ZIP file from step 1. Accesserty DevCheck is now installed on your browser.