Download CSS Sentry

Name: CSS Sentry
Author: dougg0k

By: dougg0k

Download CSS Sentry (current and past versions) for Firefox

Latest Version: 1.0.107 Updated: 20 days ago

Ready to install?

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

View source code

Daily users

—

No ratings yet

Total downloads

Available versions

You can find the current and older versions of CSS Sentry 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
1.0.92	XPI · ZIP · Source code	271.09KB	2026-05-17
1.0.107	XPI · ZIP · Source code	272.21KB	2026-05-17
1.0.77	XPI · ZIP · Source code	269.21KB	2026-05-16
1.0.67	Paid users only	266.10KB	2026-05-14
1.0.59	Paid users only	265.50KB	2026-05-13
1.0.34	Paid users only	820.53KB	2026-05-13
1.0.21	Paid users only	795.52KB	2026-05-04

2026-05-17 · 0 downloads

XPI ZIP Source code

2026-05-17 · 0 downloads

XPI ZIP Source code

2026-05-16 · 0 downloads

XPI ZIP Source code

2026-05-14 · 0 downloads

Paid users only

2026-05-13 · 0 downloads

Paid users only

2026-05-13 · 0 downloads

Paid users only

2026-05-04 · 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 CSS Sentry ZIP file.
In Firefox browser, go to about:addons to open Add-ons Manager
Click on ⚙, Install Add-on From File
Select the CSS Sentry ZIP file from step 1. CSS Sentry is now installed on your browser.