By: swcolegrove Add-on
Download CSS Override (current and past versions) for Firefox
Latest Version:
1.0 Updated:
7 years ago
Ready to install?
CSS Override is available to install from Firefox Add-ons Store and for download from this page.
1,959
Daily users
28 ratings
1
Total downloads
Available versions
You can find the current and older versions of CSS Override 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 | Download count | Timestamp |
|---|---|---|---|---|
| 1.0 | XPI · ZIP · Source code | 20.02KB | 1 | 2019-10-08 |
1.0 20.02KB
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 Override ZIP file.
- In Firefox browser, go to
about:addonsto open Add-ons Manager - Click on ⚙, Install Add-on From File

- Select the CSS Override ZIP file from step 1. CSS Override is now installed on your browser.
Best CSS Override Alternatives
Here are some Firefox add-ons that are similar to CSS Override:
Site Customizer
Andrew H.
Simple Custom CSS
Nick G.
Custom CSS rules
sina
Your Custom Css
Bekurkes
CSS Injector
Francesco De Stefano
Site customizer
Rico
CSS Edit
keyser
Custom Style
cywu
stylextension
Firefox user 13014860
Per-Domain User CSS
ArachnidFight
Telescope CSS
TecnoSamba
Element CSS
Lance Borden