User styles manager for Pale Moon and other Mozilla-style software
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Stylem - a user style manager for Pale Moon, Basilisk, Interlink, SeaMonkey, and other Mozilla-based software. Install styles from to change how web pages and the application look.


Pull requests are welcome. Translation work can be done with a pull request.


Simply download the contents of the “src” folder and pack the contents into a .zip file. Then, rename the file to .xpi and drag into the browser.

On Unix systems (or Windows 10, with WSL) you can optionally run instead. Running this as-is will produce a .xpi file ending in -dev, and if run from the command line and appending a number (e.g. ./ 2) will append that number to the filename instead.

Information on producing the xpt files featured here using the idl files in src/idl/ can be found on MDN.


You can grab the latest release either from the Releases section of this repository, or the Pale Moon Add-Ons Site. Please ensure that Stylish is disabled or removed (if installed) before installing to prevent any issues. Stylem will pick up any installed styles.


Copyright (C) 2005-2014 Jason Barnabe

Copyright (C) 2018+ Stylem Contributors

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see