A simple extension that allows users to view custom css on GitHub profiles.

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 Firefox 
   
 Chrome 
 

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Usage

For User Pages

Create a user.css file inside your user profile repository (e.g. github.com/someuser/someuser).

For Repositories

Create a repo.css file inside your repository. (e.g. github.com.com/someuser/somerepo).

For Organizations

Create a org.css file inside the .github repository (e.g. github.com/someorg/.github).

Building

1. Install required npm packages with npm install after cloning the repository

2. Building the extension

   Run either npm run build:all to build it for all browsers at the same time,
   npm run build:chrome to just build for chromium or
   npm run build:ff to build the extension for firefox.
   

3. The build output is located in dist/

Note

If you try to use the firefox build, you may need to update the manifest.json because there is an issue with the current build tool.
To do this either change background/services.js to background/service_worker.js yourself or simply run the following command:
sed -i 's/background\/scripts\.js/background\/service_worker\.js/g' dist/firefox/manifest.json