# Reddit Tweaks Firefox Extension > **Note:** This project was built with the aid of [Cursor](https://cursor.com) and Claude. This is a personal project, kept public for reference only. It will never be published to AMO (addons.mozilla.org). If you use it, expect to customize things to your own taste — it's opinionated by design. ## What it does A Firefox extension that reskins [old.reddit.com](https://old.reddit.com) with a handful of visual tweaks: - **Badge layout** — replaces the default subreddit link and comment count with styled badges - **Card layout** — wraps posts in rounded cards with configurable density, spacing, and background style - **Font override** — swaps in Reddit Sans (and Reddit Mono for code blocks) site-wide - **Color customization** — per-subreddit badge colors via an inline HSV picker - **Theming** — separate light/dark palettes with automatic RES night-mode detection ## Screenshots ![Extension overview](docs/reddit-extension-collage.png) > Extension menu (left), standard old.reddit.com (top right), with extension enabled (bottom right). > RES (Reddit Enhancement Suite) was enabled during capture. | View | Full-size image | |---|---| | Extension menu | [reddit-extension-popup.png](docs/reddit-extension-popup.png) | | Without extension | [reddit-extension-disabled.png](docs/reddit-extension-disabled.png) | | With extension | [reddit-extension-enabled.png](docs/reddit-extension-enabled.png) | ## Installation 1. Clone or download this repo 2. Open Firefox and navigate to `about:debugging#/runtime/this-firefox` 3. Click **Load Temporary Add-on...** 4. Select the `manifest.json` file from this repo's root The extension will stay loaded until you close Firefox. Repeat step 2-4 after restart. ## Settings Click the extension icon in the toolbar to open the settings popup. All toggles, color pickers, density controls, and presets live there. ## Fonts Reddit Sans, Reddit Sans Condensed, and Reddit Mono are bundled under the [SIL Open Font License 1.1](content/fonts/OFL.txt). See that file for full license text and copyright info. ## License Extension code is [MIT](LICENSE). Bundled fonts are under the [SIL Open Font License 1.1](content/fonts/OFL.txt).