Protonfox is an extension for Firefox that displays ProtonDB ratings on Steam.

Requirements:

• Node.js (recommended version: 22.x)
• pnpm package manager (recommended version: 9.x)

To build the extension:

• Run pnpm install to install dependencies.
• Run pnpm run build to build the extension.

• ProtonDB - Provides game compatibility ratings
• Are We Anti-Cheat Yet? - Provides anti-cheat compatibility statuses
• MostwantedRBX/proton-chrome-extension - Inspired by this extension

This extension is not affiliated with ProtonDB and/or Valve Corporation.