FSRS Parameter Optimizer

Optimize FSRS parameters from review logs using WASM

Optimize your Anki FSRS spaced repetition parameters directly in your browser — no server required. Upload your Anki review log CSV file, configure your timezone and preferences, and get optimized FSRS parameters in seconds. The extension runs the official FSRS-rs algorithm compiled to WebAssembly for near-native performance. Features: - WASM-Powered: Runs the official FSRS algorithm via WebAssembly - 100% Offline: All computation happens locally — your data never leaves your machine - Dual Mode: Generates parameters for both short-term enabled and disabled modes - Fast: Get results in seconds with no server round-trips - Simple: Drag-and-drop CSV upload with an intuitive interface - Supports files up to 100MB How to use: 1. Export your Anki review logs as a CSV file 2. Upload the CSV file into the extension 3. Configure your timezone and settings 4. Click "Optimize Parameters" 5. Copy the optimized parameters into Anki