FSRS Parameter Optimizer

Tracking since Apr 1, 2026.

Changelog

• Jun 10, 2026
  description

  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

  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
  
  
  source code: https://github.com/ishiko732/fsrs-wxt

• Jun 10, 2026
  short_description

  Optimize FSRS parameters from review logs using WASM

  Optimize FSRS parameters from local Anki review logs. All processing runs locally in your browser.

Permissions & access

Permissions

None declared

Host access

None declared

Screenshots