FSRS Parameter Optimizer

by ishiko732 · Education

Manifest V3 Free

View in Chrome Web Store Data as of 16 Oct 2026

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

Users

−3 in 30 days

Rating

0.0 / 5

unchanged in 30 days

Ratings

0 in 30 days

Store rank

#211K

#177K among extensions

Version

0.2.0

updated 8 Jun 2026

Users

monthly, 7 months

Latest, 16 Oct 2026: 8 usersMove the mouse over the chart for any month

Ratings count

monthly, 7 months

Latest, 16 Oct 2026: 0 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About FSRS Parameter Optimizer

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