Tool: YARA Playground

Hi all,

I often find myself needing to sanity-check a YARA rule against a test

string or small binary, but spinning up the CLI or Docker feels heavy.

So I built **YARA Playground** – a single-page web app that compiles

`libyara` to WebAssembly and runs entirely client-side (no samples leave

your browser).

• CodeMirror 6 editors for rule + sample

• WASM YARA-X engine, error guard for slow patterns

• Shows pretty JSON, and tabular matches

• Supports 10 MiB binary upload, auto-persists last rule/sample

https://www.yaraplayground.com

Tech stack: Vite, TypeScript, CodeMirror, libyara-wasm (≈230 kB),

Would love feedback, feature requests or bug reports (especially edge-

case rules).

I hope it's useful to someone, thanks!