I rebuilt my old image processing library with Rust + WebAssembly

Source: Dev.to

Rebuilding an old browser image library with Rust + WebAssembly

I originally started this project as a small practice project for two things:

• publishing a library
• learning Rust + WebAssembly in a real workflow

I paused it for a while, and recently came back to improve it properly: img-toolkit.

It’s a browser image‑processing library with a Rust/WASM core and a JS/TS wrapper.

• resize
• format convert (jpg/png/webp)
• brightness adjustment

GitHub:
Demo:
npm:

Why I restarted it

I wanted to turn it from a simple practice repo into something cleaner and actually usable.

Recent improvements

• API cleanup with clearer function boundaries:
  • processImage
  • resize
  • convertFormat
  • adjustBrightness
• Better WebP behavior across runtime environments
• Cleaner user‑facing error behavior
• Documentation and release process improvements

Quick comparison (same source image)

(Comparison images are in the README.)

It’s still a work in progress, but it’s now much more usable than before. If you try it, I’d really appreciate feedback on API design and real‑world use cases.