resim

Rust package

This crate contains the validated pixel-processing core and the wasm bindings exposed to browser consumers.

Current transforms

• grayscale
• invert
• blur
• brightness
• contrast
• threshold
• sharpen
• saturation
• sepia
• opacity
• gamma
• resize

Core API

Important Rust-side entry points:

• apply_transform
• apply_transform_sequence
• validate_image
• Transform
• ResimError

The core now rejects malformed buffers, zero dimensions, and out-of-range parameter values instead of silently clamping every invalid call.

Browser API

The wasm package exposes:

• getTransformCatalog()
• readImageDataFromCanvas() and writeImageDataToCanvas()
• backward-compatible aliases readCanvasImageData() and writeCanvasImageData()
• individual *ImageData transform functions
• resizeImageData()
• applyCanvasTransform() and the older alias applyTransformToCanvas()

Local workflow

cargo test
wasm-pack build . --target web --out-dir pkg --release
wasm-pack test --headless --chrome

Example

import init, {
  contrastImageData,
  readImageDataFromCanvas,
  writeImageDataToCanvas,
} from "@sinansonmez/resim";

await init();
const imageData = readImageDataFromCanvas(canvas, ctx);
const next = contrastImageData(imageData, 25);
writeImageDataToCanvas(ctx, next);