wasm-image-decoder | Decodes images using Rust 's ` image ` crate

wasm-image-decoder is a JavaScript library typically used in Binary Executable Format applications. wasm-image-decoder has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.

Decodes images using Rust's image crate compiled to WebAssembly. By default it uses 4 threads (though some decoders are single-threaded) since it doesn't seem to get much faster if I add any more. You can edit mod.js to change the number of threads. Works in the browser and in Deno. Note: This can only be used within a Web Worker due to wasm not supporting blocking/waiting operations when executed in the main thread (related comment). You can use comlink to make it easy to use this module from the main thread. As of writing it's about 3x slower than native Rust. Drawing the image to an OffscreenCanvas and then extracting the image data is the same speed as native Rust, so use that if your JS runtime has it available. The communication overhead between JS and the wasm module is negligible, so the slowness is probably due to missing functionality and lack of optimisation in wasm runtimes (e.g. thread/simd/etc. optimisations), so the performance should improve with time.