How Client-Side Image Tools Work
ezjxl.com represents a shift in modern web architecture. Instead of relying on centralized backend server farms, we offload the computing tasks directly to the user's browser. Here is the technical breakdown of our stack:
1. WebAssembly Codecs (Wasm)
Formats like JPEG XL and HEIC do not have native browser support in all engines. To read and write these formats, we download small, optimized WebAssembly libraries (such as `@jsquash/jxl` and `heic2any`). WASM allows high-performance C++ code to execute at near-native speeds directly in JavaScript.
2. HTML5 Canvas & Blob APIs
For scaling, rotating, cropping, and applying color filters, we load image frames into standard `
3. ZIP Compilations & File Management
For batch operations, we load files into an asynchronous JavaScript queue. When you click download all, `JSZip` compiles all converted Blobs into a single `.zip` file entirely in your browser memory before initiating the browser download trigger.