Over the last 18 months, a handful of web-based patchers have emerged. These tools leverage WebAssembly (WASM) to run XDelta code directly inside your browser. The "new" in our keyword refers to these modern, client-side patchers that offer three massive advantages:
Specifically designed for xdelta3 formats with secondary compression, running entirely on your local machine via web workers.
: A popular choice for the romhacking community that allows users to drag and drop files to apply patches instantly.
Last updated: January 2025. Tools and URLs verified functional.