Crowdsourced Redlines

What Crowdsourced Redlines is

Crowdsourced Redlines compares two Microsoft Word .docx files and creates a third file with insertions, deletions, and moves marked as native Word tracked changes. Reviewers can accept or reject changes individually in Word. The browser app performs comparisons locally using WebAssembly in a Web Worker and downloads the result directly to the device; its default workflow does not upload files to a server. An optional API processes documents in memory and stores nothing. The comparison engine adds move and formatting-change detection, along with improved table handling, to a .NET 8 WebAssembly modernization of Microsoft’s archived Open-Xml-PowerTools comparison engine. The engine, document viewer, Python wrapper, and web app are MIT-licensed and publicly developed on GitHub. Users can self-host, audit, or embed the codebase, and developer packages are available for TypeScript or JavaScript, Python, and C#/.NET. Users can submit a public ticket with source files when a comparison is poor; the ticket becomes a regression-test fixture. Crowdsourced Redlines is free, with web, API, and self-hosted options.