Drop files or a folder here
Supports all programming languages · No files loaded
Why Use DiffMergy’s Code Review Tool?
DiffMergy’s Code Review tool gives you instant static analysis for any source file or project folder. It automatically detects security vulnerabilities, code smells, refactoring opportunities, and unit test coverage gaps across 30+ programming languages — all within your browser.
Simply drag and drop a file or folder to receive a comprehensive health score with actionable findings. Perfect for pre-commit checks, onboarding new codebases, or teaching best practices without uploading proprietary code.
100% Private — No Server Upload
All processing happens entirely in your browser using Web Workers and modern browser APIs. Your sensitive source code, credentials, and files never leave your device — no servers, no databases, no tracking, no sign-up required.
Fast & Reliable
Built with vanilla TypeScript and a lightweight custom engine, DiffMergy delivers sub-millisecond processing with zero network latency. The entire toolkit works on any modern browser across all operating systems, with no installation or setup needed.