See which files were added, deleted or modified between two local folders, with line-by-line diffs for text files. Runs entirely in your browser.
📂Recursive folder scan — Pick or drag two folders; every subfolder is scanned and files are matched by relative path.
⚡Smart, fast comparison — Different sizes are flagged instantly; equal-size files are compared byte by byte in parallel Web Workers. Fast mode checks size + date only.
📝Line-by-line text diff — Open any modified text or code file for a unified or split diff, and copy a unified patch.
🖼️Image side-by-side preview — Changed PNG, JPG, GIF, WebP and SVG images are shown side by side with their dimensions.