Diff Anything

Diff Anything compares two files or two folders on Mac and Windows and shows exactly what changed, in a view made for each kind of file.

• Spreadsheets: Excel, OpenDocument and Numbers workbooks are compared row by row, even across formats, and each changed row names the cells that changed. A CSV export can be checked against the sheet it came from.
• Documents and PDFs: Word, PowerPoint, OpenDocument, RTF and PDF text is compared paragraph by paragraph, so a PDF can be compared with the Word document it was made from. PDF pages can also be compared visually, and Word documents show formatting changes too.
• Folders: two folders side by side, with a preview pane for the selected file, moved-file detection, ignore rules, and archives such as ZIP, 7z, RAR and TAR compared entry by entry.
• Code and data: side-by-side text diffs with syntax highlighting. JSON, YAML, TOML, XML, CSV, OpenAPI, SQLite databases and Jupyter notebooks are compared by their structure, not line by line.
• Images: overlay, swipe, blink and heatmap views, with regions you can ignore.

Everything runs on your computer: files are never uploaded, there is no account, and no AI is involved.

The free version lets you try every comparison with limits (files up to 5 MiB per side, 10 new comparisons a day, the first 100 results of a list). A one-time Pro purchase removes the limits and adds folder synchronization, three-way merge and conflict resolution, saved profiles, reports, and every command-line mode. The Microsoft Store version includes the command line; on a Mac, a free helper download adds it.