7diffs
Compare texts and files fast, offline, and directly.
No internet, no server, no uploads.
macOS
Android
iOS
Windows
Linux
Compare texts and files fast, offline, and directly.
No internet, no server, no uploads.
macOS
Android
iOS
Windows
Linux
Why use
See differences update instantly as you type or paste text. The diff is calculated in a separate thread for smooth performance.
Diff lines are compared with a character-level LCS algorithm, highlighting exactly what was added, removed, or changed.
Open text files directly and compare content side by side. Supports Dart, Python, JavaScript, TypeScript, JSON, YAML, Markdown, SQL, and 30+ text formats.
Everything runs locally on your device. No account, no upload, no external server — just private diffing.
The story behind
7diffs was created to make text comparison fast, precise, and private. It helps developers, QA engineers, and writers compare code and text without leaving their device.
The app uses a pure LCS diff algorithm to produce accurate results, with a fallback for very large files. Inline changes are highlighted at the character level, making it easy to spot exactly what changed.
Paste text into the original and modified panels or open files directly. 7diffs shows the diff automatically, with a clean interface built for quick analysis.
Real-time diff updates as text changes, even for large documents.
Open and compare text files in many popular formats without any upload.
Everything is processed on your device. No external connections are made during normal use.
Built with
Cross-platform UI framework powering the app on macOS, Android, and iOS.
Fast native code and strong typing for responsive diff performance.
Accurate line-by-line and character-level comparison using a Longest Common Subsequence algorithm.
Open files directly from your device and compare them without sending anything online.
Available on
Free, no account, no ads. Download the latest release and start comparing texts instantly.