Free online diff patch viewer. Visualize unified diff patches with highlighted additions, deletions, and changes. Side-by-side and inline views. Pure frontend. | No Signup, Client-Side · No Server Uploads
Zero Dependencies·Works OfflinePaste a unified diff patch to visualize code changes.
Diff Patch Viewer
A free online tool to visualize unified diff patches. Highlights additions, deletions, and changes with inline and side-by-side views.
Key Features
- Unified diff parsing: Supports git diff and standard formats
- Syntax highlighting: Green for additions, red for deletions
- Dual view modes: Inline and side-by-side
- Change statistics: Shows addition/deletion counts
- Context control: Customizable context lines
Use Cases
Code review, patch preview, version comparison, changelog visualization.
FAQ
What is unified diff format?
Unified diff is the most common code diff format. It uses @@ to mark hunk positions, + for additions, - for deletions, and space for context lines.
What diff formats are supported?
Primarily unified diff format, the default output of git diff, svn diff, and other version control tools.
Side-by-side vs inline view?
Inline view shows additions and deletions consecutively, more compact; side-by-side shows old and new code in columns, more intuitive.
Is my data safe?
Everything runs locally: Diff Patch Content and View Mode are processed on your device, never sent to a server. Diff content is never uploaded to any server.
How large a diff can it handle?
The browser can handle diffs with thousands of lines, though very large files may render slowly.