Diff Checker
Compare two texts side by side, review changes, and copy a unified patch.
What you can do
- Edit Left (before) and Right (after) with live diff
- Side by side or read-only Unified view
- Jump between hunks in the Changes panel
- Copy Patch for reviews or
git apply - Open files into either side
Sample JSON loads on first open.
Compare modes
| Mode | Best for |
|---|---|
| Side by side | Editing while comparing; green/red line highlights |
| Unified | Git-style single view (read-only) |
Ignore options
| Option | Effect |
|---|---|
| Whitespace | Ignore trailing spaces per line |
| Case | Case-insensitive line compare |
Changes panel
Summary: added, modified, deleted, unchanged counts.
Filter hunks by text. Click a hunk to scroll editors to that region.
Copy Patch exports standard unified diff with context.
Tips
API or config diffs: Paste old left, new right; ignore whitespace if only formatting changed.
PR review: Walk hunks in order, copy patch into comments.
Large files: Split into smaller chunks if either side exceeds ~50k lines.
Keep in mind
Line-based comparison — JSON key reordering shows as changes. Work stays in the tab until you copy it elsewhere.
App shortcuts
| Action | Shortcut |
|---|---|
| Search tools | ⌘ K |
| Close current tab | ⌘⌥E (Ctrl+Alt+E on Windows) |
Note: ⌘W closes the browser tab. ⌘⇧E focuses the Explorer in Cursor/VS Code. Use ⌘⌥E (Ctrl+Alt+E) to close the current tool tab (click inside the app first so the IDE does not steal the shortcut).