Find the difference
in everything.
Compare text, code files, JSON, XML, CSV, images, PDFs and URLs — with word-level highlighting, three diff engines (Myers, Patience, GNU), structured tree views, 3-way merge, conflict resolution, share links, and a public API.
Text
Paste or type — instant diff with word-level highlights, 4 engines.
Files
Upload two files: code with syntax highlighting, JSON/XML/CSV structured.
Image
Pixel-perfect image comparison: red overlay, slider, blend.
JSON
Structural diff with stable paths — see exactly which keys changed.
XML
Element & attribute awareness — children matched by name.
CSV
Row-aware table diff with per-cell change detection.
Page-by-page text comparison of two PDFs.
URL
Fetch two pages and compare — text, JSON, XML, CSV, images.
Merge
3-way merge: compare Base vs Ours vs Theirs, detect conflicts.
Conflicts
Paste a file with conflict markers — auto-detect, one-click resolve.
Folders
Compare two zip archives or file lists — see added/removed/changed.
🔒 Private & protected
Diffs are computed in memory and never logged. Saved diffs can expire and be password-protected.
⚡ Live mode
Type on the Text tool and watch the diff update instantly, in your browser — no round-trips.
🚀 Public API
A RESTful v1 API with API keys, rate limits and the same engines — integrate diffs anywhere.
🔀 3-Way Merge
Compare Base, Ours, and Theirs — detect conflicts and resolve with one click. Perfect for git workflows.
⌨️ Keyboard Shortcuts
Ctrl+F to search, arrows to navigate changes, 1/2/3 to switch views. Built for power users.
📄 PDF & JSON Export
Download professional reports as PDF, HTML, .diff, or JSON. Share with anyone.
Why developers choose DiffBolt
| Feature | DiffBolt | Others |
|---|---|---|
| 3-Way Merge | ✓ | — |
| Merge Conflict Resolver | ✓ | — |
| Folder / Zip Comparison | ✓ | — |
| 4 Diff Engines | ✓ | 2 |
| Character-Level Refinement | ✓ | — |
| Search Within Diff | ✓ | — |
| Keyboard Shortcuts | ✓ | Limited |
| PDF Report Export | ✓ | Paid |
| REST API with API Keys | ✓ | Paid |
| Dark Mode | ✓ | ✓ |