PDF Compare Tool
Compare two versions of a PDF document to highlight text and structural changes.
Drop your files here
or
PDF · Upload files up to 100 MB · 30 files max
Your files are secure and private. Everything is processed on your device.
How it works
- Upload both PDFsVersion A and Version B
- CompareParses line-by-line differences
- Review diffHighlighted changes
What this tool does
- Side-by-side diffing
- Text & page count comparison
- 100% local processing
Supported formats
Maximum file size: 100 MB.
Frequently Asked Questions
No. Comparison executes locally in WebAssembly.
Privacy and security
Your file is read directly from your device and processed in your browser. It is never uploaded to a server, so there is no copy for us to keep, share or lose. Closing the tab discards everything. If you want to check this yourself: open your browser’s developer tools, switch to the Network tab, and use the tool — you will see no request carrying your file or input leave the page.