Compare two PDFs
See every addition, deletion and change between two versions.
Processed on your device, nothing uploaded
In short
This tool compares two versions of a PDF, for example a contract before and after review, and shows what has changed in the text: additions, deletions and changes, highlighted on the pages. The comparison is word by word, even if the layout has shifted between the two versions. Browse the differences side by side, with synchronised scrolling, or as a list, and download a PDF report. Changes in formatting, images or layout are not detected, and a scanned document must go through OCR first, since it contains only images. For two versions of a Word document, the “Document” editor shows the tracked changes. Both files are read in your browser, without being uploaded.
How it works
- Drop the two versions of the document.
- Additions, deletions and changes are highlighted, page by page.
- Download a PDF report of the differences.
Frequently asked questions
What does the tool compare?
The text of the two documents, word by word, even if the layout has shifted between versions.
Can I compare two scans?
Make them searchable with OCR first: a scan contains only images.
Can I compare Word documents?
Yes, with the “Document” editor, which compares two versions of a .docx and shows the changes as tracked changes.
Are my files sent to a server?
No. Everything is processed in your browser, on your device: no file is sent anywhere, neither to ElniDocs nor to anyone else. You can check this by going offline once the page has loaded: the tool keeps working.
Is it free? Do I need an account?
It is free, with no sign-up, no adverts and no watermark added to your files. The only limit is your device's memory (up to 500 MB per file).