Compare two PDFs
The older and the newer version side by side: every change is marked and listed. Both files stay in your browser.
Drop your file here or choose one
Two PDF files · in your browser
Our Terms apply.
How it works
- Drop or choose the older and the newer version. Both files stay on your device.
- Go through the changes: changed words in yellow, inserted in green, removed in red, and jump from one to the next in the list.
- Download the report as a PDF – or go straight on to annotate or sign.
Frequently asked questions
Are my files uploaded?
No. Both versions are compared in your browser and never leave your device. Your progress stays in this browser only and is removed after 7 days, at once with “Start over”.
How are changes marked?
Pages with text are compared word by word. Changed words are marked yellow, inserted words green and removed words red, on both sides.
What if a page was added or removed?
Pages are paired first. An inserted or removed page is therefore reported as such, instead of making every following page look different.
Does it work with scans?
Yes. Pages without text, such as scans or pictures, are compared as pictures: regions that differ are marked blue, and small noise from scanning is ignored. For a word-by-word comparison, make the scans searchable with “OCR PDF” first.
What is in the report?
First the list of changes with their pages, then the newer version with the changes marked. You can download it or, with “Continue with”, annotate or sign it.
What does the comparison not detect?
It compares what is in the files. Formatting changes alone, such as font or color, are not reported. Text moved to another place shows as removed and inserted.
What does it cost?
Nothing. Tools that run in your browser are always free and need no account.
Related tools
Why Docuvoza
No account, no subscription, no document storage. Most tools run on your device; the rest in the EU, deleted after 60 minutes. Your working copy stays in this browser for up to 7 days, or until you choose Start over. And when someone has to sign: soon with Signovoza.
How the handover works →What “Compare PDF” is for
Which version was actually signed? What changed between the quote and the contract? Did someone edit your document more than agreed? Drop in the older and the newer version and you see every change without reading both documents line by line.
Word by word, page by page
Pages with text are compared word by word. Changed words are marked yellow, inserted words green and removed words red, on both sides. Pages are paired first: an inserted or removed page is reported as such, and the pages after it do not all look different. Pages without text, such as scans or pictures, are compared as pictures; regions that differ are marked blue, and small noise from scanning is ignored. To compare scans word by word, make them searchable with “OCR PDF” first.
Side by side or one at a time
On a wide screen both versions are side by side. A list of all changes, such as “Page 4 · changed: 2,400 → 2,800”, jumps to each one. On a phone a switch shows one version at a time.
The report as a PDF
The result is a PDF report: first the list of changes with their pages, then the newer version with the changes marked. Download it, or go on with “Continue with” to “Annotate PDF” or “Sign PDF”. After “Edit PDF” the comparison is offered as the next step and compares with the version before the edit, with no new upload.
Private and free
Both files stay in your browser, nothing is uploaded, and you need no account. Your progress stays in this browser for 7 days or until you choose “Start over”. The comparison shows what is in the files: formatting changes alone, such as font or color, are not reported, and moved text shows as removed and inserted.