Compare PDFs
Compare two PDF documents side by side. Detect differences in text content and visual layout — 100% private, no upload required.
1First PDF
Drop first PDF
Select the first file
2Second PDF
Drop second PDF
Select the second file
Frequently Asked Questions
What counts as a difference?
We compare both text content and pixel-level rendering of each page. Differences include: mismatched text on a page, extra or missing pages, visual layout changes, and pixel-level color variations exceeding a threshold.
How accurate is the comparison?
The comparison is highly accurate for digitally-created PDFs. It checks every page for both textual and pixel differences. For scanned documents, minor rendering variations may appear as differences even if the content is the same.
Are large PDFs supported?
Yes, but very large PDFs may take longer to compare as each page is rendered and analyzed pixel by pixel. Files up to 100 MB are supported.
Is my data private?
Absolutely. Both PDFs are processed entirely in your browser. No data is uploaded to any server. You can verify by disconnecting your internet after the page loads.