PDF Tools
PDF Compare
Compare two PDFs with side-by-side, overlay, and difference views.
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About this tool
Load two PDFs locally, inspect matching page numbers, and switch between side-by-side, overlay, and red-difference views. Export the comparison pages as PNG images in a ZIP for review notes or visual QA.
Frequently asked questions
Does this compare the PDF text or the page image?
This is a visual comparison. Each page is rendered in the browser, then compared as pixels so layout, image, and text-position changes are visible.
What happens if one PDF has more pages?
The extra pages are compared against a blank page so missing or added pages are easy to spot.
Are my PDFs uploaded?
No. Rendering, comparison, and ZIP export happen locally in your browser.