Tool · Compare
Spot every change between two PDFs.
Side-by-side visual diff. Built for contract review, redlines, and revision checking — entirely local.
Processed in your browser
Drop two PDFs to start comparing. Tip: pages compared visually at the same resolution — encrypted PDFs not supported.
Common questions
Frequently asked questions
What does Compare show me?
Two PDFs side by side with the differences highlighted, so a revised contract, filing or draft can be checked against the version you had before without reading both end to end.
Do both documents stay private?
Yes — both files are opened and compared in your browser. Neither is uploaded, which matters when the two versions are a negotiation's before and after.
Does Compare upload my PDF to a server?
No. The file is opened, processed and saved back by code running in this browser tab — there is no upload endpoint on our servers to send it to. You can watch the Network panel in your browser's developer tools while you work and confirm nothing carrying the document leaves the page.
Is Compare free?
Compare is part of PDFMacro Pro. You can read what it does and open the tool on any plan; running it requires a subscription.
Does it work offline?
Yes. Once the page has loaded, every tool keeps working with the network disconnected, because the processing never depended on a server round-trip. AI features that use an on-device model need one download the first time; after that they run offline too.
Compare runs in your browser. Try it now.
No account, no upload, no watermark on the way out. Open a file and see for yourself — the network panel is right there if you want to check.