PDF
Compare Two PDFs
Upload two PDFs and each page is rendered and compared pixel by pixel, with the differences marked in red.
Frequently asked questions
How are the differences shown?
The two files are compared pixel by pixel and a result PDF highlights everything that changed in red.
Is this tool really free?
Yes — completely free, with no sign-up, no ads and no artificial limits.
Are my files kept or shared?
No. Processing happens on our servers, then the file is deleted immediately and an automatic cleanup removes any residue. Nothing is stored or sold.