Compare Two PDF Documents
Compare two PDF documents side-by-side and highlight differences.
AZ2PDF Compare PDFs is a free, high-speed online utility designed to compare two pdf documents side-by-side and highlight differences. Operating securely in volatile RAM memory with automated 5-minute permanent file deletion, your documents remain private without requiring user accounts or software installation.
High-speed secure cloud storage for businesses & developers.
or drop files here
Supports PDF up to 50MBHigh-speed secure cloud storage for businesses & developers.
How it works
Select Two PDFs
Upload exactly 2 PDF documents that you want to inspect and compare.
Compare & Highlight
Analyzes both documents side-by-side to highlight additions, deletions, and modifications.
Download Comparison PDF
Download your comparison document with color-coded revision highlights.
Frequently asked questions
Is Compare PDFs on AZ2PDF completely free?
Yes, Compare PDFs is 100% free with unlimited usage, no registration required, no subscription fees, and zero watermarks.
Are my documents safe and private?
Absolutely. Files are processed securely in high-speed RAM and permanently purged after 5 minutes by our automated cleanup daemon.
Can I customize the numbering format, position, and starting page number in PDF?
Yes. You can select standard numerals (1, 2, 3),
What is the maximum file size limit?
You can process files up to 30MB instantly in high-speed RAM, with background asynchronous delivery available for larger documents.
High-speed secure cloud storage for businesses & developers.