Compare PDF Online Free

Compare two PDFs — page count, file size, and metadata. Both files stay on your device.

Upload two PDFs to compare

Drop PDF A and PDF B into the upload areas, then click Compare.

Drop PDF A

Drop PDF B

Your files never leave your device — processed locally in your browser.

Compare PDFs in 3 Steps

Check basic differences between two documents locally.

  1. Step 1

    Upload PDF A & B

    Drop both files into the separate upload areas.

  2. Step 2

    Click Compare

    Page counts, file sizes, and metadata are compared in your browser.

  3. Step 3

    Review Report

    See differences in pages, title, author, and related document info.

Benefits of Comparing PDFs Online

Quickly check if two documents match — privately and free.

Metadata Comparison

Compare title, author, page count, and file size side by side.

Both Files Local

Neither PDF is uploaded — comparison runs in JavaScript.

Free Comparison

Compare unlimited PDF pairs at no cost.

Instant Report

Results appear in seconds on your device.

No Installation

Works in any modern browser.

No Signup

Start comparing immediately.

Honest Scope

Basic comparison — not pixel-level visual diff. Use desktop for advanced compare.

Desktop Compare

PDF Champ desktop offers detailed visual PDF comparison.

How to compare two PDF files

  1. Upload PDF A and PDF B — Drop both files into the upload areas.
  2. Click Compare — Page counts and metadata are compared in your browser.
  3. Review the report — See differences in pages, title, author, and related info.
  4. Download optional — Use other tools if you need to merge or edit based on results.

Frequently asked questions

Does this compare page content visually?

This is a basic comparison (pages and metadata). Pixel-level diff is not included.

Are both files uploaded?

No. Both PDFs are read locally in your browser.

Can I compare password-protected PDFs?

Unlock them first with the Unlock PDF tool if you know the password.

PDF Champ — Online & Desktop

Choose Your PDF Champ Experience

Free browser tools for everyday tasks, or download the full desktop suite for advanced PDF power on Windows and Mac.

Desktop · Windows

PDF Champ for Windows

Complete desktop PDF suite — merge, split, lock, unlock, convert, compress, rotate, crop, watermark & sign.

  • Windows 7+ (64-bit)
  • Batch processing & encryption
  • Commercial & personal use
  • Free trial available
Desktop · Mac

PDF Champ for Mac

Native macOS app with the same powerful PDF tools and a smooth, integrated desktop experience.

  • Designed for macOS
  • Merge, split, convert & secure
  • Full offline processing
  • Free trial available