Compare PDF Files

Upload two PDF documents to find differences. Changes are highlighted for easy identification.

Original Document

Drop PDF here or click to browse

document1.pdf

2.5 MB • 12 pages

Modified Document

Drop PDF here or click to browse

document2.pdf

2.5 MB • 12 pages

Comparison Settings

Sensitivity

Highlight Color

Compare Mode

Comparison Results

Page 1 of 1

0 differences found

Why Compare PDFs with The PDF Buddy?

Spot Every Change

Our advanced comparison engine highlights even the smallest differences between documents, including text, images, and formatting.

Lightning Fast

Compare large PDF documents in seconds. Our optimized algorithm processes files quickly without compromising accuracy.

100% Private

Your files never leave your browser. All comparison happens locally on your device - no uploads, no servers, no data leaks.

Version Control

Perfect for tracking revisions, comparing drafts, or verifying changes in contracts, reports, and legal documents.

How to Compare PDF Files

Upload Both PDFs

Select the original and modified PDF files you want to compare. Drag and drop or click to browse.

Adjust Settings

Choose sensitivity level, highlight color, and comparison mode to customize your results.

Review Differences

Click "Compare Documents" and wait a moment while we analyze your files. All differences are highlighted instantly.

Frequently Asked Questions

What types of differences can be detected?

Our tool detects text changes, image differences, formatting variations, and even minor pixel-level differences. The sensitivity setting lets you control how detailed the comparison should be.

Are my documents uploaded to your servers?

No! All processing happens entirely in your browser. Your files are never uploaded anywhere, ensuring complete privacy and security for sensitive documents.

What file size limits are there?

Each PDF can be up to 50MB. For larger files, we recommend compressing them first using our PDF Compressor tool.

Can I compare password-protected PDFs?

Currently, we don't support password-protected PDFs. Please remove passwords first using our Unlock PDF tool.

How accurate is the comparison?

Our algorithm provides pixel-perfect accuracy. The high sensitivity setting can detect even single-pixel differences between documents.

Can I export the comparison results?

Yes! Click the "Report" button to download a detailed PDF report highlighting all differences between your documents.