Compare PDF

Compare two PDFs for differences.

Select Files

Compare two PDFs for differences.

Add two PDF files | Each up to 50MB
Download Output
Compare PDF

How to Compare PDF in 4 Steps

Identify differences between two PDF documents.

1

Upload PDFs

Select two PDF files.

2

Auto Analysis

Compare content automatically.

3

Generate Report

Create comparison report.

4

Download

Save comparison results.

FAQ

Common questions about comparing PDFs.

The comparison highlights text differences, added/removed content, and visual changes between the two PDFs.

For best results, PDFs should have searchable text. Scanned PDFs can be compared after OCR processing.

Both input files must be PDF format. The output is a PDF report highlighting all differences.

Each PDF can be up to 50MB, for a total of 100MB.

About Comparing PDF Documents

What is PDF Comparison?

PDF comparison identifies differences between two versions of a document. Advanced algorithms detect text changes, formatting modifications, added or removed content, and image alterations, highlighting all differences visually.

Why Compare PDFs?

  • Version Control: Track document revisions
  • Legal Review: Verify contract changes
  • Quality Assurance: Check for unauthorized edits
  • Audit Trail: Document change history

Comparison Features

Detailed difference detection:

  • Text Changes: Added, deleted, or modified text
  • Visual Differences: Side-by-side comparison view
  • Format Changes: Font, color, and style differences
  • Image Comparison: Detect altered graphics

Best Use Cases

Essential for legal document review, contract verification, academic paper revisions, technical document updates, and compliance auditing.

Frequently Asked Questions

Our tool detects text changes, additions, deletions, formatting differences, and visual modifications. It highlights all differences with color coding for easy identification.

For best results, use PDFs with searchable text. Scanned documents should first be processed with OCR (Optical Character Recognition) for accurate text comparison.

The tool generates a detailed PDF report showing both documents side-by-side with differences highlighted. Added content is shown in green, removed content in red, and modifications in yellow.

Each PDF file can be up to 50MB, allowing you to compare documents totaling 100MB. This accommodates most business documents and reports.

Password-protected PDFs must first be unlocked using our Unlock PDF tool before comparison. This ensures we can access and analyze the content.

The comparison is highly accurate for text-based PDFs, detecting even subtle changes. For image-heavy or complex layouts, visual differences are highlighted but may require manual review.