NexUtils
PDF Tools

Compare PDFs

Visually compare two PDF documents side-by-side.

Document 1

Upload PDF

Drag & drop or

Document 2

Upload PDF

Drag & drop or

About This Tool

Visually identify every single difference between two PDF versions with pixel-perfect accuracy. The Compare PDF tool is a critical utility for legal professionals reviewing contract iterations, designers identifying proof changes, and developers verifying generated reports. Instead of manually scanning pages and risking costly human errors, our tool automates the process. It allows you to view documents Side-by-Side with synchronized scrolling, or use the Overlay mode to stack pages on top of each other, highlighting changes in contrasting colors (e.g., deletions in red, additions in green). It detects added text, removed images, shifted layouts, and even subtle font changes. The comparison takes place entirely in your browser memory, ensuring that your sensitive versions never leave your device. This tool processes files locally in your browser whenever possible, ensuring your sensitive documents remain private and secure. Unlike many online PDF tools that upload your files to remote servers, we prioritize your data privacy. The tool handles large files efficiently and maintains the original quality of your PDFs without compression or degradation. Whether you're a student compiling research, a professional preparing reports, or a business managing contracts, this tool streamlines your PDF workflow. It eliminates the need for expensive Adobe Acrobat subscriptions while providing professional-grade results instantly.

How to Use This Tool

1

Upload Original

Select the first version (the 'Reference' or 'Old' file).

2

Upload Modified

Select the second version (the 'New' file).

3

Compare

The tool processes both files and aligns the pages.

4

Review Differences

Scroll through to see highlighted changes. Toggle between Side-by-Side or Overlay view.

Key Features

  • Visual Diffing: instantly see what changed with color-coded highlights.
  • Synchronized Scrolling: Lock the two documents together so you always compare the same section.
  • Overlay Mode: Stack pages to catch subtle position shifts or resize errors.
  • Text & Visuals: Works on both selectable text and scanned image content.
  • Privacy First: Comparing confidential contracts? Our local processing guarantees data secrecy.
  • Time Saving: Reduces hours of manual proofreading to minutes of verification.

Frequently Asked Questions

Does it highlight text changes?

Yes, it visually highlights areas where the content differs. For exact text-diffing, it relies on visual appearance.

What if the pages are different lengths?

The tool compares page-by-page (Page 1 vs Page 1). If page counts differ, extra pages are shown as unmatched.

Does it work on scanned files?

Absolutely. Since it compares pixels, it is one of the best ways to check if a signed scan matches the digital original.