PDF Document Comparison & Diff Tool
Compare two PDF documents side-by-side to highlight differences. Instantly spot changed clauses in legal contracts or revisions in design proofs.
Catch Sneaky Contract Changes
When a client or lawyer sends back a 'revised' 50-page PDF contract, manually reading both versions to see what they changed is dangerous and exhausting. Our PDF Compare tool acts as a digital proofreader. You upload the Original and the Revised version, and the tool renders them side-by-side, generating a visual 'Diff' heatmap that highlights any added, deleted, or altered text in bright neon colors.
Why Use Our PDF Compare?
- Legal QA: Ensure no sneaky clauses were added to a contract.
- Design Proofing: Spot minute changes in architectural or graphic PDFs.
- Visual Overlay: Highlights differences using a subtraction algorithm.
- Maximum Privacy: Compare highly confidential NDAs securely offline.
How to Use the PDF Compare
Upload the Original (Old) PDF.
Upload the Revised (New) PDF.
Click 'Compare Documents'.
Scroll through the generated overlay to spot the highlighted changes.
Frequently Asked Questions
This tool performs a visual, pixel-based comparison (like a light table). This means it catches *everything*—including altered fonts, changed logos, or shifted margins, not just text changes.
If a page is inserted, all subsequent pages will be out of sync and will highlight entirely. The tool works best for catching line-item revisions on identical page structures.
All file processing is performed locally in your web browser. We do not upload, store, or view your data.