# Compare PDFs

> Spot changes between two versions with synced side-by-side viewing and a pixel difference overlay.

Compare two PDF versions free: synced side-by-side pages plus a pixel-level difference overlay that highlights exactly what changed. Private, in-browser.

- **Canonical:** https://www.ailovekit.com/pdf/compare/
- **Category:** PDF Tools
- **Processing:** Runs entirely in your browser. Files are never uploaded to AiLoveKit servers.

## Find Every Change Between Two Versions

A contract came back "unchanged"? Verify it. AiLoveKit's **PDF comparison tool** loads two versions and shows them in synced side-by-side view, or switches to a **pixel-diff overlay** where any changed pixel glows red. It's the fastest way to audit revisions of contracts, layouts, drawings, and reports - without sending either file anywhere.

## Two Comparison Modes

- **Side by side** - flip through both documents in lockstep.

- **Difference overlay** - per-page pixel diff makes even tiny edits obvious.

## Frequently Asked Questions

**How does the difference overlay work?**

Both pages are rendered at the same size and compared pixel by pixel; changed areas light up in red on the overlay.

**Can the PDFs have different page counts?**

Yes. Navigation covers both documents; pages missing on one side are shown as blank placeholders in diff mode.

**Are my documents uploaded for comparison?**

No - both files render locally in your browser, so confidential contracts can be diffed safely.

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Source: https://www.ailovekit.com/pdf/compare/
Part of AiLoveKit: https://www.ailovekit.com/
Machine-readable index: https://www.ailovekit.com/llms.txt