📄 PDF Everyday— Free Online PDF Tools

Compare PDF — Spot the Differences

See exactly what changed between two versions of a document — every difference is highlighted in red, page by page.

Use This Tool — Free ↗
✅ 100% FreeNo subscription, no hidden fees, no watermarks.
🔒 SecureFiles processed and deleted immediately. Never stored.
⚡ InstantResults in seconds. No waiting, no queue.
📱 Works EverywhereDesktop, tablet, and mobile browsers supported.

How it works

1

Upload the original PDF

Choose the first version of the document.

2

Upload the modified PDF

Choose the version you want to compare against it.

3

Download the highlighted result

Get a PDF where every changed area is marked in red, with added and removed pages flagged.

Why compare PDFs visually?

Spotting a single changed clause, price, or date between two versions of a contract by eye is slow and error-prone. A visual comparison surfaces every difference at a glance.

Because the comparison is done on the rendered pages, it catches changes to text, layout, images and formatting alike — not just the words.

Frequently asked questions

How are differences shown?

Each page of the second PDF is shown with the areas that differ from the first highlighted in red.

What if the PDFs have different page counts?

Extra pages are flagged as added or removed so you can see structural changes too.

Does it detect image and layout changes?

Yes — the comparison is visual, so it catches text, image and layout differences.

Is it free?

Yes — completely free, with no sign-up and no watermark.

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