Question 1

What types of differences does it detect?

Accepted Answer

Text additions and deletions, rephrased sentences, moved paragraphs, and structural differences. Layout-only changes (like font size) are noted separately.

Question 2

Does it work on scanned PDFs?

Accepted Answer

Yes — scanned PDFs are OCR'd first, then compared. Accuracy depends on scan quality.

Question 3

What does the similarity score mean?

Accepted Answer

100% means the documents are textually identical. Lower scores indicate more differences — useful for versioning or plagiarism checks.

Question 4

Can I compare a redlined Word document converted to PDF?

Accepted Answer

Yes — convert your Word file to PDF first using our Word to PDF tool, then compare.

Question 5

Is it free?

Accepted Answer

Yes — up to 10 comparisons per month on the free plan. Pro and above have higher limits.

AI Document Comparison

How It Works

Upload both PDFs

AI analyses the differences

Review the diff report

Frequently Asked Questions