What differences are detected?

Page count differences and page-dimension changes per page, with an overall similarity percentage. It is ideal for a quick structural check between document versions.

Do the files need the same page count?

No. Files with different page counts can still be compared — added or removed pages are flagged as changed.

Does it compare text word-by-word?

No. This tool compares document structure (page count and dimensions), not word-level text diffs. For text comparison, extract text from both PDFs first and diff the results.

Is comparison private?

Yes. Both files are analysed locally in your browser and never uploaded.

What differences are detected?

Page count differences and page-dimension changes per page, with an overall similarity percentage. It is ideal for a quick structural check between document versions.

Do the files need the same page count?

No. Files with different page counts can still be compared — added or removed pages are flagged as changed.

Does it compare text word-by-word?

No. This tool compares document structure (page count and dimensions), not word-level text diffs. For text comparison, extract text from both PDFs first and diff the results.

Is comparison private?

Yes. Both files are analysed locally in your browser and never uploaded.

Compare PDF

Analyse two PDFs for structural differences — page count, dimensions, and layout.

Drop first PDF (original)Drop second PDF (revised)

How to use Compare PDF

Done in under a minute — right in your browser.

1
Open the Compare PDF tool
Go to yumpdf.com/compare-pdf in any browser.
2
Upload both versions
Drop in the original and the revised PDF.
3
Run the comparison
Click Compare to analyse both files.
4
Review the differences
Inspect highlighted changes side by side.

Frequently asked questions

Open the Compare PDF tool, drop in the original and the revised file, then click Compare. You get a similarity score plus a page-by-page breakdown of page count and page-size differences.