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Optimize files Compare PDF

Spot text changes between two PDFs

Upload two readable PDFs and PaperKit will build a side-by-side comparison report plus a short summary file.

Compare the left and right versions

The first file becomes the left-hand version in the HTML diff. The second file becomes the right-hand version.

Accepted files

Exactly 2 PDFs

Output

HTML diff and TXT summary

Best for

Readable text comparisons

Upload two readable PDFs

PaperKit extracts readable lines from each document and produces an HTML report plus a quick summary file.

Drop two PDFs here

Upload exactly two PDFs. The first file is shown on the left in the comparison report.

Use Compare PDF online in a steadier workflow

Upload two readable PDFs and PaperKit will build a side-by-side comparison report plus a short summary file.

Compare two PDFs with an HTML diff report that makes text changes easier to review. Common next steps include PDF to Word, Repair PDF, Translate PDF so the document can move cleanly through the rest of your stack.

Where it helps most

  • Accepts exactly two PDF files.
  • Creates an HTML side-by-side diff report.
  • Adds a text summary alongside the comparison output.

Why use Compare PDF online

  • Accepts exactly two PDF files.
  • Creates an HTML side-by-side diff report.
  • Adds a text summary alongside the comparison output.

How to use Compare PDF

Step 1

Upload two PDFs in left-to-right order.

Step 2

PaperKit extracts readable lines and builds the diff.

Step 3

Download the HTML report and summary file.

Compare PDF specs and limits

Accepted files
Exactly 2 PDFs
Output
HTML diff and TXT summary
Best for
Readable text comparisons

Compare PDF FAQ

Does it compare the visual layout pixel by pixel?

No. This build compares extracted readable text side by side.

Which file appears on the left?

The first uploaded file is treated as the left-hand version.

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