Comparing two PDFs side by side reveals differences in page count, content, file size, and text — useful for version control, proofreading, and contract review. PDFStream loads both documents and displays them in a two-column view, with summary statistics showing page count comparison and file size difference. Navigate pages in sync or independently. Switch to text comparison mode to see extracted text side by side. Use cases: reviewing a revised contract against the original to find changes, comparing two versions of a report before finalizing, checking that a PDF generated from a new template matches the expected layout, or verifying that a translated document has the same page structure as the source.

How-to

1
Upload Two Files
Select two PDFs to compare.
2
Run Comparison
Click the compare button.
3
Check Results
Additions, deletions, and changes are highlighted in color.

Frequently Asked Questions

Does it compare only text or images too?▼

It compares based on the text layer. Changes to images are difficult to detect.

Can I compare PDFs with 100+ pages?▼

Yes, but processing time increases with the number of pages.

Is the PDF comparison feature free?▼

Yes, it is free.

Is the file saved on the server?▼

No, all processing is local.

Can I use it on mobile?▼

Yes.

Is the quality maintained?▼

Yes.

Is there a file size limit?▼

No.

How long does it take?▼

A few seconds.

Can I download the result multiple times?▼

Yes, in the same session.

What if an error occurs?▼

Retry if the file is corrupted.

Last updated: June 26, 2026

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