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Compare PDF
Find differences between two PDFs
What is Compare PDF?
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.
Practical tips
Best for text changes
Comparison is based on the text layer, so it shows wording changes in contracts and drafts clearly.
Image changes may be missed
Edits inside images or scans are hard to detect; review those pages visually side by side.
Long files take longer
Documents with hundreds of pages can be compared, but processing time grows with page count.
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 file saved on the server?▼
No, all processing is local.
Last Updated: August 6, 2026
