What This Tool Does

It extracts the text from two PDF files and shows them side by side with differences highlighted. Words that appear in the original but not in the updated version are marked in red. Words added in the updated version are marked in green.

The comparison is text-based. Layout changes and formatting differences are not detected, only content changes.

How to Use It

• Select the Original PDF on the left side.
• Select the Updated PDF on the right side.
• Click Compare PDFs.
• Review the highlighted differences in the side-by-side view.

How to Read the Results

Red highlighted words appear in the original but are absent from the updated version. They were either removed or changed. Green highlighted words appear in the updated version but were not in the original. They were added or are replacements for changed content.

Words with no highlight appear in both versions and are unchanged.

Common Uses

• Checking what changed between two versions of a contract
• Reviewing edits made to a report before finalizing
• Verifying that a document was not altered after signing
• Comparing two drafts to track revision history
• Checking if terms or clauses were added or removed in an updated agreement

Frequently Asked Questions

Does this compare layout or just text?

Text content only. Font changes, spacing adjustments, and moved elements are not detected.

Can I compare scanned PDFs?

Scanned PDFs contain images, not text. Use the OCR tool first to extract text from both scans, then compare the resulting text files.

Is there a page or file size limit?

No hard limit. Large documents process fine but take longer.

What if the two PDFs have different page counts?

All text from both documents is compared. The word-level comparison works regardless of page structure.