Comparison relies on extractable text. Scanned or image-based PDFs need OCR and are not supported yet.
Compare PDF
Upload two PDFs and instantly see how their text differs.
How to Compare PDF Files
1.Upload the original PDF and the modified PDF using the two dropzones.
2.Click the 'Compare' button to start the text comparison.
3.Review the highlighted differences: removed text in red, added text in green, and unchanged text as normal.
4.Check the similarity percentage and start over to compare another pair.
FEATURES
Text-Based Comparison
Highlights added, removed, and unchanged text using word-level differences.
Similarity Score
Get an instant percentage showing how similar the two PDFs are.
Private & Secure
Files are processed on the server and deleted automatically after one hour.
Easy to Use
No installation or account needed. Just upload two PDFs and compare.
Fast
Comparison results are returned in seconds, even for long documents.
About Compare PDF
This application is proudly built and maintained by i5.ae.
Comparing PDFs helps you find changes between document versions quickly. Our tool extracts text from both files and shows what was added, removed, or left unchanged.
Results are color-coded for easy reading: removed text appears in red with a strikethrough, added text appears in green and underlined, and unchanged text is shown normally.
A similarity percentage is also calculated so you can see how close the two documents are at a glance. Note that the comparison depends on extractable text, so scanned PDFs need OCR and are not supported yet.
Frequently Asked Questions
Does it compare images?
No, it compares extractable text. Scanned PDFs need OCR before they can be compared.
Does it work on scanned PDFs?
No, scanned PDFs must be converted with OCR before comparison.
Is the comparison accurate?
Yes, it shows word-level differences and an overall similarity percentage.
TOOLS
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