Automatically find and remove pages that repeat in your PDF.
or drop a PDF here
A duplicate page is a page that repeats elsewhere in the same document — the same content appearing twice because a document was scanned twice, a page was accidentally inserted more than once, or two files with overlapping pages were merged together.
Duplicate pages inflate the page count, make a document harder to navigate, and can be confusing or unprofessional when the document is shared or printed.
This is a browser-based tool that compares every page of a PDF against every other page and flags the ones that match. Upload a PDF, review the matching groups in a grid, and the first page in each group is kept by default while the rest are marked for removal.
A match threshold slider controls how strict the comparison is, and any page can be toggled by hand — the automatic scan is a starting point, not the final word. Everything runs locally using pdf-lib and pdf.js, so your file is never uploaded to a server.
Click to select or drag and drop a PDF file onto the upload area.
Every page is compared against every other page, and matching groups are marked automatically.
Click any page thumbnail to keep or remove it, and fine-tune the match threshold if pages are being over- or under-matched.
Click "Remove Duplicate Pages" to build the cleaned-up document, then download it.
Two pages with a similar layout (e.g. a form template used more than once with different data) can be flagged as duplicates — raise the match threshold percentage so only closer matches are grouped, or manually uncheck the page you want to keep.
A page re-scanned at a different angle, brightness, or resolution may not match closely enough — lower the match threshold, or remove the page manually.
The first page in a group is kept by default, which may not always be the one you want — click the thumbnail marked "ORIGINAL" to remove it, and click the "DUPLICATE" you'd rather keep instead.
If every page ends up marked for removal, there's nothing left to save — keep at least one page.
Password-protected PDFs can't be scanned directly. Remove the password first using the Unlock PDF tool, then run the duplicate scan.
A document where the same page was scanned twice by mistake.
Input
contract.pdf, 10 pages, page 7 matches page 3
Output
contract-no-duplicates.pdf, 9 pages
Two files merged together that shared an overlapping cover page.
Input
combined.pdf, 15 pages, page 8 matches page 1
Output
combined-no-duplicates.pdf, 14 pages
No. Scanning and removing pages happens entirely in your browser using pdf-lib and pdf.js. Your PDF file is never sent to a server.
Each page is rendered to a small grayscale image and reduced to a compact fingerprint. Pages whose fingerprints match closely enough, based on your chosen threshold, are grouped as duplicates.
No automatic comparison is perfect — pages with similar layouts but different content, or true duplicates rendered with slight differences, can be over- or under-matched. Always review the highlighted groups before downloading.
The first occurrence in the document is kept by default. You can override this by clicking any page thumbnail to change which ones are kept or removed.
Not directly — use the Unlock PDF tool to remove the password first, then run the duplicate scan on the unlocked file.
No. Kept pages are copied unchanged into the new document — only the duplicate pages are left out.