Deduplicate PDF
Find and remove duplicate pages.
How to use Deduplicate PDF
- 01
Drop in your PDF
Add the document you suspect contains repeated pages.
- 02
It finds identical pages
Each page is fingerprinted by its content, and pages that are exact copies of one another are grouped and flagged.
- 03
Review and download
Keep the first copy of each page, drop the rest, and download a de-duplicated PDF.
Tested and last verified on
About Deduplicate PDF
Scan your PDF for identical pages and remove duplicates. Uses content hashing to detect exact matches — perfect for cleaning up merged documents and scanned batches. Processed locally.
Clear out pages that are exact copies
Duplicate pages are easy to create and easy to miss. Merge two documents that happen to share a cover sheet and you get it twice; let a sheet-fed scanner double-feed a page and it lands in the file twice; append the same attachment to a bundle more than once and the repeats pile up. None of these add information, but they lengthen the document, bloat the file size, and make it look careless when someone flips through it. Deduplicating removes the redundant copies so the document contains each page only once.
Rather than relying on you to spot repeats by eye — which is nearly impossible in a long document — this tool fingerprints every page by its content and compares those fingerprints. Pages that are exact copies are grouped together so you can keep the first occurrence and drop the rest, leaving a leaner, cleaner PDF.
Exact matches only, and how it differs from blank-page removal
Deduplication is deliberately conservative: it acts on pages that are genuinely identical, not on pages that merely look alike. That distinction matters, because two invoices or two form pages can appear similar at a glance while differing in the details that count, and you would not want those collapsed into one. By matching on exact content, the tool removes true redundancy without risking real data. If your goal is instead to strip out empty pages — the blank backs of a duplex scan or spacer sheets — Remove Blank Pages is the tool designed for that, since blanks are not duplicates of one another in the strict sense.
As with the rest of the toolkit, fingerprinting and removal happen locally in your browser, so a confidential document is de-duplicated without ever being uploaded. There's no account or watermark, and your original file stays intact, so you can review what was flagged and decide exactly which copies to keep before saving the cleaned-up version.
Questions
Everything runs in your browser. How we keep files private
How does it decide two pages are duplicates?
It creates a content fingerprint (a hash) of each page and compares them, so pages with identical content are detected reliably regardless of where they appear in the document.
Will it remove pages that only look similar?
No. It targets exact duplicates, not pages that merely resemble each other. A page with even a small genuine difference is treated as unique and kept, which prevents it from deleting content you meant to keep.
Why does my PDF have duplicate pages at all?
Duplicates usually creep in from merges gone wrong, a scanner double-feeding a sheet, or the same document being appended more than once. They inflate the page count and file size without adding anything.
Is my file processed privately?
Yes — pages are fingerprinted and compared entirely in your browser, so nothing is uploaded.