Tools

Remove duplicate pages from PDF

A stack fed through the scanner twice, a document merged in a second time, a cover repeated at every chapter. Each page is compared with the ones before it - by its text where it has any, by its look where it doesn't - and the repeats are marked for removal, each badged with the page it repeats, for you to check and correct before anything is deleted. The first occurrence always stays.

Step-by-step guide with screenshots

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  • PDF files only
  • Up to 15 MB each
  • 2 files a run - unlimited with Pro

Frequently asked questions

How does it tell that two pages are the same?

By the text, where the page has any: two pages with the same text are the same page whatever they look like, and two pages with different text are different however alike they look - an invoice with one figure changed stays. Where there is no text - a scan - the pages are compared by their look, squeezed to a small grey thumbnail; the strictness sets how much difference (scanner noise, a slight skew, exposure) still counts as the same sheet. Blank pages are never matched; the Remove blank pages tool is for those.

Which copy is kept?

The first one. Every later repeat is marked, with a badge naming the page it repeats, so you can see the pair; click a mark to keep that page after all.

Do bookmarks and annotations survive?

Yes. The pages are removed in place - the rest of the document is untouched, so outlines, page labels, links and form fields stay as they were.

Is the PDF uploaded?

No. The pages are read and compared in your browser, and the file never leaves your device.

Can it find repeats across two files?

No - each file is compared with itself, since a repeat is something that happened inside one document. If you have the same pages in two files, merge them first and run this on the result.

A repeat has a page number stamped on it - will it be found?

Where there is text, no: the page numbers differ, so the text differs and the pages count as different, which is the right answer far more often than not. Mark such a page by hand - a click marks it for removal like any other, and your decision stays through a change of strictness.

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