Write the order you want
Scanned documents often come out of order, especially double-sided ones scanned as two stacks. Type the new page order and press Reorder pages:
3, 1, 2puts page 3 first, then 1, then 2.- Ranges work too:
5-8, 1-4swaps two halves;10-1reverses a ten-page document. - A page can appear twice (
1, 1, 2duplicates page 1), and pages you don't list are left out.
The new PDF contains exactly the pages you typed, in that order. Pages are copied as they are, so text stays selectable and quality doesn't change. To turn sideways pages, use Rotate PDF.
Nothing is uploaded
Your browser rebuilds the PDF on your device, so there is no account and no limit.
How this works
The PDF is opened in a Web Worker with pdf-lib. Your order is read as a list of pages and ranges (a range written high-to-low runs backwards) and checked against the document. A new PDF is then built by copying each listed page, with its fonts and images, in exactly that order; nothing is redrawn or compressed again.
Frequently asked
How do I reverse all pages?
Type the last page, a hyphen and 1. For a 12-page file, 12-1 gives pages 12 down to 1.
What if I leave a page out of the list?
It isn't included in the new PDF. List every page you want to keep.
Is the PDF uploaded?
No. The pages are reordered by your browser on this device.
Can I duplicate a page?
Yes. Write it twice, for example 1, 2, 2, 3.
Sources
- ISO 32000-2:2020 — Document management — Portable document format — Part 2: PDF 2.0
- @cantoo/pdf-lib — create and modify PDF documents in any JavaScript environment
- Wikipedia — PDF
Reviewed Oct 19, 2026 · test vectors fixtures/tools/pdf/organize-pdf/