Reorder PDF Pages

What this tool does

Reorder PDF Pages shows every page as a thumbnail so you can drag pages into the right sequence, move them with the keyboard, or type an order such as 3, 1-2, 5-. One click reverses the document or fixes a double-sided scan, and the new PDF is saved on your device.

Pages end up in the wrong order more often than you would think. A sheet goes through the scanner upside down in the stack, an appendix is exported before the report it belongs to, or a single-sided scanner produces all the front sides followed by all the back sides in reverse. Re-scanning or re-exporting wastes time when the pages themselves are fine.

This tool renders a small preview of each page with pdf.js, lets you put them in the order you want, and then uses pdf-lib to copy the pages into a new document in that sequence. Page content is copied, not re-rendered, so text stays searchable and images keep their original quality. Everything runs in your browser tab.

How to use Reorder PDF Pages

1. Drop a PDF onto the upload area. Thumbnails load as you scroll, so long documents open quickly.
2. Drag a page to its new position, or focus a page and press Alt with an arrow key. The small arrow buttons under each page do the same on touch screens.
3. For bigger changes, type an order in Type a new order, for example 5, 1-4, 6-, and press Apply order.
4. Use Reverse order to flip the whole document, or Collate duplex scan to interleave fronts and backs.
5. Press Reset at any time to return to the original sequence.
6. Press Save reordered PDF and download the result.

Tips for better results

• In the typed order, pages you do not mention are appended at the end in their current order, so moving page 9 to the front only needs 9.
• Collate duplex scan expects the file to contain all fronts first (1, 3, 5) and then all backs as they come out of a flipped stack (6, 4, 2). It produces 1, 2, 3, 4, 5, 6.
• Each tile label shows both its new position and its original page number, which makes it easy to check a long reorder before saving.
• If you also need to remove or rotate pages, reorder first, then use the dedicated delete or rotate tool on the result.

Common use cases

• Fixing a contract where the signature page was scanned first.
• Assembling a double-sided paper document scanned on a single-sided feeder.
• Moving an executive summary or cover letter to the front of a report.
• Reversing a PDF that a scanner produced back to front.

Common mistakes to avoid

• Typing the printed page numbers from the footer instead of the position in the file. The tool always counts from the first page of the PDF.
• Running Collate duplex scan on a file that was not scanned in two passes, which scrambles a correctly ordered document. Press Reset to undo.
• Expecting bookmarks to follow the pages. Bookmarks and form fields are not carried into the reordered copy.