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Runs in your browserReorder PDF pages
Sheet-fed scanners routinely produce documents back to front, and appendices have a habit of ending up before the thing they're appended to. Type the order you want and the pages are rebuilt that way. To reverse a twenty-page document entirely, enter 20-1.
How to use it
- Choose your PDF file.
- Type the new order, for example 3,1,2. Descending ranges work too, so 10-1 reverses the first ten pages.
- Decide whether pages you didn't mention are kept at the end or left out, then click Reorder.
Questions
Is my file uploaded anywhere?
No. This page contains the whole tool — the JavaScript that does the work runs inside your browser tab, on your own machine. There is no server to upload to. You can confirm it yourself: open your browser's developer tools, switch to the Network tab, and run the tool. You will not see your file go anywhere. You can also disconnect from the internet after the page loads and it will still work.
How do I reverse a whole document?
Enter the last page number, a dash, then 1. For a 12-page file that's 12-1. Descending ranges are read in the order written, so the pages come out reversed.
What happens to pages I don't list?
By default they're kept, appended after the pages you named, in their original order. Switch to "Leave them out" if you only want the pages you listed — that turns this into an extract-and-reorder in one pass.
Can I use the same page twice?
No — each page appears once. Listing a page again is ignored rather than duplicating it, which keeps the result predictable when you're typing a long order.