Alternate & mix
Interleave the pages of two or more PDFs, one from each in turn.
Free, no sign-up. It runs inside your browser: your files never leave your device.
Mix the pages of two or more PDFs, taking pages from each file in turn. It is the fix for double-sided scans, when the fronts and the backs come out as two separate files.
How to use Alternate & mix
- Drop two or more PDF files on the page.
- Put the files in order. Tick "Reverse" on a file to take its pages from last to first.
- Set "Pages from each file per turn" and what to do "When a file runs out".
- Check the page order shown under the options, then click "Mix pages".
Questions
How do I combine scanned fronts and backs?
Put the file with the fronts first and the backs second. Tick Reverse on the backs, then click Mix pages.
What if the files have a different number of pages?
Choose "Keep going" and the other files carry on until every page is used. Choose "Stop" and mixing ends with the shortest file; the extra pages are left out.
Can I take more than one page at a time from each file?
Yes. Set "Pages from each file per turn" to any number from 1 to 50.
Do my files leave my computer?
No. The pages are mixed on your device and nothing is uploaded.
More Page management tools
- Merge PDF: Combine several PDFs into one, in the order you choose.
- Compress PDF: Make a PDF smaller while it still looks the same.
- Split PDF: Split into single pages, fixed-size parts, or ranges you pick.
- Split by text: Start a new file at every page that contains a phrase.
- Split by bookmarks: Turn each chapter or bookmark into its own file.
- Split pages in half: Cut each page in two for book scans, or the PDF into two files.
- Split by size: Break a large PDF into parts under a size limit.
- Organize pages: Reorder, delete, duplicate and rotate pages.
- Rotate PDF: Rotate all pages or only the ones you pick.
- Flip PDF: Mirror pages horizontally or vertically.
- Pages per sheet: Put 2, 4, 6, 9 or 16 pages on one sheet.
- Crop & resize: Trim margins or resize pages to A4, Letter and more.
- PDF to ZIP: Bundle many PDFs into one ZIP archive.