Skip to content
Rotina Diária

Interleave pages from two PDFs

Put separately scanned front and back pages in the right order: front 1, back 1, front 2…

or drag and drop here · Ctrl+V to paste

Check this if the last scanned back page corresponds to the first front page.

Processed on your device. Your files aren't uploaded to any server.

How to use: Interleave pages from two PDFs

  1. Select the 2 PDFs: first the fronts, then the backs (use the arrows to arrange them).
  2. Choose whether the backs were scanned in reverse order.
  3. Click Interleave PDFs and download the complete document.

About this tool

With a single-sided document feeder, scanning both sides creates two files. Interleave reconstructs the original document in seconds, without rearranging pages one by one.

Frequently asked questions

Why are the back pages reversed?

With scanners that don't support automatic duplex scanning, you scan the stack of fronts, turn it over, then scan the backs—which come out from last to first. Check this option to fix the order.

What if the PDFs have different numbers of pages?

Pages are interleaved as long as there are matching pairs, and any extra pages go at the end. We'll let you know if this happens.

Are my files uploaded to a server?

No. This tool runs entirely in your browser: your file is read and processed on your device, and not a single byte is sent over the internet. You can even disconnect from the internet after the page loads.

Is it really free? Is there a daily limit?

It's free with no daily limits. Processing happens on your device, so there's no per-use cost and no need to limit you.

Does it work on phones?

Yes. The site works in any modern browser on Android, iPhone, Windows, Mac, and Linux—no installation needed.

Related tools

View all — Related tools
Merge PDF Combine multiple PDF files into one, in any order you choose. Reverse PDF Pages Put the last page first: reverse the order of all pages at once. Organize PDF Reorder, rotate, and delete pages by dragging thumbnails. Add a blank page to a PDF Insert blank pages wherever you want, between every page, or to make the page count even. Split PDF Split a PDF into multiple files by page range or one page at a time. Compress PDF Reduce your PDF file size while keeping it easy to read. Sign PDF Draw, type, or upload your signature, then place it on the document. Edit PDF Edit existing text in your PDF by clicking it. Add or delete text, highlight, draw, insert shapes, images, signatures, links, and fields—or rotate, delete, and rearrange pages.