Interleave PDF online

Combine two PDFs by alternating their pages.

100% FreeNo SignupNo WatermarkNo Daily LimitsClear Privacy

No artificial upload quota: processing happens on your device, so the practical limit is your browser and available memory.

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Add your PDF

Choose from your device or drag the files onto the upload surface.

  • Free
  • No signup
  • Processed on device

Choose PDF filesPDF · drag and drop also works

About this Interleave PDF workflow

What it does

Interleave two PDF files page by page for duplex scans, odd and even pages, or paired documents. Runs privately in your browser with no upload.

Processing model

This focused tool processes the selected document in your browser. The source file is not overwritten.

Good practice

Keep the original file and inspect the downloaded result before replacing an archival, signed, submitted or legally important copy.

How Interleave PDF works in FileCarpenter

Interleave two PDF files page by page for duplex scans, odd and even pages, or paired documents. Runs privately in your browser with no upload.

The focused PDF Tools workspace is designed for a single job at a time. It does not require an account and does not add a FileCarpenter watermark to the downloaded result.

Good to know

What order is used?

Page 1 from the first PDF, then page 1 from the second, then page 2 from each, and so on.

What if the files have different page counts?

Remaining pages from the longer file are appended in sequence.