Interleave PDF Pages
Merge two PDFs by alternating pages: page 1 from PDF A, page 1 from PDF B, page 2 from A, page 2 from B, and so on. Perfect for combining front/back scans. 100% private.
About Interleave PDF Pages
Merge two PDFs by alternating pages: page 1 from PDF A, page 1 from PDF B, page 2 from A, page 2 from B, and so on. Perfect for combining front/back scans. 100% private. Everything runs locally in your browser — your data never leaves your device.
How to use
- Enter your input in the tool above.
- Adjust any options to your preference.
- Use the Copy or Download buttons to save the result.
- Everything happens locally — your data never leaves your browser.
FAQ
Are my PDFs uploaded to a server?
No. Interleaving happens entirely in your browser using JavaScript — your files never leave your device, and it works offline.
What happens if the two PDFs have different page counts?
The tool alternates pages until one PDF runs out, then appends all remaining pages from the longer PDF at the end. So if PDF A has 5 pages and PDF B has 3, the output is: A1, B1, A2, B2, A3, B3, A4, A5.
What's a typical use case?
Combining front and back scans. If you scan the front pages of a document into one PDF and the back pages into another, interleaving them produces the correct reading order: front-1, back-1, front-2, back-2, etc.
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