Duplex Interleave
Help Center

The smartest way to reassemble your documents from single-sided scan batches.

When should I use 'Duplex Interleave'?

It's essential if you have a single-sided scanner . You scan the stack of front sides (odd pages) first, then the back sides (even pages). Upload both files here, and the tool will interweave them in a zig-zag pattern (1-2-3-4...) to create one complete double-sided document.

Is it safe to upload scanned personal IDs or contracts?

Yes, it is 100% secure. All Max-PDF processing occurs locally in your browser memory. Since no files are ever sent to a server, your sensitive scanned data remains on your device, completely safe from external leaks.

What if I scanned the back sides in reverse order?

No problem. Many scanners output back sides in reverse order. Just check the 'Reverse' option for the back-side file, and our engine will automatically flip the order to interleave them correctly between the odd pages.

What happens if the two files have different page counts?

The tool will interleave them as much as possible. If one file runs out of pages before the other, the remaining pages from the longer file will simply be appended to the end. For best results, ensure no pages were missed during the scan process.

Will the scan quality degrade after merging?

Not at all. Max-PDF utilizes Lossless Vector Cloning. We migrate original page objects directly without re-compressing images. Your text remains sharp, and your images keep their original resolution and clarity.

How much time does this save?

Manually arranging dozens of pages is tedious and prone to error. This tool precisely interweaves hundreds of pages in roughly one second. It eliminates manual sorting, saves time, and ensures a perfectly ordered final document every time.

Overcoming Hardware Limits

You don't need a high-end duplex scanner to be efficient. Our interleave engine automates complex page-reordering logic, giving you professional results with standard equipment.

Experience precision and security with our serverless PDF technology. Max-PDF is more than just a tool—it's your partner in digital productivity.