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PDF Merger

Combines two or more PDF files into one contiguous document with up/down buttons to order the input list. Legal assistants compiling. Documents stay on your device — editing and conversion run locally in your browser.

Runs on pdf-lib

100% Local Browser Native

How to Use the PDF Merger

1. Upload files

Drop the batch. Processing runs on pdf-lib.

2. Configure merge

Set the merge options once — one configuration applies to the whole batch.

3. Download results

Files save straight to your device — downloads on local tools are unlimited.

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Frequently Asked Questions

How many PDFs can I merge?

There is no hard limit. You can merge 2, 5, 20, or more PDFs into a single document. The tool processes all files sequentially and outputs one combined PDF.

Can I reorder the pages?

Yes. Up/down buttons reorder whole files before merging — page-level mixing is not supported; each file's pages stay together in order.

Does it preserve formatting and fonts?

Yes. PDF formatting, fonts, images, and layout are preserved exactly as in the originals. The merge operation combines pages without re-encoding content.

When using PDF Merger, what is the maximum file size?

Files up to 125 MB each are accepted at intake (the shared PDF cap). Very large files may take longer to process depending on page count and your device's available memory.

Is my PDF data stored?

No. All merging happens locally in your browser using pdf-lib. No PDF files are uploaded to any server.

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Last updated October 2026