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📄 PDF Tool

PDF Merge

Combine multiple PDF files into one document. Reorder files, merge instantly, and download — no uploads, completely private.

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Drop PDF files here
Select multiple files to merge them into one
Choose PDFs
Merging...
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100% Private

Your PDFs never leave your browser. Powered by the open-source pdf-lib library.

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Multiple Files

Add as many PDFs as you need. Reorder them before merging with up/down controls.

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All Content Preserved

Text, images, fonts, and formatting are all preserved from each source PDF.

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Instant Processing

Merging happens directly in your browser — no waiting for server uploads.

Frequently Asked Questions

Is my PDF uploaded to a server?▼
No. All PDF merging happens entirely in your browser using the open-source pdf-lib library. Your files never leave your device.
How many PDFs can I merge at once?▼
You can merge as many PDFs as you need. Browser memory is the only limit — for very large files, merging a few at a time is recommended.
Will the merged PDF retain all content?▼
Yes. The merged PDF contains all pages from all source PDFs in the order you specify. Text, images, and formatting are preserved.
Can I reorder files before merging?▼
Yes. Use the up and down arrows next to each file in the list to reorder them before clicking Merge.
Does merging work with password-protected PDFs?▼
No. Password-protected PDFs cannot be merged. You need to remove the password protection first before merging.

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🔄
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How to Merge PDF Files

  1. Upload two or more PDF files by dragging them in or clicking to browse.
  2. Reorder the files by dragging if needed — the final PDF will follow this order.
  3. Click Merge to combine them into a single PDF document.
  4. Download the merged file. All processing happens in your browser — your files are never uploaded to a server.

When You Need This

Good to Know

If the merged PDF is too large for email, run it through a PDF compressor afterward. Keep the original individual files as backups. Some government and legal forms require documents to be in a specific order — double-check the sequence before merging.