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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.
