Merge PDF
How to merge PDFs
- 1Select multiple PDF files from your device.
- 2Arrange them in the order you want.
- 3Click Merge PDFs to download a single combined PDF.
Why choose Ultraconvert?
Fast, private, and lossless PDF merging
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100% browser-based
All PDF processing happens locally in your browser. Files never leave your device.
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Lossless merge
Pages are copied exactly as-is with no quality loss.
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Private & secure
No uploads, no tracking, no data storage.
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Multiple PDFs
Merge as many PDFs as you need in one go.
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Original order preserved
Pages appear in the same order you select.
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Fast & simple
Instant merging even for large documents.
Frequently asked questions
Everything you need to know about merging PDFs
Are my PDFs uploaded to your server?
No. All PDF merging happens locally in your browser. Your files never leave your device.
Will the PDF quality change?
No. PDF pages are merged without any modification or compression.
Is there a limit on the number of PDFs?
There is no fixed limit, but very large files may take longer to process.
Can I merge PDFs with different page sizes?
Yes. Page sizes and orientations are preserved exactly.
Is this tool free?
Yes. Completely free with no watermarks.