Merge PDF files

Combine several PDFs into a single document, in the order you choose.

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All-in-one document tools.
Simple. Fast. Free.

Scan, chat with, and transform your documents. Convert, compress, merge, split and more — free to use.

Drag & drop your PDF here or PDF up to 50MB · or scan with your camera

Combining PDFs is the fix for documents that arrive in pieces — a signed page here, an appendix there, three scans from a phone. Doclium joins them into a single file in the order you choose, leaving the page content exactly as it was.

How to merge PDF files

  1. 1Upload the PDFs you want to combine, or drag them onto the page.
  2. 2Put them in the order you want them to appear.
  3. 3Merge, then download the single combined PDF.

Questions people ask

Is there a limit on how many PDFs I can merge?

You can merge as many as fit your storage allowance. Each file can be up to 50MB.

Does merging reduce quality?

No. Pages are copied across as they are, so text stays selectable and images keep their original resolution.

Can I change the page order?

Yes. The order you select the documents in becomes the order of the merged file.

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Everything you can do, in one place

Free to use No account, no signup, no payment.
Encrypted in transit Your library is private to your device. Privacy policy.
Answers you can check Every AI answer cites the page it came from.
Works everywhere Install it as an app on phone or desktop.

The PDF toolkit that reads your documents too

Doclium is a free web app for working with PDFs: merge, split, compress, rotate, protect and convert them in your browser, with no install and no signup to start. Where most PDF tools stop at the file, Doclium also reads it — ask a question and get an answer that cites the page it came from, so you can check it.

Chat with a PDF, summarise a long report, or translate one into another language. Clean documents up with OCR, redaction, watermarks, headers and footers, page numbers and A4 or Letter resizing. Every change can be undone, and every export is previewed before it downloads.

Private by default Your library is yours alone. Documents are scoped to your account or device and are never readable by another user.
HTTPS everywhere All traffic is encrypted in transit with TLS. Your files are not used to train AI models.
Answers with citations The assistant quotes the passage and page behind each answer, so nothing has to be taken on trust.
Free to use The tools are free, with no watermark added to your output and no account needed to begin.

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