Doneio

Merge PDF Files
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Upload multiple PDFs and combine them into a single document. Reorder files before merging. No uploads — your files stay in your browser.

Before
contract.pdf (12 pages)
appendix-a.pdf (4 pages)
appendix-b.pdf (6 pages)
After
merged.pdf (22 pages)
All documents combined

What this does

When you need to submit, share, or archive multiple PDFs as one file, merging them manually is tedious. This tool lets you upload any number of PDF files, arrange them in the order you want, and combine them into a single document with one click.

The merge happens entirely in your browser — your files are never uploaded to a server. The original files remain untouched, and the output has no watermarks.

How to merge PDF files

  1. 1Upload two or more PDF files by dragging them in or clicking to browse
  2. 2Reorder the files using the up/down arrows if needed
  3. 3Click Merge and download the combined PDF

Why merge PDFs

  • Easier sharing send one file instead of multiple attachments
  • Better organization keep related documents together in a single file
  • Submission ready many forms and portals require a single combined PDF
  • Cleaner archives store one file instead of scattered individual PDFs

Frequently asked questions

How many PDFs can I merge?

There is no hard limit. You can merge as many files as your device can handle. The process runs entirely in your browser.

Can I change the order of files?

Yes. Use the up/down arrows next to each file to rearrange the merge order before combining.

Are my files uploaded to a server?

No. Everything runs in your browser. Your PDFs never leave your device.

Does merging affect the quality?

No. Pages are copied as-is. Text, images, and formatting are preserved exactly.

Is this free to use?

Yes. You can use it right away with no signup required.

The PDF Merger also cleans messy text and strips tracking parameters from URLs. Need to extract specific pages instead? Try the PDF Page Extractor.

Merge your PDF files now

No signup. No upload. Works instantly in your browser.