Doneio

Merge PDF

Submitting documents that need to be one file? Merge them here.

Files

Upload PDF filesDrag and drop or click to browse
Your files never leave your browser

Output

Ready to merge.Upload PDF files to combine them into one document.
Processed entirely in your browser

When to use this

  • When submission requires a single PDF but your documents are separate files
  • When combining monthly reports into one quarterly document
  • When merging a contract with its appendices before signing
  • When joining multiple invoices for batch submission

What this tool does

Upload multiple PDF files and combine them into a single document. You can reorder files before merging. The original files are never modified. Everything runs in your browser — your PDFs are never uploaded to a server.

How to use

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

Common use cases

Merge contract appendices

Combine a main contract with its appendices and exhibits into one file for signing.

Combine monthly reports

Merge individual monthly reports into a single quarterly or annual document.

Join invoices

Combine multiple invoices into one PDF for batch submission or record-keeping.

Merge presentation materials

Combine separate PDF slides or handouts into one file for distribution.

Need to extract specific pages from a PDF? Try the PDF Page Extractor.

Why use Doneio

  • No signup required — just open and upload
  • Your files never leave your browser — nothing is uploaded
  • Drag-and-drop reordering before merging
  • No watermarks on the output
  • Unlimited merges with no file count limit

Frequently asked questions

Are my files uploaded to a server?

No. The entire merge process runs in your browser. Your PDFs never leave your device.

Is there a file size or count limit?

There is no hard limit. Performance depends on your device and the total size of the files.

Can I reorder the files?

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

Does it modify the original files?

No. The original files are untouched. A new combined PDF is created from them.

Will the page numbers be preserved?

Yes. Page content, internal links, and bookmarks within each source PDF are preserved in the merged file.

Is this free to use?

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