Merge PDFs
Combine multiple PDFs into a single document, in the order you choose.
Drop PDFs here or click to upload
Add as many files as you want. They'll be merged in the order shown.
Up to 10 MB · 20 pages
How to merge pdf files online
Merging combines several PDFs into a single file, keeping every page exactly as it was. It is the usual way to assemble scanned pages, chapters, or a set of invoices into one document before sending or archiving it.
- 1
Add your PDFs
Drop two or more PDF files onto the upload area, or click it to browse. You can add more files after the first selection.
- 2
Check the order
Files are merged top to bottom in the order listed. Remove any file with the × button and re-add it if you need a different order.
- 3
Merge and download
Click Merge. The combined PDF downloads immediately as merged.pdf.
Your files never leave your device
Unlike most online PDF tools, this one uploads nothing. Everything runs inside your browser, so your document is never transmitted, never stored on a server, and never seen by anyone but you. Once the page has loaded you can disconnect from the internet entirely and the tool still works.
Frequently asked questions
- Are my files uploaded anywhere?
- No. Every operation runs inside your browser. The file is read into memory on your own device, processed there, and offered back to you as a download. It is never sent to a server, never stored, and never seen by anyone else. You can disconnect from the internet after the page loads and the tool still works.
- How many PDFs can I merge at once?
- There is no fixed count. The practical limit is the combined size, which is 30 MB per operation on the free plan.
- Does merging reduce quality?
- The original page content is preserved exactly. This tool rewrites the document structure rather than re-rendering pages, so text stays selectable and images keep their original quality.
- Can I merge password-protected PDFs?
- Not directly. A password-protected PDF must be unlocked first — use the Unlock tool with the document’s password, then run this tool on the result.
Related tools
DinoPDF — every tool runs in your browser. Nothing is uploaded.