Merge PDF
Combine several PDFs into one file, in order — all locally in your browser.
Select two or more PDFs to combine them in order.
How to use
- Select two or more PDF files.
- Click Merge PDFs.
- The combined PDF downloads automatically.
How the Merge PDF works
Combines several PDF files into one document, in the order you arrange them — entirely in your browser.
Each source file is parsed, its pages are copied into a new document in sequence, and the result is serialized back out as a single PDF.
Worked example
Three 4-page PDFs merge into one 12-page document preserving the original page order.
Things worth knowing
- Nothing is uploaded. Merging happens locally, which matters because PDFs being combined are usually contracts, invoices or records.
- Password-protected PDFs must be unlocked before merging.
- Form fields and digital signatures may not survive a merge — signatures in particular are invalidated by definition, since the document has changed.
Frequently asked questions
Are my PDFs uploaded anywhere?
No — merging happens in your browser, so nothing is sent to a server.
Is there a file limit or watermark?
No watermark and no artificial limit; very large files are bounded only by your device's memory.
Does merging reduce quality?
No. Pages are copied as-is, not re-rendered, so there is no loss.