Merge PDF files — free, in the order you choose, nothing uploaded
Combine several PDF documents into one file. Add your PDFs, arrange them in the order you want, and merge: pages are copied exactly as they are, with no recompression and no quality loss — and your documents never leave your device.
Good to know
- Price
- Free — no premium tier, no watermark
- Account
- None — no sign-up, nothing to install
- Your files
- Processed on your device only — never uploaded
- Multiple files
- Yes — convert as many as you want at once
- Formats
- PDF → PDF
How it works
Drop your PDF files
Drag in every PDF you want to combine — contracts, forms, scans, invoices. Add as many as you need.
Check the order
Files are merged from first to last, in the order shown. Remove any file you added by mistake before merging.
Download the merged PDF
One combined document, with every page copied exactly as it was. Save it and you are done.
Why use this tool
- Lossless merge: pages are copied, never recompressed or degraded
- Your documents never leave your device — safe for contracts and personal files
- No page limit and no file-count limit for the free tool
- No account, no watermark added to your documents
About the PDF format
PDF is the standard format for documents that must look the same everywhere: contracts, tax forms, invoices, scanned paperwork. In real life they rarely arrive as one file — a signed page here, an annex there, a scan from the office printer. Merging simply places the pages of several PDFs one after another into a single document, in the order you decide.
About the PDF format
The result is a single standard PDF containing every page of the source files, copied exactly — text, images, and layout are preserved, and nothing is recompressed. One honest limit: if a source PDF contains interactive form fields, those fields may lose their editability in the merged file (the filled-in values stay visible). Print-ready content is never affected.
Frequently asked questions
Are my documents uploaded to a server?
Never. The merge runs in your browser with pdf-lib. Your PDFs are read and combined on your own device; we cannot see them, store them, or share them.
Does merging reduce the quality of my PDFs?
No. Pages are copied into the new document exactly as they are, without recompression — the merged file looks identical to the originals, page for page.
How many PDFs can I merge at once?
As many as your device can handle comfortably. There is no built-in file or page limit; extremely large sets (hundreds of MB in total) can strain a phone's browser memory, in which case merging in two steps works around it.
What happens to fillable form fields?
The pages and everything visible on them are preserved. However, interactive form fields from the source files may become fixed (no longer fillable) after merging. If you need a form to stay fillable, fill it in first, then merge.