PDF tools
Merge PDF
Combine PDFs into one, in the order you choose. Runs on your device — nothing uploaded.
Drop or click to add PDFs
Up to 20 files. Combined into one PDF in the order shown.
Private by design — files stay in your browser.
Frequently asked
- How do I merge multiple PDFs into one?
- Drop the PDFs into Convertify, drag them into the order you want, tap Merge, then Download. Combines on your device — no signup, no upload.
- Are my PDFs uploaded to a server?
- No. Merging happens locally in your browser via mupdf-wasm. Your files never leave your device, so contracts and personal docs stay private.
- Does the order matter?
- Yes — pages are joined in the order shown. Use the up/down arrows to rearrange before merging.
- Will fonts, images, and links survive?
- Yes. We graft each source page with its full resource graph — fonts, images, and links come through cleanly. No re-rendering, no quality loss.
- How many PDFs can I merge?
- Up to 20 files, 200MB combined. For everyday merging that's well beyond what most people need.