Several PDFs that should be one document? Add them here, put them in the right order, and download a single merged PDF. Page counts are shown for every file, and the whole merge happens in your browser — nothing is uploaded.
Applications, landlords and portals love asking for “one PDF”, while life hands you a statement here, an ID scan there and a certificate somewhere else. This merger fixes that in a minute: add every PDF, check each file's page count so nothing is missing, drag the files into order (or use the ↑ and ↓ buttons, which are easier on a phone), remove anything you added by mistake, and press Merge.
The merge is done on your device by the pdf-lib library — your documents are never sent to a server, so it is safe for bank statements, contracts, certificates and ID documents. The merged file keeps every page in exactly the order you set, at full quality.
How to use it
Add your PDFs — tap the box and pick several files at once, or drag and drop them in. Each file appears in the list with its name and page count.
Put them in order — drag a row to move it, or use the ↑ and ↓ buttons on the row.
Remove anything wrong — the ✕ on a row takes that file out of the list.
Merge and download — press “Merge PDFs & download” and save the single combined file, merged.pdf.
What you get
Page counts up front — every file shows how many pages it carries, plus a running total for the merged file.
Drag or button reorder — drag rows on a computer, tap ↑ and ↓ on a phone.
Full quality — pages are copied into the new PDF as they are, not re-rendered as pictures.
No uploads, no sign-up — pdf-lib runs entirely in your browser; your files never leave your device.
Frequently asked questions
How do I merge PDF files into one for free?
Add two or more PDF files to the merger above, drag them into the order you want (or use the move up and move down buttons), then press Merge PDFs and download the combined file. It runs in your browser with pdf-lib, so your files are never uploaded to a server.
Can I change the order of the files before merging?
Yes. Drag any row in the list to a new position, or use the ↑ and ↓ buttons on each row — the merged PDF follows the order shown in the list exactly.
Is there a limit to how many PDFs I can merge?
There is no sign-up or paywall limit. Very large files or very long documents can be slow on a phone, because everything runs on your device — if a merge struggles, try fewer or smaller files.
Are my PDF files uploaded anywhere?
No. The files are read and merged entirely in your browser with the pdf-lib library. Nothing leaves your device.