PDF Merger

How to use

1. Choose two or more PDF files, or drag and drop them onto the box.
2. Reorder the files with the up/down arrows if needed.
3. Click "Merge into one PDF" - the combined file downloads automatically.

Use cases

1. Use case: Combine scanned pages Merge several single-page scans into one PDF document for submission or archiving.

2. Use case: Assemble reports Join a cover page, table of contents and body into a single PDF before sending it to a client.

Practical tips

Order is set by the list, not by filenames — drag entries into the order you want before merging, since 'page 2' of the wrong file is still page 2. Merging runs in your browser, so very large files are limited by device memory rather than an upload cap. Password-protected PDFs must be unlocked before they can be merged. Output order follows input order; rename files first if the alphabetical default is wrong. Like every tool on this site, the Pdf Merge runs entirely in your browser: the data you enter never leaves your device, nothing is uploaded to a server, and the tool keeps working if your connection drops.

Common mistakes

Merged output inherits everything from its inputs, order included:

• Merging in filename order when the real order should follow content — drag the list into the order you want first.
• Carrying over a cover page or blank page from a scan and shipping it inside the merged file.
• Attempting to merge password-protected PDFs without unlocking them first.
• Assuming page sizes are consistent: mixing A4 and Letter pages produces a document that prints with unexpected margins.

Why use this tool

Browser merging beats desktop software when:

• The task is occasional — no install, no license, open a tab and done.
• The documents are sensitive: processing is local, so nothing ever uploads.
• You are on a borrowed or locked-down machine with no PDF software.
• The files are small to medium — local memory handles typical document sets comfortably.

Frequently asked questions