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How to merge PDF files

Drop your PDFs into the box below, arrange the order, and click Merge. Everything runs in your browser - no upload.

Drop PDF here or click to browseYour files stay in your browser.

Step-by-step

  1. 1
    Add your PDFs. Drop PDF files into the box, or click to browse. Add as many as you like.
  2. 2
    Arrange the order. Drag files to reorder them, or remove any file you didn't mean to add.
  3. 3
    Merge and download. Click Merge. The combined PDF downloads to your device - nothing is uploaded.

Why merge PDFs in your browser?

Merging PDFs online usually means uploading them to a server owned by someone you don't know. If the PDFs contain contracts, invoices, or scans of ID documents, that's a real problem. This page does the merge in JavaScript, in your browser - the files never touch a server.

Does it work with 2, 5, or 20 PDFs?

Yes - add as many PDFs as you like. The only practical limit is your browser's available memory, which is comfortable for hundreds of megabytes on desktop and typically fine on modern phones.

Common ways people merge PDFs

Combining a signed cover letter with a scanned form. Stitching invoice pages saved from different vendors into one file. Turning a stack of scanned images (already PDF) into one deliverable.

Frequently asked

Is it safe to merge PDFs online here?
Yes. The merge runs entirely in your browser using JavaScript. Your files are never sent to a server.
Is there a file size limit?
There's no hard limit imposed by us. Your browser's memory is the practical ceiling - most desktops handle several hundred MB.
Does it work offline?
After the page loads once, the tool runs client-side. If your connection drops, merging still works.
Are my files uploaded anywhere?
No. We never upload, store, or log your PDF contents or file names.
Does it work on mobile?
Yes, on modern iOS and Android browsers. Very large files may hit mobile memory limits.
Do I need to sign in?
No. Every tool works without an account. Signing in is optional and only saves your preferences.

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Last updated 2026-09-15.