Organize PDF

Merge PDF

Combine multiple PDFs into one

Drag PDFs in any order and download a merged file. No size limit, no upload to a server.

Browse all toolsFiles processed in your browser — never uploaded

In your browser

Files never leave your device.

Instant

No signup, no upload queue.

Free forever

All tools, no paywall, no watermarks.

No tracking

We don't keep or analyze your files.

How to use Merge PDF

  1. Step 1

    Add your PDFs

    Drop two or more PDFs into the merge zone. There is no upper limit beyond what your browser can hold in memory.

  2. Step 2

    Drag to reorder

    Use the handle on each card to set the exact order of the pages in the final file.

  3. Step 3

    Merge locally

    The PDFs are stitched together in your browser — your files never leave your device.

  4. Step 4

    Download the merged PDF

    Save the single combined PDF with a branded, unique filename.

Frequently asked questions

Everything we get asked most often about Merge PDF.

How many PDFs can I merge at once?
There is no hard limit. The browser's memory is the only ceiling — most users merge dozens of files without issue.
Will form fields and signatures carry over?
Standard PDF forms survive the merge. Signature appearance is preserved, but cryptographic signature validity may break — that's a PDF spec limitation, not ours.
Are my files uploaded to a server?
No. Every conversion runs inside your browser using WebAssembly. Your files never leave your device — not even temporarily.
Is the output watermarked or limited?
No watermarks, no signup wall, no size cap beyond what your browser can handle. Every download is yours, plain and unbranded inside the file.
Does this work on mobile?
Yes. The tool works in any modern browser on iOS, Android, Windows, macOS, or Linux. Large files may run faster on a desktop, though.

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