MostlyPDF

Merge PDF

Drop your PDFs in the order you want, then download a single combined file — free, no sign-up, no watermark.

Open Merge PDF

How to use Merge PDF

  1. Add your filesDrop your PDFs or images onto the Merge PDF tool, or browse to select. It opens in your browser — nothing is uploaded.
  2. Set your optionsChoose how you want Merge PDF to run — the options that matter, nothing more.
  3. DownloadRun the tool and download your finished file instantly.
Accepts
Two or more PDF files
Gives you
One combined PDF, in the order you set
Where it runs
In your browser — the file never leaves your device
Price
Free — no sign-up, no watermark

Common questions

Is Merge PDF free?

Yes — Merge PDF is free with no sign-up, no watermark and no daily limit on this tool. Heavier operations (OCR, conversion) have a generous daily quota on the free plan and are unlimited on Pro.

How do I merge pdf?

Open Merge PDF, drop your files, set the options, and download the result in a few seconds — processed securely, no queue and no ads.

Does Merge PDF upload my file?

No. Merge PDF runs entirely in your browser: the PDF is processed on your own device and is never sent to our servers, so it also works on confidential documents. If your browser cannot run it, the tool asks before using our server instead — nothing is uploaded unless you agree.

Can I choose the order the PDFs are combined in?

Yes. Drag the files into the order you want before merging — the combined PDF follows that order exactly, and the file names have no effect on it.

Is there a limit on how many PDFs I can merge at once?

No fixed count. Add as many files as you need in one go; the practical limit is the total size of the files you upload, not how many there are.

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