MostlyPDF

Sign PDF

Fill in and sign a PDF — type your name or drop a signature image.

Open Sign PDF

How to use Sign PDF

  1. Upload your fileDrop your PDF onto the Sign PDF tool, or browse to select.
  2. Set your optionsChoose how you want Sign PDF to run — the options that matter, nothing more.
  3. DownloadRun the tool and download your finished file instantly.
Accepts
One PDF
Gives you
The signed PDF, ready to send
Price
Included with Pro

Common questions

Is Sign PDF free?

Sign PDF is a Pro feature ($5/month flat, free trial) — the everyday tools (merge, split, rotate, organize, watermark, page numbers, image to PDF) stay free with no sign-up, no watermark and no daily limit.

How do I sign pdf?

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

Are my files safe?

Files are sent over an encrypted connection and deleted automatically after processing. No one else can access them and they are never used for anything but your task.

How do I add my signature?

Draw it with a mouse or finger, type it and pick a style, or upload an image of your real signature — then place it where it belongs on the page and drop in any dates or text the document needs.

Is this the same as a digital certificate signature?

No. This places a visible signature on the page, which is what most documents ask for. For a cryptographically verifiable PKI signature, use Certify PDF instead.

All tools

Compare: MostlyPDF vs iLovePDF · MostlyPDF vs Smallpdf · MostlyPDF vs PDF24 · MostlyPDF vs Sejda · MostlyPDF vs Stirling PDF

A Mostly Tiny product · All tools