PDF Suite by Function Labs

Sign a PDF online

Add a drawn signature to a PDF, position it on the page and save a downloadable copy. Choose the file directly; there is no need to build a document library first.

One premium action is available free where your trial has not been used. Further signing and editing require a day pass or Pro. This adds a visible signature; it is not a certificate-based signing service.

Drop a PDF here

or click to browse · PDF up to 25MB

No account needed to start. Save to a library only by choice.

How it works

  1. Step 1

    Choose the PDF you need to sign.

  2. Step 2

    Draw a signature and click the page to position it.

  3. Step 3

    Save the PDF and download your finished copy.

Common questions

Will I be asked to subscribe?

You can use an available one-time premium trial or buy a £2.49 day pass with no subscription. Pro is optional.

Is a saved library required?

No. Choose a PDF from your device and download the result. Saving to your account is optional.

Finish today's PDF jobs without another subscription.

Three free everyday tasks per 24 hours. Need the full suite? The £2.49 day pass includes 24 hours of premium access without a recurring payment.

Compare the day pass and Pro