If a signature is not validated in a PDF, we see Validity unknown with a question mark. You need to validate the signature to make it valid.

Here are the simple steps to create an electronic signature so you can easily add it to PDF, Word and other documents.

Do you want to create unique, fillable PDF forms? This article will show you how to create fillable PDF forms using InDesign the easy way.

Signing documents the old fashioned way? Ditch that pen for good! Here’s how to easily create a digital signature using your phone.

How to Convert a Signed Signature to PDF. Adobe Acrobat is a powerhouse of productivity in the business world. It lets you create forms, documents, reports and presentations in the nimble PDF ...

This how-to guide will show you how to create an electronic signature and use it to sign a PDF file in Windows, MacOS, Android or iOS.

How to sign a PDF on an iPhone or Android using Adobe Fill & Sign If you're using an iPhone or Android mobile device to digitally sign a PDF, you'll want to download an app called Adobe Fill & Sign.

Learn how to create fillable PDF forms for free with this step-by-step guide. Save time, reduce errors, and streamline your workflow today.

Personalize your Apple Pages docs by adding a custom signature. Here’s how to create and insert one in Pages for macOS, iOS, and iPadOS.