PDF guides and how-tos

Short, practical explanations written to help you finish the task, not to sell you software.

How to sign a PDF on your phone

You do not need an app or a computer. Any modern phone browser can sign a PDF, and your document stays on the phone.

Printing, writing by hand and scanning is slow. Here is how to type straight onto the form instead, including forms that have no clickable fields.

A signature photographed on paper arrives with a grey or white box around it. Here is how to turn that box transparent so only the ink remains.

It depends on one question: does the website upload your file? Here is how to check and what else to look for.

People use the terms interchangeably, but they are not the same. Knowing the difference helps you pick the right method.

Acrobat is powerful, but most people only need to fix a line, sign or fill a form. Here is how to do it for free.