To see alt text in a completed PDF document, you'll need to use a screen reading app, which is an accessibility tool for visually impaired users.

With other file formats that have text, it is usually easy to copy or export the content to plain text — for example, to quote it in another text. This is not the case with PDF.

To write on a PDF on Android, open the PDF file in the Adobe Acrobat Reader: Edit PDF app, and tap on the Text icon. Select where you want to input new text and type away.

Quick tip: You can also sign a PDF document on any device, without the need for a printer or scanner. Here's how to type on a PDF, whether you're using a Mac, PC, mobile device, or Microsoft Word.