If you are unable to select or highlight text in a PDF document in Adobe Acrobat Reader on Windows, use the below fixes: Check if the document is a scanned PDF document. Check if it is a secured ...

Highlighting text in a PDF document is handy for marking important areas you can access later. You can use Microsoft Edge to highlight PDF or any other software with a PDF highlighting feature.

ReaddleDocs’s PDF viewer now lets you highlight text inside PDF files in several colors, make notes at any place in the document, and save these changes in a desktop-compatible PDF format.