Portable document format (PDF) files remain a popular choice for business documents ranging from contracts and forms to manuals and reports, so there's a good chance you need to open them often.
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.
Free software on your phone or tablet lets you scan, create, edit, annotate and even sign digitized documents on the go.