Free software on your phone or tablet lets you scan, create, edit, annotate and even sign digitized documents on the go.

Last year, I reviewed Xodo, an excellent online PDF editor well worth checking out (you can read my review here). But did you ...

You can edit a PDF on your Mac with Preview, an app that's built-in to your computer from the start. You can use this program to edit photos, too.

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The free ONLYOFFICE productivity suite has been updated with a host of new features, including an improved PDF Editor.