The PDF format is meant to be non-editable, but if you scan a document that comes out too light or receive a contract with type that is too faint to read, you need a way to darken a PDF. Here are a ...

UPDF has always been a fantastic PDF editor for iPhone, iPad, and Mac. PDF features like annotation, editing, converting, optical character recognition (OCR), protecting, filling, and signing are easy ...

PDF-XChange Editor is has a boatload of features, for creating, editing, annotating, and securing PDF documents. The fully functional free versions offer plenty for many users, but you’ll have to pay ...

PDF Reader Pro is an easy-to-use PDF reader for Windows with basic editing functions. PDF Reader Pro is a free, lightweight Windows app that provides a basic set of tools for working with Adobe ...

Cisdem PDFMaster for macOS is a decent app for those looking to make casual adjustments to their documents, although it lacks features for professionals. EaseUS is also packaging this up as its Mac ...