Here is a screen shot below of the PDF Studio editing a PDF file adding highlighting and extra text to the file. Functions of this tool include: annotation, highlighting, underlining, cross-out, PDF Form Editing, Editing text, content, shapes, insert, move and delete pages, text redaction, merging documents, size reduction, as well as security features to add passwords and or encryption, and as many features for working with editing PDF files as you imagine. There is a free and a paid version of the product that can be downloaded from the PDF tool link. PDF Studio is a very reliable multi-function PDF tool that is recommended for both viewing and editing PDF files as well as other advanced functions on PDF files. This article looks at seven of the best PDF Editors available on all major platforms. These files are also secure enough to prevent people from easily updating file contents.

PDFs are one of the most reliable and efficient formats of documents that can easily be shared across computer systems. The recent rise in popularity of eBooks has led to the emergence of several different file formats, of which the most popular and the most widely used is the Portable Document Format, or PDF for short.

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