A PDF Editor is a software tool that allows users to create, modify, and manage PDF (Portable Document Format) files. With a PDF editor, you can add or remove text, images, and links, as well as rearrange pages within a document. This makes it easier to customize documents for various purposes, such as reports, forms, or presentations. Many PDF editors also offer features like annotation, highlighting, and commenting, which are useful for collaboration and feedback. Some popular PDF editors include Adobe Acrobat, Foxit PhantomPDF, and Nitro PDF. These tools can be used on different devices, including computers and tablets.