Some good PDF editing software choices that have no upfront costs include AbleWord, PDFescape and Inkscape. These three choices allow users to add text and images to PDFs, save and export the files, and rotate and zoom documents for easy use.
AbleWord is a fully functional PDF editor that shares many features with paid variants. The software works primarily as a word processor, but it can access and write PDF documents as easily as standard text files. The program offers many document editing options, and it has the ability to import PDF files and export Word documents, making it a handy conversion tool as well.
PDFescape is a web-based tool for editing PDF files. The web-based design allows it to work on almost any system that can use a popular web browser, and the program makes it easy to add or white out text and images on PDF files or digitally sign content. The reader works with most supported PDF features, and PDFescape provides autofill and annotation features unavailable on some other free tools.
Inkscape also has the ability to import and alter PDF files, and the open-vector graphics editor makes it easy for designers and illustrators to make changes to a variety of documents. Inkscape users also benefit from the support of a vibrant community for assistance with most editing tasks using the software.