PDF files have the option to let you share and comment on documents in a wide range of applications. Adobe Acrobat Reader and other free PDF programs offer a subset of the capabilities of the paid ...

The PDF viewer now has a new feature for adding comments within PDF documents. This allows users to add comments anywhere within a PDF document. To add a comment, open the PDF document, select the ...

A versatile, well designed, online PDF editor with numerous tools to hand to make all the changes you need making to a document, from minor typos to pretty much starting from scratch. Soda PDF Online ...

Adding audio comments to Acrobat is available for both the free version (Acrobat DC) and the paid version (Acrobat Pro). Adding audio comments to Acrobat can be done by directly recording the audio in ...