The best free PDF reader apps do more than just act as a PDF viewer - any modern browser can do that. What I'm looking for is tools that go beyond that, offering commenting, collaboration, and ...

Want to insert stamps into your PDF documents? A Stamp is a type of annotation that effectively conveys your intention regarding the document. These PDF Stamp Creator software let you put a stamp into ...

This well-designed and easy-to-use free PDF viewer lets you mark up and create PDFs. Adobe’s popular PDF format makes files look great and Adobe’s free Reader lets everyone look at the files for free.

The software Google's browser uses to show PDF files has been proprietary for years, but now it's an open-source project called PDFium that others can scrutinize or use themselves. Stephen Shankland ...

Gaaiho Reader is a is a feature-rich, free PDF viewer with full support for all of the content embedded in a typical PDF document like form-filling, multimedia, and links. Unlike most free PDF viewers ...

The files with AI extension represent the vector images created in Adobe Illustrator software. Graphics designers use Adobe Illustrator to create different types of images, like banners, logos, ...

Gmail gets a handy update that lets you open PDFs using the Google Docs viewer. Gone is the option to open them up in HTML, but this is a good thing. Josh Lowensohn joined CNET in 2006 and now covers ...