Solid Converter is a very useful app that was created in order to help users convert PDF files to Word, Excel, HTML, PowerPoint, or just plain text.

It comes with a pretty cluttered looking interface but even though it might look that way, it is actually pretty simple to navigate through it, and users will be able to insert PDFs by using the file browser or the drag and drop function, in order to modify the content, add watermarks and metadata and even password-protect it.