Simpo PDF Creator is a powerful PDF writer, which provides three methods for creating PDF document. First of all, create PDF files from program interface. You could import different format of MS Office Document and images and convert to PDF files in a batch. It's available to merge all documents into one PDF file. You could merge several PDF files to one as well. Second, create PDF files via right-click. Just one click to create PDF files from Word, PowerPoint, Excel, txt and images files immediately. Third, you can easily create PDFs from any program that is able to print. It can be used as a printer in Word, Excel, PowerPoint or other Windows application. Thus, it's able to create PDF from any printable document, such as visio files, project files, html files, etc. This excellent PDF creator secures your PDF documents with strong 128bit encryption and allows setting password to protect the files. Besides, you can disallow Printing of the document, disallow Copying of Text and Images, disallow Modifications to the document and disallow Modifications to comments.