As they say themselves, Google works to organize all information in the world and make it accessible to everyone. Of course, Google encounters files that aren't HTML, such as spreadsheets, presentations, and PDFs during this long-term endeavor. In those cases, they work to find the appropriate content and index it for search results. Not surprisingly, these file types can be difficult to index. What guidelines should they follow? What happens if you don't want Google to index them? Google has compiled the most frequently asked questions regarding PDF indexing and here's what they have to say: Q. Can Google index PDF files?A: Google can generally index textual content written in any language from PDF files. However, they must not be password protected or encrypted. Google can process images embedded with text using OCR algorithms. Google should be able to index text that you can copy from PDF documents into standard text documents. Q. How are PDF documents treated [...]