8.16.2010

Does Google index PDF files?

Question: Does Google index PDF files?

Answer: Yup, as long a the PDF is not encrypted or password protected, and it meets Google's other standards of index-ability, whatever they are. PDF files are frequently returned by a Google search.  Google has indexed PDF files since at least 2001, going by Search Engine Watch  According to GOS Blog in 2006, Google also uses Optical Character Recognition (OCR) to index PDF files consisting of scanned pages. This was confirmed in 2008 on the official Google Blog.

Furthermore, PDF files can contain hyper-links, if you put them there.  You know, links to URLs. Frequently the significance of this may be overlooked for SEO and marketing purposes.

A list of file types that Google indexes: Google Webmaster Central
"PDF formatted files are the most popular after HTML files. PostScript and Microsoft Word files are also fairly common. The other file types are relatively uncommon by comparison."
Google FAQ - Filetypes

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