Google can limit its search results to contain specific types of files. For example, if you’re writing a social media policy for your company, you might find it beneficial to see some examples. You could limit a Google search to Microsoft Word documents only. This is easy to do using Google’s filetype: keyword.

Here’s how: Type this in a Google search box (no space between the filetype and colon)

social media policy filetype:pdf  

Search results (partial):

Popular Google filetype search options with examples:

• Excel: xls
• home amortization filetype:xls
• buy vs. lease filetype:xls
• PowerPoint: ppt
• global warming filetype:ppt
• retirement planning filetype:ppt
• Word: doc
• business plan template filetype:doc
• 5160 labels filetype:doc
• award certificate filetype:doc
• Acrobat: pdf
• health care proxy filetype:pdf
• 1099 -filetype:pdf   / In this example, the minus sign preceding filetype EXCLUDES pdf documents for this search
• Image: jpg
• us flag filetype:jpg