Configure IFilters and File Types
In order for SharePoint to index a particular type of content, it must be able to load and process the file format of the page or document. SharePoint comes with the ability to index most standard file types, including all Office formats, text, XML, and—new to SharePoint 2010—both TIF and Zip files. At times, it is necessary to expand or adjust the list of formats that SharePoint can index by installing new IFilters and registering the new file types.
Understanding IFilters and File Formats
When SharePoint processes an address in a content source, it performs two tests on each file that it finds to determine whether it is able to index it:
1. SharePoint checks the extension of the content file against the list ...
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