Site with list of most popular file formats

Is there a site that lists popular file formats?

I am aware that it would be hard to find out which file formats are popular, and I do not need exact popularity, just approximation. I guess companies that develop anti-malware software could have some information about files that are scanned.

I have found a few pages that list all file formats (like http://en.wikipedia.org/wiki/List_of_file_formats), but I need just a few popular ones.

It would be nice if list could be filtered by type (audio, video...) or platform (Windows, Linux, Mac...), but that is optional.

Some background: I am testing file upload for web application, and I do not want to test all file formats, just popular ones.

Solution 1:

Sure. http://www.fileinfo.com/

Solution 2:

If you are testing file uploads, I wouldn't be too concerned with file formats per-se, unless you are post processing them after they are uploaded what I would test is:

• Very large files
• Files that may be insecure .. such as buffer overflow payloads.
• Use some sort of checksum to ensure that the files are uploaded correctly with out error, particularly on a flaky connection.
• Disconnecting partially through an upload an see what state that leaves the server and clients in
• File loads that take longer than web server session timeout
• Files from different filesystems hfs_, ext3, ntfs and Fat32
• Very long filenames
• filenames with multiple dots
• filenames with punctuation, underscores, dashes

etc

Solution 3:

Could not resist this one --- TXT format!
The 'plain-text' files that manage to get messed up across unix and windows platforms all time.

+1 to Bruce for approaching the question correctly.
@Željko Filipin, If you know there is different behavior for some formats,
get that list specifically and check for it -- why look at all the formats in the world?
That list itself should suggest if other formats need to be checked.