Good online library of common file formats.

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answers:

+5 Q:

Good online library of common file formats.

Is there a good online library site that brings together, in one place, the specifications of various file common formats such as PNG, MP3, 7Z, SVG, PDF, DOC and so on?

By "good" I mostly mean:

Extensive.
Up to date.
Tips and guidance.
Free.

I have in mind something the equivalent of http://www.pinvoke.net, but for file specifications.

+3 A:

How about http://www.wotsit.org/

Nick D 2009-09-17 08:47:37

+1 Nice. I'll have a look at that. Strange name, that's probably why I didn't spot it while googling.

Ash 2009-09-17 08:49:34

+1 A:

Or http://en.wikipedia.org/wiki/List_of_file_formats_(alphabetical)

rdkleine 2009-09-17 08:49:41

Thats ok, but I was hoping for the actual file specifications (eg header bytes etc) in one place.

Ash 2009-09-17 08:55:30

+1 A:

This is a good 'un: http://filext.com/

skaffman 2009-09-17 08:51:01

Not bad, it seems to focus on what a file is used by, rather then specs. It does link to external sites for specifications though. Just makes them a bit harder to find.

Ash 2009-09-17 08:53:56