Extension List

This is my attempt to list all existing popular file extension.

Can be used for testing purposes, such as file explorer previews.

Extension finder Website

Website
Quick search engine, to know if a extension exist and what he look like.
And show can a list of every extensions. (Wiki like?)

That's the idea, but I won't develop it because I don't want to spend the little time I have for it. Feel free to develop it.

Contribution

You can help by adding/correcting files.

What file extension can I add?

Please don't put unpopular file extensions like:

• MyFirstApp.TomAwesomeAppThatNoOneUse
• config.TAconf (Tom App configuration file)

Exemple of popular files:
ISO standars
List of file formats

By unpopular, I mean, file extensions that have not been included in professional software or used very little.

How do I name the file?

Just put the full name of the extension. You can find them on Wikipedia, like:
MP4 -> Wikipedia:MPEG-4_Part_14 -> MPEG-4 Part 14.mp4

What content I can to put inside?

When generating a file, use default examples like:

• For texts: take the Lorem Lipsum from "Text Document.txt".
• For images: take the "Portable Network Graphics.png" file and convert it.
• For videos: take the file "MPEG-4 Part 14.mp4" and convert it.
• For the sounds: take the file "MPEG-1_2 Audio Layer III.mp3" and convert it.
• For the others :
  • Lorem Lipsum for media and visual. (Take the Lorem Lipsum from "Text Document.txt")
  • "hello, world" for code.

If possible, keep the file size small (50KB~ - 1MB~), files over 100MB are not accepted.

What if there is more than one extension for a type?

Create a folder with the same name as the file and put all files of the same type with a different extension name in it.

Joint Photographic Experts Group(.jpg, .jpeg, ...) will become

Joint Photographic Experts Group
 |_ Joint Photographic Experts Group.jpg
 |_ Joint Photographic Experts Group.jpeg
 ...