No way?
Extensions don't have any size distinction. They only distinguish file types, just like a person's ID card, making it easier to identify computer software files. The meanings of various extensions are as follows:
1. BMP, GIF, JPG are image files, and their identities are:
＊.BMP: basic drawing format file.
＊.GIF: images in this format support 256 colors and can be used to make small animations.
＊.JPG: a standard image file that uses the JPEG method to compress image data.
2. WAV, MID, MP3, MPG are media files, and their identities are:
＊.WAV: standard digital audio file.
＊.MID: records each note sent out by a MIDI device as a number, then outputs sound through various monotone mixes and synthesis.
＊.MP3: one of the popular digital sound file formats on the Internet.
＊.MPG: moving image and sound files using the MPG compression standard.
3. There are also some other files that can be identified by their extensions:
＊.HLP: system help file.
＊.BAK: system backup file.
＊.ZIP: archive.
Subdirectories do not have extensions. But extensions can also be used to name subdirectories.
