File.image?

File.image?(file)

The File.image? method will return a boolean to indicate whether or not the file you've specified is an image or not.

For purposes of this library, an image is a file that is identified as a jpeg, gif, png, bmp, tiff or ico file. The implementation does a check against the first few bytes of the file as well as the file extension, though the latter can be disabled.

Specific Image Test Methods

Instead of checking for a generic image result, you can check for a specific type of image using the following methods:

• File.bmp?
• File.jpg?
• File.gif?
• File.ico?
• File.png?
• File.tiff?