# Extension

Return the file extension of the image.

## Parameters

None

## Return Values

`string`

## Examples

```go
package main

import (
    "fmt"
    "github.com/fishtailstudio/imgo"
)

func main() {
    img := imgo.Load("gopher.png")
    fmt.Println(img.Extension())
}
```

Output:

```
png
```