//[docs](../../index.md)/[dev.inmo.tgbotapi.utils](index.md)/[fileExtension](file-extension.md)



# fileExtension  
[common]  
Content  
val [String](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-string/index.html).[fileExtension](file-extension.md): [String](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-string/index.html)