Welp Meaning

What does help mean?

Hello this is

Welp Meaning

What exactly is help? 3
What exactly does Welp mean when used online? I met him and had never seen him before.
And I mean, welcome, not the dog, if anyone asks (I doubt it).
Thank you very much!
update
Thanks guys! Difficult question: Why isn't it good for dogs only, right? Are there other meanings like satire?
The meaning of help
Definition of help