Depends on whether you would consider an image very similar to many, many others that get compressed to JPEG is "appropriate" (i.e. relevant, representative), or whether you are asking as a prude.

> Is it welcoming?

I can't see anything unwelcoming about that picture, at least not in any other way than many people's flattering profile pictures on social media. It's just a head of an attractive woman, shot by a professional photographer.