Are my result ok or not? Newbie

[didier]

Thanks for your answer.

So If I understand what you are writing, the keep-alive depends on my hosting? I should ask them to make it enable?

Second, I'm trying to put an expires header on the images, but I'm not succeeding with this. I find a lot of examples but is confusing, can you help me with this?

What about the cookie column? It's return a cookie session_id, where does this come from?

regards,
Didier