Should I put images in a subdomain to speed up the loading of the site?

Question

I read somewhere that browsers can only send a few concurrent requests for resources in a domain. So, if we divide the resources into subdomains or can be domains .. will it accelerate?

Have you experimented with this? What were the results or problems, if any?

Answer 1

This definitely helps, but start with css sprites first. Also keep in mind that for each additional domain a DNS query is required and therefore slows down!

Check out this great introduction to Yahoo: Performance Research, Part 4: Maximizing Parallel Downloads in Carpool Lane

Answer 2

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