Did you use any image optimization software for your images to the website? If yes, then what was and how it has been working now?
Have you tried searching the forum?
Have you tried searching the forum? - Yes
Then you’ll have noticed that image optimization software is not the only, and not the most important factor in the optimization process:
- [U]What is the best image optimizer you know of? - That is … you! Why?[/U]
- In [U]How to reduce image size as much as possible? It just not that simple…[/U] are more detailed guidelines by dresden_phoenix to keep in mind.
- In [U]this post[/U] some tips are added.
Only after having done this process myself, I go to automated image optimization software.
Personally, I’ve very good experiences with the (free) online:
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Ha, now I see in your profile that you are “founder of a software selling company regarding image optimization (… etc.)” 
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