Website Design - Photo Format and Alignment

[saudilawyers]

Hi,

I am redesigning our website [link removed by moderator] by inserting photos in the sub-pages.

What is the best photo format that I could use to have better resolution and quality for the photos? I converted the photos to JPEG and PNG using Photoshop. If i increase the resolution of the photos in Photoshop, does it help?

I really appreciate your expert advice and opinions on this. Thanks.