People are normally impatient when waiting to see something on the internet. If your photos take, what seems to be, an eternity to appear on the screen, most people will simply move on to the next internet site. Only your home church and your mom will have the patience to wait two minutes for your page to completely appear. Use photographs, but use them sparingly and use them to illustrate what you've written. Only the volunteer group who is pictured will take the time to look at such pictures.
Size is important.
Your digital camera will often take photos that are from 150 kb to 900 kb or more. This is good for print, but not for the internet. Try get your photos down to around 10 kb or smaller. You should have some photo editing software in your computer. There are many brands on the market, plus photo editing software almost always comes with the digital camera.