I add new photos to my portfolio each time I finish a project. They may not go through all of them, but they can scan through to see which ones are similar projects to theirs. I also get a lot of traffic based on the descriptions with each project.
For example... Search Google for 'Slate Floor Remodeling Pictures.' or 'Slate Shower Photos'. Analytics shows I get a lot of organic traffic from these kinds of searches. 'Bathroom Remodeling Photos' brings me up on page one--which is pretty damn good for a generic, non local keyword search.
However, when you search in Google Images, my stuff doesn't come up anywhere and that's why I'm asking about optimizing photos. I'm assuming keyword rich file names are part of it--but was curious to know what everyone else was doing.
I also often refer to them during meetings with potential clients as a visual reference to conditions that are similar, materials, combinations, layouts, etc.
If I understand the question correctly you may need to get a photo editing software like Corel (I use this one) or PhotoShop to batch re-size the photos. That way you don't have to do them individually.
You actually have THOUSANDS of pictures? Why?
IMHO no-one is going to go through all of them.
Andy.