When I use W3TC for caching, it appends a question mark and some letters to the end of cached images. Google pagespeed doesn't like this, and it breaks my lightbox plugin functionality.
How to I fix this? Is there a way to cache images without appending that stuff? Or is there a lightbox plugin that doesn't break when images are cached?
Thanks for any advice on this. I've been tweaking and researching for days, and haven't found a solution yet.