Is there a filter to change the generated cache?

Thanks for the great plugin.

I’ve a dynamic section on my homepage, which shows 2 images. I would like to preload these images. These images change 2-3 times a week, so I’ve to dynamically determine which image to preload.

When the cache file is created if there is a filter, I’ll parse the cache html and retrieve these images and add the code preload them.

So is there any filter to change the generated cache content?

Thanks,