I accidentally used all of my large (size on disk) images on my portfolio page and have significant amount of caption text. I want to replace the large images with the smaller ones I prepared earlier without having to cut & paste and re-do all of the captions from scratch. I have also tested download speed on another machine and as expected, they take way too long to load. I have looked for ways with the Sparkling edit tools but cannot find a way. I was going to go through cpanel / file manager but thought I would ask first!!!
Hi @pat99,
I hope you are well today and thank you for your question.
You can try achieving this by using the following plugin.
Best Regards,
Movin
Thanks again Movin,
That works beautifully 
You are most welcome here