I need to export them as web images, not PDFs. Let's leave the template out of it, and walk before we run.
I've found it difficult to both resize and lower resolution; three times out of four, the image is too large for the upload software, even if I go to "Document--Resize--and lower DPI, hit resize, then go back in and alter the pixel sizes. THEN "File-Export ---and often I have to resize the image in this second step. This is wonky.
(I'm taking images from a PDF version of newspapers to place them on their website. The print ads don't fit the website standard sizes. I have to reduce the width or height to fit the standards, if I stretch it, it seems to increase the file size pretty substantially.)
My primary need is to understand what method/order is need to reduce the DPI in the Document and resize it to fit. Three times out of four, this doesn't work, and the document exceeds the 256 kb limit. I've found that taking a screenshot, and working with that, is more effective than importing the PDF where the images often are 600 DPI. I haven't found anything useful in videos or "Help".