Hey there,

Unfortunately currently we do not have a feature automatically archive blog in certain period of time.

Can you elaborate more details regarding these "Orphaned images, image size info"?

Orphaned images is where an image is not used on the site, the image size is where my clients might have uploaded an image which is way too big for purpose.

Basically you would like to optimise your page right?

If yes, I would suggest you that use pagespeed to optimise your site from your server, it's actually an apache / nginx module that can be used to compress and minify a page on the web server's layer without compromising performance of php, so it will improve your site performance faster as well.

Then enabled Gzip compression from backend, it will reduces/optimise for those site image, javascript and css resources file size on your site.

You can read more about mod_pagespeed from https://developers.google.com/speed/pagespeed/module/

Hope this will help.