I have three questions re: images/wp-uploads. Hopefully, someone can help me out:
a) WordPress uploads four (or so) versions of any image uploaded via the "set as featured image" function. How can I ensure that only *one* version (the small thumbnail) is uploaded?
Our site has -- literally -- thousands of images. Four versions of each would help increase disk space rather rapidly, I think...
b) Since the creation of the site, all of our full-sized images (which we upload via FTP) are to be found in a folder in the site's root directory. Two weeks ago, we used a plugin to generate thumbnails for each post; as a result, now there are copies of those full-sized images in the wp-uploads folder as well -- in addition to medium/large "thumbs" for which we have no need.
Is there a way to delete those automatically, or...? If so, would any links be broken? (We haven't created any links for those images ourselves; I'm asking because I'm not sure if WP creates links for them automatically.)
c) As I explain above, our full-sized images (the ones uploaded via FTP) are placed in a folder in the root directory. In terms of page speed, does it matter *where* the images are located, i.e., root directory vs. wp-uploads folder or some other WordPress folder?
Any assistance/guidance/suggestions would be **much** appreciated.