What 80 KB is good for
80 KB is a document-friendly size. When a photograph is embedded in a CV, a report, or a slide deck, it needs to be sharp on screen and in print without inflating the file it lives inside.
Documents accumulate weight quickly. A CV with a photo and two logos at 80 KB each stays comfortably emailable; the same document with unprocessed camera images can exceed 10 MB.