C-level executive does mean something to people executives at large corporations, but calling yourself a CEO on your webpage/business card won't actually make y

C-level executive does mean something to people executives at large corporations, but calling yourself a CEO on your webpage/business card won't actually make you a CEO for anyone who understands that. If your resume doesn't say P&L responsibility for >X millions in revenue, don't throw around the term CEO because you will come across as a braggart. President or founder are much more accurate descriptions for what most startup founders call the "CEO" position.