Very much so. I-JFIF yi-JPEG eqhelekileyo ehamba ngesantya esincinci phantsi kokuqala ko-1992 okubhaliweyo okuphezulu kwephepha okutshintshelana, oko kubangela ukuba abanye ababonisi babonise njengomfanekiso oqhelekileyo kwaye iikhamera zihlala ziyikhupha. That determines both the headroom available and whether the saving costs you anything in fidelity.
Yes — ababhali abaninzi babhala kwakhona i-JFIF njenge-JPEG eqhelekileyo xa begcina, ngoko ke gcina okubhaliweyo okuphambili ukuba uluhlu lwe-.jfif lubalulekile nakweyiphi na into esebenzisa ifayile. It is worth knowing before you overwrite an original you might need again.
Ingaba i Cima JFIF iya kunyusa ubunjani be JFIF images yam?