Visible Character Counter
Count what readers perceive as visible characters and compare that total with Unicode code points and UTF-16 code units. Emoji sequences, flags, skin-tone modifiers, and letters with combining marks can contain several code points while appearing as one character.
Why the Counts Differ
JavaScript string length counts UTF-16 code units. Array-based iteration counts Unicode code points. A grapheme-aware count follows user-perceived character boundaries, so a family emoji or a letter plus combining accent can count as one visible character.