These “fonts” are really special Unicode characters that look like letters, so your text stays text: paste it into an Instagram bio, a TikTok name, a Discord status or a game nickname and it looks the same there.
Styles include bold, italic, cursive, gothic (fraktur), double-struck, bubble and square letters, small caps, monospace, upside down, strikethrough and decorations like ꧁ ꧂ and ★彡. Want real lettering in a font instead? Make a transparent PNG on the second tab.
