The Double Exclamation Mark symbol (‼). Copy and paste it, or use its Unicode, HTML, and CSS codes.
More from Punctuation.
The quickest way is to copy ‼ from this page and paste it anywhere. You can also insert it with its Unicode, HTML, or alt code listed above.
‼ is U+203C (decimal 8252).
Use ‼ in HTML to render ‼ on a web page.
On Windows you can type it with Alt+8252 (hold Alt and enter the number on the numeric keypad).
Yes — copying is completely free and unlimited, and works right in your browser with no sign-up.