Voila!

Here's the exhaustive list of all relevant UTF-8 characters / HTML entities related to this topic: Symbol Hex Dec Description ☐ &#x2610 ☐ ballot box ☑ &#x2611 ☑ ballot box with check ☒ &#x2612 ☒ ballot box with x ✓ &#x2713 ✓ check mark, equivalent to ✓ and ✓ in most browsers ✔ &#x2714 ✔ heavy check mark ✗ &#x2717 ✗ ballot x ✘ &#x2718 ✘ heavy ballot x You don't actually need to use HTML entities -- as long as your HTML document's encoding is declared properly as UTF-8, you can simply copy/paste these symbols in the file/server-side script/JavaScript/whatever.