^{: The SUP Element}

Last updated: 2026-09-12

<sup>The SUP Element

Defines superscript text shown above the baseline, used for footnotes (e.g. x²) and ordinals.

Category	Formatting
Content Model	Phrasing content
Allowed Parents	Any element that accepts phrasing content
Content Tag	Yes — requires closing `</sup>` tag
Status	Standard

📝 Syntax

<sup>superscript</sup>

See all global attributes → See all event attributes →

▶ Example

Edit the code below and see the live result in the playground:

▶ Try it

🌐 Browser Support

Browser	Chrome	Edge	Firefox	Safari	Opera
<sup>	✓ v1	✓ v12	✓ v1	✓ v1	✓ v1
Supported in all major browsers

Tip： Superscript is ideal for footnote numbers; pair with <a> to make clickable annotations.

<sup> — formatting tutorial

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: The SUP Element

<sup>The SUP Element

📝 Syntax

▶ Example

🌐 Browser Support

🏷️ Related Tags

💡 Related Cases

📚 Related Tutorials

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^{: The SUP Element}