Text Formatting
HTML <sub> Tag
The <sub> tag defines subscript text. Subscript text appears half a character below the normal line, and is sometimes rendered in a smaller font. Subscript text can be used for chemical formulas, like H2O.
Definition and Usage
The <sub> tag defines subscript text. Subscript text appears half a character below the normal line, and is sometimes rendered in a smaller font. Subscript text can be used for chemical formulas, like H2O.
Standard Syntax:
<sub>...</sub>Interactive ExampleRunnable
HTML <sub> Example
htmlLive code demonstration for the <sub> tag. Click "Try it Yourself" to edit and experiment in real time.
<div style="font-family: system-ui, sans-serif; padding: 16px; background: #ffffff; border-radius: 8px; border: 1px solid #e2e8f0; color: #0f172a;">
<p>This text contains <sub>subscript</sub> text.</p>
</div>Attributes for <sub>
0 Supported AttributesThe <sub> tag does not have tag-specific attributes. It supports all standard Global Attributes.
Global Attributes
The <sub> tag also supports the standard global attributes in HTML, including class, id, style, title, hidden, and data-*.
Event Attributes
The <sub> tag supports event attributes in HTML, such as onclick, onmouseover, onfocus, and more.
Browser Compatibility
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