HTML <strong> Tag
Description
The <strong> HTML tag is used to give semantic emphasis to a portion of text, indicating that the content it encloses is of strong importance or seriousness. Unlike purely visual tags such as <b> (which only styles text bold without implying meaning), <strong> conveys meaningful emphasis to both users and assistive technologies, like screen readers. This makes it an important tag for accessibility and SEO, as it helps identify the critical parts of your content.
By default, browsers render <strong> text in bold, but the visual style can be customized with CSS. The key purpose of <strong> is semantic rather than stylistic - it signals that the text is important in the context of the content. For example, it can highlight warnings, key concepts, or essential instructions.
Use cases for <strong>:
- Highlighting important words in instructions, warnings, or alerts.
- Emphasizing key terms in educational content.
- Drawing attention to parts of a document that are vital for comprehension.
Best practices:
- Use
<strong>only when you want to convey importance, not just for styling. - For general stylistic bold text without semantic meaning, use
<b>or CSSfont-weight. - Combine
<strong>with other semantic tags where appropriate, like<em>for emphasis or<mark>for highlighting.
Example:
<p>Please read the <strong>terms and conditions</strong> carefully before proceeding.</p>
In this example, the <strong> tag indicates that "terms and conditions" are of critical importance, signaling both visual emphasis and semantic meaning.
Properties
- Permitted Parents
- Any element that accepts phrasing content, or any element that accepts flow content
- Content
- Inline and text
- Start/End Tags
- Start tag: required, End tag: required
Example
Attributes
None
Global Attributes
The <strong> tag also supports the Global Attributes in HTML5
Event Attributes
The <strong> tag also supports the Event Attributes in HTML5
Browser Support
The following information will show you the current browser support for the HTML <strong> tag. Hover over a browser icon to see the version that first introduced support for this HTML tag.
This tag is supported by all modern browsers.
Desktop
Tablets & Mobile
Last updated by CSSPortal on: 26th December 2025
