# Badges > Small and adaptive tag for adding context to just about any content. ## Overview Badges scale to match the size of the immediate parent element by using relative font sizing and `em` units. ```html

Example heading New

Example heading New

Example heading New

Example heading New
Example heading New
``` Badges can be used as part of links or buttons to provide a counter (or similar flag). ```html
Notifications 4
``` Note that depending on how they are used, badges may be confusing for users of screen readers and similar assistive technologies. While the styling of badges provides a visual cue as to their purpose, these users will simply be presented with the content of the badge. Depending on the specific situation, these badges may seem like random additional words or numbers at the end of a sentence, link, or button. Unless the context is clear (as with the "Notifications" example, where it is understood that the "4" is the number of notifications), consider including additional context with a visually hidden piece of additional text. ```html
Profile 9 unread messages
``` ## Contextual variations Add any of the following variants via the `variant` prop to change the appearance of a ``: `default`, `primary`, `success`, `warning`, `info`, and `danger`. If no variant is specified `default` will be used. ```html
Primary Secondary Success Danger Warning Info Light Dark
``` ### Conveying meaning to assistive technologies Using color to add meaning only provides a visual indication, which will not be conveyed to users of assistive technologies – such as screen readers. Ensure that information denoted by the color is either obvious from the content itself (e.g. the visible text), or is included through alternative means, such as additional text hidden with the `.sr-only` class. ## Pill badges Use the `pill` prop to make badges more rounded (with a larger border-radius and additional horizontal padding). Useful if you miss the badges from Bootstrap v3. ```html
Primary Secondary Success Danger Warning Info Light Dark
``` ## Actionable badges Quickly provide actionable badges with hover and focus states by specifying either the `href` prop (links) or `to` prop (router-links): ```html
Primary Secondary Success Danger Warning Info Light Dark
``` Refer to the [Router support](/docs/reference/router-links) reference page for router-link specific props.