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HTML <source > tag

HTML <source> tag is used as a child element to define more than one media resources for <audio>, <video>, and <picture> element.

It is used to provide the same media content with different formats such as mp3, mp4, etc.

When we embed multiple resources with the same content but different format then the browser may choose the most compatible format and display or play that media file.

The <source> tag was introduced in HTML5.


Following are some specifications about the HTML <source> tag

Display Inline
Start tag/End tag Empty tag( Only start tag)
Usage Media resource


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HTML source tag


Tag-specific attributes:

Attribute Value Description
media Media_query It determines that for which media/device the linked source is optimized.
sizes It specifies acceptable image sizes for different page layout.
src It determines the URL of media files.
srcset Specifies the URL of the image for different situations. It is only used when <source> is child of <picture> element.
type video/ogg
It determines the media type of resource.

Global attribute:

The <source> tag supports the Global attributes in HTML.

Event attribute:

The <source> tag supports the Event attributes in HTML.

Supporting Browsers

Elementchrome browser Chromeie browser IEfirefox browser Firefoxopera browser Operasafari browser Safari
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