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HTML <bdi> tag

HTML <bdi> tag stands for Bidirectional Isolate Element. It is used to inform the browser to isolate the span of text which may be formatted in opposite directions than the surrounding text.

This tag is new in HTML5 and useful for languages such as Arabic or Hebrew, or if the browser dynamically inserts some text without knowing the directionality of text.

Note: The directionality of content inside <bdi> does not influence by the directionality of surrounding content.


Following are some specifications about the <bdi> tag

Display Inline
Start tag/End tag Both start and End tag
Usage Semantic/textual


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HTML bdi tag


Tag-specific attribute:

The <bdi> tag does not include any specific attribute

Global attribute:

The <bdi> tag supports all Global attribute

Event Attributes:

The <bdi> tag supports all Event Attributes

Difference between <bdi> and <bdo>

HTML <bdi> tag is new element of HTML5 and it is very similar to HTML <bdo> element. But the main difference in both the elements is that <bdi> tag isolates the content from its surrounding content but <bdo> tag reveres the direction. Sometimes <bdo> tag may cause some unexpected rendering errors so try to use <bdi> if required.

Supporting Browsers

Elementchrome browser Chromeie browser IEfirefox browser Firefoxopera browser Operasafari browser Safari
Next TopicHTML bdo Tag

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