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This is an experimental technology
Because this technology's specification has not stabilized, check the compatibility table for usage in various browsers. Also note that the syntax and behavior of an experimental technology is subject to change in future versions of browsers as the specification changes.


The HTML Details Element (<details>) is used as a disclosure widget from which the user can retrieve additional information.

Content categories Flow content, sectioning root, interactive content, palpable content.
Permitted content One <summary> element followed by flow content.
Tag omission None, both the starting and ending tag are mandatory.
Permitted parent elements Any element that accepts flow content.
DOM interface HTMLDetailsElement


This element includes the global attributes.

This Boolean attribute indicates whether the details will be shown to the user on page load. Default is false and so details will be hidden.


  <summary>Some details</summary>
  <p>More info about the details.</p>

Live result

Note: If the live sample above doesn't work for you, see Browser compatibility to determine if your browser supports the feature at all.


Specification Status Comment
WHATWG HTML Living Standard
The definition of '<details>' in that specification.
Living Standard  
The definition of '<details>' in that specification.
Working Draft Initial definition

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
Basic support 12 47.0 (47.0)[1] No support 15 6
Feature Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support 4.0 47.0 (47.0)[1] No support No support No support

[1] This feature is currently implemented in Nigthly releases behind the preference dom.details_element.enabled (see bug 591737; changable via about:config), defaulting to false. See also bug 1226455.

See also

Document Tags and Contributors

 Last updated by: slimsag,