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Document: contentType property

Baseline

Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since April 2018.

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The Document.contentType read-only property returns the MIME type that the document is being rendered as. This may come from HTTP headers or other sources of MIME information, and might be affected by automatic type conversions performed by either the browser or extensions.

Note: This property is unaffected by <meta> elements.

Value

contentType is a read-only property.

Specifications

Specification
DOM # ref-for-dom-document-contenttype①

Browser compatibility

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This page was last modified on Sep 25, 2025 by MDN contributors.

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