<picture>: The Picture element - HTML: HyperText Markup Language 编辑

The HTML <picture> element contains zero or more <source> elements and one <img> element to offer alternative versions of an image for different display/device scenarios.

The browser will consider each child <source> element and choose the best match among them. If no matches are found—or the browser doesn't support the <picture> element—the URL of the <img> element's src attribute is selected. The selected image is then presented in the space occupied by the <img> element.

The source for this interactive example is stored in a GitHub repository. If you'd like to contribute to the interactive examples project, please clone https://github.com/mdn/interactive-examples and send us a pull request.

The source for this interactive example is stored in a GitHub repository. If you'd like to contribute to the interactive examples project, please clone https://github.com/mdn/interactive-examples and send us a pull request.

To decide which URL to load, the user agent examines each <source>'s srcset, media, and type attributes to select a compatible image that best matches the current layout and capabilities of the display device.

The <img> element serves two purposes:

1. It describes the size and other attributes of the image and its presentation.
2. It provides a fallback in case none of the offered <source> elements are able to provide a usable image.

Common use cases for <picture>:

• Art direction. Cropping or modifying images for different media conditions (for example, loading a simpler version of an image which has too many details, on smaller displays).
• Offering alternative image formats, for cases where certain formats are not supported.

  Note: For example, newer formats like AVIF or WEBP have many advantages, but  might not be supported by the browser. A list of supported image formats can be found in: Image file type and format guide.

• Saving bandwidth and speeding page load times by loading the most appropriate image for the viewer's display.

If providing higher-density versions of an image for high-DPI (Retina) display, use srcset on the <img> element instead. This lets browsers opt for lower-density versions in data-saving modes, and you don't have to write explicit media conditions.

Attributes

This element includes only global attributes.

Usage notes

You can use the object-position property to adjust the positioning of the image within the element's frame, and the object-fit property to control how the image is resized to fit within the frame.

Note: Use these properties on the child <img> element, not the <picture> element.

Examples

These examples demonstrate how different attributes of the <source> element change the selection of the image inside <picture>.

The media attribute

The media attribute specifies a media condition (similar to a media query) that the user agent will evaluate for each <source> element.

If the <source>'s media condition evaluates to false, the browser skips it and evaluates the next element inside <picture>.

<picture>
  <source srcset="mdn-logo-wide.png" media="(min-width: 600px)">
  <img src="mdn-logo-narrow.png" alt="MDN">
</picture>

The srcset attribute

The srcset attribute is used to offer list of possible images based on size.

It is composed of a comma-separated list of image descriptors. Each image descriptor is composed of a URL of the image, and either...

• a width descriptor, followed by a w (such as 300w);
  OR
• a pixel density descriptor, followed by an x (such as 2x) to serve a high-res image for high-DPI screens.

<picture>
  <source srcset="logo-768.png 768w, logo-768-1.5x.png 1.5x">
  <source srcset="logo-480.png, logo-480-2x.png 2x">
  <img src="logo-320.png" alt="logo">
</picture>

The type attribute

The type attribute specifies a MIME type for the resource URL(s) in the <source> element's srcset attribute. If the user agent does not support the given type, the <source> element is skipped.

<picture>
  <source srcset="logo.webp" type="image/webp">
  <img src="logo.png" alt="logo">
</picture>

Specifications

Browser compatibility

BCD tables only load in the browser

See also

• <img> element
• <source> element
• Positioning and sizing the picture within its frame: object-position and object-fit
• Image file type and format guide