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@viewport.max-zoom

The max-zoom CSS descriptor sets the maximum zoom factor of a document defined by the @viewport at-rule. The browser will not zoom in any further than this, whether automatically or at the user's request.

A zoom factor of 1.0 or 100% corresponds to no zooming. Larger values are zoomed in. Smaller values are zoomed out.

Syntax

/* Keyword value */
max-zoom: auto;

/* <number> values */
max-zoom: 0.8;
max-zoom: 2.0;

/* <percentage> value */
max-zoom: 150%;

Values

auto
The user agent will set the document's upper zoom factor limit.
<number>
A non-negative number limiting the maximum value of the zoom factor.
<percentage>
A non-negative percentage limiting the maximum value of the zoom factor.

Formal definition

Related at-rule @viewport
Initial value auto
Percentages the zoom factor itself
Computed value auto, or a non-negative number or percentage as specified

Formal syntax

auto | <number> | <percentage>

Examples

Setting max-zoom

@viewport {
  max-zoom: 1.5;
}

Specifications

Specification Status Comment
CSS Device Adaptation
The definition of '"max-zoom" descriptor' in that specification.
Working Draft Initial definition

Browser compatibilityUpdate compatibility data on GitHub

Desktop
Chrome Edge Firefox Internet Explorer Opera Safari
max-zoom descriptor 29 — 84 12
Prefixed
12
Prefixed
Prefixed Implemented with the vendor prefix: -ms-
No 10
Prefixed
10
Prefixed
Prefixed Implemented with the vendor prefix: -ms-
16 No
Mobile
Android webview Chrome for Android Firefox for Android Opera for Android Safari on iOS Samsung Internet
max-zoom descriptor No 29 — 84 No 16 No 2.0

See also

© 2005–2020 Mozilla and individual contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/CSS/@viewport/max-zoom