min-zoom

The min-zoom CSS descriptor sets the minimum zoom factor of a document defined by the @viewport at-rule. The browser will not zoom out 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.

Related at-rule@viewport
Initial valueauto
Percentagesthe zoom factor itself
Mediaas each of the properties of the shorthand:
Computed valueauto, or a non-negative number or percentage as specified
Canonical orderthe unique non-ambiguous order defined by the formal grammar

Syntax

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

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

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

Values

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

Formal syntax

auto | <number> | <percentage>

Specifications

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

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
min-zoom descriptorChrome Full support 29Edge Full support 12
Prefixed
Full support 12
Prefixed
Prefixed Implemented with the vendor prefix: -ms-
Firefox No support NoIE Full support 10
Prefixed
Full support 10
Prefixed
Prefixed Implemented with the vendor prefix: -ms-
Opera Full support 16Safari No support NoWebView Android Full support 37Chrome Android Full support 29Firefox Android No support NoOpera Android ? Safari iOS No support NoSamsung Internet Android Full support 2.0

Legend

Full support  
Full support
No support  
No support
Compatibility unknown  
Compatibility unknown
Requires a vendor prefix or different name for use.
Requires a vendor prefix or different name for use.