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 AndroidEdge MobileFirefox for AndroidOpera for AndroidiOS SafariSamsung Internet
Basic supportChrome Full support 29Edge Full support Yes
Prefixed
Full support Yes
Prefixed
Prefixed Requires the vendor prefix: -ms-
Firefox No support NoIE Full support 10
Prefixed
Full support 10
Prefixed
Prefixed Requires the vendor prefix: -ms-
Opera ? Safari No support NoWebView Android ? Chrome Android Full support 29Edge Mobile Full support Yes
Prefixed
Full support Yes
Prefixed
Prefixed Requires the vendor prefix: -ms-
Firefox Android No support NoOpera Android ? Safari iOS No support NoSamsung Internet Android ?

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.

Document Tags and Contributors

Last updated by: connorshea,