We're looking for a person or people to help audit MDN to find places we could speed up. Is this you or someone you know? Check out the RFP: https://mzl.la/2IHcMiE


The min-zoom CSS descriptor sets the minimum zoom factor of a document defined via @viewport. 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 zoom in. Smaller values zoom out.

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


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

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

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


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

Formal syntax

auto | <number> | <percentage>


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

Browser compatibility

We're converting our compatibility data into a machine-readable JSON format. This compatibility table still uses the old format, because we haven't yet converted the data it contains. Find out how you can help!

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
Basic support ? ? ? ? ?
Feature Android Chrome for Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support ? ? ? ? ? ?

Document Tags and Contributors

 Contributors to this page: mfluehr, Sebastianz, teoli, LouisLazaris, fscholz, cvrebert
 Last updated by: mfluehr,