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Summary
The max-zoom CSS descriptor sets the maximum zoom factor of a document defined by @viewport. 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 zoom in. Smaller values zoom out.
| Related at-rule | @viewport |
|---|---|
| Initial value | auto |
| Percentages | the zoom factor itself |
| Media | visual, continuous |
| Computed value | auto, or a non-negative number or percentage as specified |
| Canonical order | the unique non-ambiguous order defined by the formal grammar |
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 syntax
auto | <number> | <percentage>
Specifications
| Specification | Status | Comment |
|---|---|---|
| CSS Device Adaptation The definition of '"max-zoom" descriptor' in that specification. |
Working Draft | Initial definition |
Browser compatibility
| 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 | ? | ? | ? | ? | ? | ? |