This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The size CSS at-rule descriptor, used with the @page at-rule, defines the size and orientation of the box which is used to represent a page. Most of the time, this size corresponds to the target size of the printed page if applicable.

Size may either be defined with a "scalable" keyword (in this case the page will fill the available dimensions) or with absolute dimensions.

Value not found in DB!

Syntax

/* Keyword values for scalable size */
size: auto;
size: portrait;
size: landscape;

/* <length> values */
/* 1 value: height = width */
size: 6in;

/* 2 values: width then height */
size: 4in 6in; 

/* Keyword values for absolute size */
size: A4;
size: B5;
size: JIS-B4;
size: letter;

/* Mixing size and orientation */
size: A4 portrait;

Values

auto
The user agent decides the size of the page. In most cases, the dimensions and orientation of the target sheet are used.
landscape
The content of the page is displayed in landscape mode (i.e. the longest side of the box is horizontal).
portrait
The content of the page is displayed in portrait mode (i.e. the longest side of the box is vertical). This is the default orientation.
<length>
Any length value (see <length>). The first value corresponds to the width of the page box and the second one corresponds to its height. If only one value is provided, it is used for both width and height.
<page-size>
A5
This matches the standard, ISO dimensions: 148mm x 210mm.
A4
This matches the standard, ISO dimensions: 210mm x 297mm. (most frequently used dimensions for personal printing.)
A3
This matches the standard, ISO dimensions: 297mm x 420mm.
B5
This matches the standard, ISO dimensions: 176mm x 250mm.
B4
This matches the standard, ISO dimensions: 250mm x 353mm.
JIS-B5
This correspond to the JIS standard dimensions: 182mm x 257mm.
JIS-B4
This correspond to the JIS standard dimensions: 257mm x 364mm.
letter
This keyword is a equivalent to the dimensions of letter paper in North America i.e. 8.5in x 11in.
legal
This keyword is a equivalent to the dimensions of legal papers in North America i.e. 8.5in x 14in.
ledger
This keyword is a equivalent to the dimensions of ledger pages in North America i.e. 11in x 17in.

Examples

@page {
  size: 4in 6in landscape;
}
@media print {
  @page {
    size: 50mm 150mm;
  }
}

Specifications

Specification Status Comment
CSS Paged Media Module Level 3
The definition of 'size' 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 support
Experimental
Chrome ? Edge ? Firefox ? IE ? Opera ? Safari ? WebView Android ? Chrome Android ? Edge Mobile ? Firefox Android ? Opera Android ? Safari iOS ? Samsung Internet Android ?

Legend

Compatibility unknown  
Compatibility unknown
Experimental. Expect behavior to change in the future.
Experimental. Expect behavior to change in the future.

See also

Document Tags and Contributors

Last updated by: AngReload,