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scaleY() CSS functionThis feature is well established and works across many devices and browser versions. Its been available across browsers since July 2015.
The scaleY() CSS function defines a transformation that resizes an element along the
y-axis (vertically). Its result is a <transform-function> data type.
transform: scaleY(1);
transform: scaleY(0.7);
transform: scaleY(1.3);
transform: scaleY(-0.5);
<section id="default-example">
<img
class="transition-all"
id="example-element"
src="/shared-assets/images/examples/firefox-logo.svg"
width="200" />
</section>
It modifies the ordinate (vertical, y-coordinate) of each element point by a constant factor, except when the scale factor is 1, in which case
the function is the identity transform. The scaling is not isotropic, and the angles of the element are not conserved.
scaleY(-1) defines an axial symmetry, with a horizontal axis passing through the origin (as specified by the transform-origin
property).
Note:
scaleY(sy) is equivalent to
scale(1, sy) or
scale3d(1, sy, 1).
transform: rotateX(180deg); === transform: scaleY(-1);
scaleY(s)
sIs a <number> representing the scaling factor to apply on the ordinate (vertical, y-coordinate) of each point of the
element.
| Cartesian coordinates on ^2 | Homogeneous coordinates on ^2 | Cartesian coordinates on ^3 | Homogeneous coordinates on ^3 |
|---|---|---|---|
| (100s)\left( \begin{array}{cc} 1 & 0 \\ 0 & s \end{array} \right) | (1000s0001)\left( \begin{array}{ccc} 1 & 0 & 0 \\ 0 & s & 0 \\ 0 & 0 & 1 \end{array} \right) | (1000s0001)\left( \begin{array}{ccc} 1 & 0 & 0 \\ 0 & s & 0 \\ 0 & 0 & 1 \end{array} \right) | (10000s0000100001)\left( \begin{array}{cccc} 1 & 0 & 0 & 0 \\ 0 & s & 0 & 0 \\ 0 & 0 & 1 & 0 \\ 0 & 0 & 0 & 1 \end{array} \right) |
[1 0 0 s 0 0] |
<scaleY()> =This syntax reflects the latest standard as per CSS Transforms Module Level 1. Not all browsers may have implemented every part. See Browser compatibility for support information.
scaleY( <number> )
<div>Normal</div>
<div class="scaled">Scaled</div>
div {
width: 80px;
height: 80px;
background-color: skyblue;
}
.scaled {
transform: scaleY(0.6);
background-color: pink;
}
| Specification |
|---|
| CSS Transforms Module Level 1 # funcdef-transform-scaley |
scaleX()scaleZ()transform<transform-function>transform-originThis page was last modified on Apr 18, 2026 by MDN contributors.
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