CSS - change image size on hover

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In this article, we would like to show you how to change the image size on hover event using CSS.

Quick solution:

img {
  width: 50%;
  transition: 1s;

img:hover {
  width: 60%;

The :hover CSS pseudo-class is triggered when the user hovers over an element with the cursor (mouse pointer) changing the element style to the one specified within curly brackets.


Practical example

In this example, we change the img size on hover event with the following steps:

  1. in img style, we define the image size at the beginning - 50%. We also use the transition property to smoothly resize the image over 1 second,
  2. we use img:hover pseudo-class that actually changes the width property on the hover event.
// ONLINE-RUNNER:browser;

<!doctype html>

    body {
      height: 200px;

    img {
      width: 50%;
      transition: 1s;

    img:hover {
      width: 60%;

  <img src="" />


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