Creating a sleek grayscale effect when hovering with CSS is both simple and effective

My website features a grayscale logo that smoothly transitions to color upon hover. However, I am experiencing some issues with the smoothness of this transition when using CSS.

Here is my current code:

<img alt="TT ltd logo" src="./img/tt-logo.png" class="tt-logo" />

   <style>
    img.tt-logo {
      filter: grayscale(1);
      transition: grayscale 0.5s;
    }

    img.tt-logo:hover {
      filter: grayscale(0);
    }
   </style>

Answer №1

Here is an alternative approach you can take:

 img.tt-logo {
   -webkit-filter: grayscale(100%);
   -moz-filter: grayscale(100%);
   filter: grayscale(100%);
   transition: all 0.5s ease;
 }

 img.tt-logo:hover {
   -webkit-filter: grayscale(0%);
   -moz-filter: grayscale(0%);
   filter: grayscale(0%);
 }

Each image comes with its own alt attribute, which means you can target them without using the img.class selector:

 img[alt="TT ltd logo"] {
   -webkit-filter: grayscale(100%);
   -moz-filter: grayscale(100%);
   filter: grayscale(100%);
   transition: all 0.5s ease;
 }

 img[alt="TT ltd logo"]:hover {
   -webkit-filter: grayscale(0%);
   -moz-filter: grayscale(0%);
   filter: grayscale(0%);
 }

In this scenario, the use of the class attribute is redundant.

Answer №2

When it comes to animating filters, the process can be quite demanding on the system and may impact performance in certain browsers.

An alternative approach for achieving smoother performance is to animate the opacity of a grayscale image to gradually unveil a full-color image below it.

For a visual demonstration of this technique, check out this example.

Answer №3

When it comes to browsers today, you have the option of using a simple and concise example like the one below. Modern browsers now support the grayscale CSS attribute. If you're only changing one attribute during a transition, it's best to focus on that specific attribute instead of all of them.

img {
    grayscale: 1;
    transition: filter .23s ease-in-out;
}

img:hover {
    grayscale: 0;
}

Sources:

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