What is the best way to turn the visible section of a PNG image with a transparent background into a clickable link?

I wanted to link a .png image with a transparent background on my website.

After trying the following HTML:

<a href="index.html">
    <img border="0" src="smiley.png" alt="smiley" width="150" height="150">
</a>

and CSS:

a
{
    text-decoration: none;
    color: inherit;
}

The issue remained as the entire image was clickable, including its transparent background.

Below is an example of what I am aiming for:

***Disclaimer: The image used in this demonstration is purely for illustrative purposes. I can confirm that my actual picture has a transparent background.***

How can I make only the visible part (smiley face) of my image clickable as a link?

htmlcss

Answer №1

One approach for the given image is to utilize an image map featuring a circular active area.

<map id="ImageMap0" name="ImageMap0">
    <area alt="" coords="30, 32, 30" href="http://www.link.com" shape="circle" />
</map>
<img src="http://placehold.it/64x64" alt="" usemap="#ImageMap0"/>

Answer №2

To create rounded corners on images and make them circular, apply the css property border-radius: 50%;

Answer №3

Consider utilizing the mapping technique as shown below:

<map name="imgmap">
<area shape="smiley" coords="x,y,radius" href="link.html" alt="img_alt">
</map>

Answer №4

If you're looking to incorporate CSS3 into your design, I stumbled upon this helpful article that provides insights and a great example

While I didn't extensively test it out, feel free to experiment with it.

CSS

.circle {
    background: #CCCCCC;
    /* Additional cross-browser css may be required for border-radius */
    border-radius: 100px;
    color: #FFFFFF;
    display: block;
    float: left;
    font-size: 20px;
    height: 200px;
    line-height: 200px;
    margin-right: 30px;
    text-align: center;
    width: 200px;
}
.circle-border {
    background: #CCCCCC;
    border: 1px solid #999999;
    /* Additional cross-browser css may be required for border-radius */
    border-radius: 100px;
    color: #FFFFFF;
    display: block;
    float: left;
    font-size: 20px;
    height: 199px;
    line-height: 200px;
    margin-right: 30px;
    text-align: center;
    width: 199px;
}

HTML

<a href="#" class="circle">BUTTON</a>
<hr style="clear:both;float:left;height:1px;width:100%;" />
<a href="#" class="circle-border">BUTTON</a>

Here's the revamped version on JSFiddle

Answer №5

You can achieve the same effect without using an image map. I experimented with 2 <div> elements and it worked perfectly. Simply place the smiley face along with another <div> containing the attribute onclick="window.open('yoururl')" inside a main <div>. Ensure both <div>s are circular and invisible.

HTML:

<div id="maindiv">
<img src="smiley.png" alt="" id="smiley"/>
<div id="LinkArea" onclick="window.open('https://google.com')"></div>
</div>

CSS:

#maindiv {
height: 150px;
width: 150px;
background-color: rgba(0,0,0,0);
border-radius: 100%;
z-index: 2;
position: absolute;
top: 0;
left: 0;
}
#smiley {
height: 150px;
width: 150px;
z-index: 1;
}
#LinkArea {
height: 150px;
width: 150px;
background-color: rgba(0,0,0,0);
border-radius: 100%;
cursor: pointer;
z-index: 3;
position: absolute;
top: 0;
left: 0;
}

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