Transition the image to a see-through effect, resembling a gradient

Is it possible to have an image fade to transparency using CSS3? I know I can achieve this effect with a PNG image, but changing the transparency levels requires graphic designer intervention each time. Can CSS3 offer a solution without having to change images?

I have tried applying gradients to JPG and PNG files, but I can only see through them if the PNG file is already transparent. This renders the CSS gradient useless. Is there any way around this issue?

I have been searching online for a solution, but I may not be using the right keywords or maybe such an effect is simply not feasible.

Update 1:

I believe code speaks louder than words. I am looking to create something like this (although the syntax is incorrect):

background: linear-gradient(to bottom, rgba(url('splash_bottom3.png'), 0.0), rgba(url('splash_bottom3.png'), 1.0));
cssgradient

Answer №1

If you desire to achieve this look:

Follow these steps:

<html>
  <style type='text/css'>
    div, img { position:absolute; top:0; left:0; width:250px; height:250px; }
    img {
      -webkit-mask-image:-webkit-gradient(linear, left top, left bottom, from(rgba(0,0,0,1)), to(rgba(0,0,0,0)));
      mask-image: linear-gradient(to bottom, rgba(0,0,0,1), rgba(0,0,0,0));
    }
  </style>
  <body>
    <div>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Morbi sit amet porttitor massa. Morbi eget tortor congue, aliquet odio a, viverra metus. Ut cursus enim eu felis sollicitudin, vitae eleifend urna lobortis. Mauris elementum erat non facilisis cursus. Fusce sit amet lacus dictum, porta libero sed, euismod tellus. Aenean erat augue, sodales sed gravida ac, imperdiet ac augue. Ut condimentum dictum mauris. Donec tincidunt enim a massa molestie, vel volutpat massa dictum. Donec semper odio vitae adipiscing lacinia.</div>
    <img src='https://i.sstatic.net/8vPQgiTK.jpg' />
  </body>
</html>

Answer №2

If your intention is to smoothly transition to the background color (white, specifically) you can refer to this functioning demo:

http://jsfiddle.net/ab21cdef/

The CSS code for the image container div includes:

background: -moz-linear-gradient(top,  rgba(255,255,255,0) 0%, rgba(255,255,255,1) 80%);
background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,rgba(255,255,255,0)), color-stop(80%,rgba(255,255,255,1)));
background: -webkit-linear-gradient(top,  rgba(255,255,255,0) 0%,rgba(255,255,255,1) 80%);
background: -o-linear-gradient(top,  rgba(255,255,255,0) 0%,rgba(255,255,255,1) 80%);
background: -ms-linear-gradient(top,  rgba(255,255,255,0) 0%,rgba(255,255,255,1) 80%);
background: linear-gradient(to bottom,  rgba(255,255,255,0) 0%,rgba(255,255,255,1) 80%);
filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#00ffffff', endColorstr='#ffffff',GradientType=0 );

Answer №3

Update as of 2021: The use of 'mask-image' is now partially supported. Specifically, the mask image (in this case a linear-gradient) is applied to the parent element (.image_preview_container). In this example, the children elements (.image_preview) gradually fade into transparency starting at 50% and are completely transparent at 100%. Other lengths such as 'px' can also be used.

This functionality has been tested in Firefox and may work in other browsers as well. If you encounter any issues with a different browser, please let me know in the comments.

CSS:

.image_preview_container {
  mask-image: linear-gradient(to right, rgba(0, 0, 0, 1.0) 50%, transparent 100%);
}
.image_preview {
  background-image: url("IMAGE LOCATION");
}

HTML:

<div class="image_preview_container">
    <div class="image_preview"></div>
</div>

In relation to the original question:

CSS:

.parent{
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 1.0) 50%, transparent 100%);
}
.child{
  background-image: url("splash_bottom3.png");
}

HTML:

<div class="parent">
    <div class="child"></div>
</div>

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