Text Clip Masking In CSS

Hello friends, In this post, You will learn How To Make Clip Masking In Css Text Clipping Mask Html & CSS.

 

Clipping refers to removing parts of elements defined by other parts. In this case, any half-transparent effects are not possible, it’s an all-or-nothing approach. Masking, on the other hand, allows soft edges by taking transparency and grey values of the mask into account.

 

With CSS Masking it is possible to specify another graphics element, shape or file to be used as a clipping region or a luminance or alpha mask for compositing the current object into the background. A mask is applied using the ‘ mask ‘, ‘ mask-image ‘, or ‘ mask-box-image ‘ properties.

 

We covered the use of the clip-path property for clipping using CSS, so it’s only natural that we now go over masking. Contrary to clipping, where a part of an image or element is either completely invisible or completely visible, with masking we can hide or show parts of an image with different levels of opacity.

 

Masking in CSS is done using the mask-image property, and an image has to be provided as the mask. Anything that’s 100% black in the image mask with being completely visible, anything that’s 100% transparent will be completely hidden, and anything in-between will partially mask the image.

 

Linear and radial gradients in CSS are generated images, so they can be used as the image mask. SVGs that use the mask element can also be used as the image mask.

 

Both of these things are used to hide some parts of the elements and show other parts. But there are, of course, differences between the two. Differences in what they can do, differences in syntaxes, different technologies involved, the new and the deprecated, and browser support differences.

 

And sadly there is quite a bit of outdated information out there. Let’s see if we can sort it out. Imagine a square image that is a left-to-right, black-to-white gradient. That can be a mask.

 

The element it is applied to will be transparent (see-through) where there is black in our gradient mask image, and opaque (normal) where there is white. So the final result will be an element that fades in from left to right.

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Clips are always vector paths. Outside the path is transparent, inside the path is opaque. I personally found this confusing, because oftentimes you’ll run across a tutorial on masking that uses a masking image that a white vector-looking shape on black, so it is basically doing the same thing as a clip. That’s fine, it just confuses things a bit.

 

When you clip an element using the clip-path property the clipped area becomes invisible. If instead, you want to make part of the image opaque or apply some other effect to it, then you need to use masking.

 

This post explains how to use the mask-image property in CSS, which lets you specify an image to use as a mask layer. This gives you three options. You can use an image file as your mask, an SVG, or a gradient.

 

Most browsers only have partial support for the standard CSS masking property. You will need to use the -WebKit- prefix in addition to the standard property in order to achieve the best browser compatibility. See Can I use CSS Masks? for full browser support information.

 

While browser support using the prefixed property is good when using masking to make the text on top of an image visible take care of what will happen if masking is unavailable.

 

It may be worth using feature queries to detect support for mask-image or -WebKit-mask-image and providing a readable fallback before adding your masked version.

 

The mask-image property works in a similar way to the background-image property. Use a URL() value to pass in an image. Your mask image needs to have a transparent or semi-transparent area.

 

A fully transparent area will cause the part of the image under that area to be invisible. Using an area which is semi-transparent however, will allow some of the original image to show through. You can see the difference in the Glitch below.

 

The advantage of this approach is that the mask could be applied to any HTML element, not just an image. Unfortunately, Firefox is the only browser that supports this approach. All is not lost, however, as for the most common scenario of masking an image, we can include the image in the SVG.

 

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4 thoughts on “Text Clip Masking In CSS

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