Entries Tagged as 'Images'

Cross-Browser Animated Image Masking (Even in IE) Using polyClip.js

January 14th, 2013 by zoltan · No Comments

dad I first created polyClip.js so I could combine the lossy compression algorithm of JPEGs with the ability to have a transparent area that PNGs allow. The result works well in all browsers, but can polyClip.js be fast enough to change the clipping area on-the-fly and even animate it at reasonably fast speeds with CSS3-style transformations on the clipping areas. The answer is a resounding yes and it is really fast even in older IE as well. This article will discuss in doing this with polyClip and a related library, Silk.js to do battery friendly and CPU efficient HTML5 animations.

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Tags: animation · canvas · HTML5 · Images · JavaScript · jQuery · requestAnimationFrame · transform

Cross Browser CSS cursor Images In Depth

December 21st, 2011 by zoltan · 15 Comments

When used properly, custom CSS cursors can add a little bit of polish to your web sites and applications. However, doing this in a cross browser way can be a little confusing unless you know all the gotchas, and this article will go into depth about them. We will also explore issues such as when to use custom cursors, performance, what makes good cursor design, cursor file formats, and cursor size.

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Tags: CSS · CSS3 · cursor · Images

Clipping JPEG Images Into Non-Rectangular Polygons Using polyClip.js

October 29th, 2011 by zoltan · 24 Comments

Up until now, if a developer needed to clip an image in a non-rectangular shape, it was necessary to save the image as a PNG with an alpha channel. If the image is a photograph, the file-size balloons up to unacceptable levels. My new library, polyClip.js, allows developers to clip these images using photograph friendly JPEGs instead. This article guides you step by step on how to use it yourself.

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Tags: canvas · HTML5 · Images · JavaScript · jQuery · Uncategorized · VML

Optimizing PNG Files, for both Web and Print.

September 16th, 2009 by admin · 2 Comments

Optimizing images is not only important for web applications, it is also important for reducing the size of print documents. This article will show how to optimize images in the PNG format.

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Tags: Images