pngcrush is an excellent optimizer for png images, simple and fast, highly recommended. Basically any time before you post a PNG on the web, you should run it through PNGCrush. It’s a command line utility, there’s a quick way to integrate pngcrush in windows explorer. (note to self: I actually wrote a wordpress plugin to […]

The slides from my talk at the Velocity conference » Download | View | Upload your own

Today our family went to the yearly photo session with the girls. We took one shot that can be looked normally, as well as upside down, so I was wondering can you flip an image using a canvas tag. Turns out, yes, you can and it’s pretty easy. » Demo is here. How to load […]

This is very flattering: Greg Houston took my script for DIY canvas pie and added tooltips and better colors logic. Here’s the result, it’s really nice, built with some MooTools. The tooltips are not supported in <canvas> but Creg used an image that overlays the pie and set the tooltips with an image map. Clever, […]

If case you haven’t noticed – YUI Charts hit the streets. As with everything new, it’s best shown and understood by example. So here’s the simplest example of using a pie chart. Basically I took the example from the YUI page, changed all the paths to point to yahooapis.com (where YUI is hosted for free) […]

This post is a demo of what the imagefilter() PHP function can do for you. The Original imagefilter() called with different filter constants Filter: IMG_FILTER_BRIGHTNESSCode to reproduce: <?php $image = imagecreatefrompng(‘nathalie.png’); imagefilter($image, IMG_FILTER_BRIGHTNESS, 5); imagepng($image, ‘img_filter_brightness_5.png’); imagedestroy($image); ?> Filter: IMG_FILTER_BRIGHTNESSCode to reproduce: <?php $image = imagecreatefrompng(‘nathalie.png’); imagefilter($image, IMG_FILTER_BRIGHTNESS, 50); imagepng($image, ‘img_filter_brightness_50.png’); imagedestroy($image); ?> Filter: IMG_FILTER_BRIGHTNESSCode to reproduce: <?php $image = imagecreatefrompng(‘nathalie.png’); imagefilter($image, IMG_FILTER_BRIGHTNESS, 100); imagepng($image, ‘img_filter_brightness_100.png’); imagedestroy($image); […]

» Download here This is my first PEAR release and I was actually surprised how easy it is to package and roll out a release. So you have your local copy of the CVS repository that contains the scripts you want to release as part of the package. In order to release, you need package.xml, […]

Today I saw a post at digg.com on image resizing with PHP and there was quite a discussion. Let me share the laziest way (that I know of) how to do it – PEAR::Image_Transform is all it takes. Here goes: <?php require_once ‘Image/Transform.php’; $i =& Image_Transform::factory(”); $i->load(‘test.jpg’); $i->fit(100,100); $i->save(‘resized.png’, ‘png’); ?> In addition, the Image_Transform […]