Adaptive Images
The landscape of web continues to change as we get more and more devices that we need to support. One concern when creating websites that should accommodate all screen sizes is image size. The acceptable size for an image is not the same across devices, so we usually end up compromising image size and quality on all devices; not the optimal solution, of course. Enter a solution called Adaptive Images, a PHP / .htaccess based solution for detecting screen size and delivering optimally sized images for the user's device.
Adaptive images provides an outstanding set of instructions for customizing the images generated by PHP's GD library, so you aren't stuck with rubbish images. Do yourself a favor and check out Adaptive Images -- it could be the perfect solution for your website imagery needs.
![JavaScript Promise API]()
While synchronous code is easier to follow and debug, async is generally better for performance and flexibility. Why "hold up the show" when you can trigger numerous requests at once and then handle them when each is ready? Promises are becoming a big part of the JavaScript world...
![5 Ways that CSS and JavaScript Interact That You May Not Know About]()
CSS and JavaScript: the lines seemingly get blurred by each browser release. They have always done a very different job but in the end they are both front-end technologies so they need do need to work closely. We have our .js files and our .css, but...
![Editable Content Using MooTools 1.2, PHP, and MySQL]()
Everybody and their aerobics instructor wants to be able to edit their own website these days. And why wouldn't they? I mean, they have a $500 budget, no HTML/CSS experience, and extraordinary expectations. Enough ranting though. Having a website that allows for...
![CSS Transforms]()
CSS has become more and more powerful over the past few years and CSS transforms are a prime example. CSS transforms allow for sophisticated, powerful transformations of HTML elements. One or more transformations can be applied to a given element and transforms can even be animated...
This is the next BIG thing … I believe!
Will this method work with Joomla CMS sites?
It should — you’ll need to do your research about .htaccess though to make sure you don’t break Joomla.
One thing I noticed with this… it says the page loads a tiny bit of JavaScript first and creates a cookie with window size. That cookie is not going to be able to be read until the second page load. So this idea won’t work for the first time a visitor sees your site. Am I wrong?
You’re wrong ;)
If you include the script from an external file you’re right – because the time taken to fetch the external file is more than it takes to continue loading the HTML. But, if you have the code in the head (it’s only one line, and is more efficient embedded anyway), then the cookie actually gets set immediately, before the rest of the HTML has finished being loaded.
Try it – go visit http://adaptive-images.com on a large screen. If you see large images it worked, because if there isn’t a cookie set it delivers the mobile resolution, which are much smaller.
Here an alternative solution for adaptive images: http://litesite.org/holygrail/stage2/