![]() ![]() ![]() This means they aren’t saved or compiled in a web-friendly way, and instead, are bloating your pages. The main reason this is happening is because multiple images are being used more frequently on web pages, and these images aren’t properly sized and optimized. Now, the average is 2MB and it’s increasing every year. Just a few years ago, the average size of a web page was 600–700K. That’s why incorporating imagery into your content is a powerful tool to use when marketing your blog.īut, if you’re not careful, images can account for over half (or more) of your web page’s total size. Images enhance a blog post, make it more sharable and set the tone and brand of your entire site.Īnd you know what? We are hardwired to respond to images. Other methods resort to using JavaScript or Browser Detection on the Server Side.They can transform a piece of text into an engaging experience while you read. Most browsers treat images and backgrounds differently, in load priority and in the way the user can interact with them. You can't stretch or shrink a background image - if you change the div's dimensions from that of the image you will stretch it in IE (due to the 'scale' property - which you can change for sake of standardness to 'crop') but you will crop it in any other browser.ģ. Unless the user has 'backgrounds enabled when printing' your image wont show up when the webpage is printed.Ģ. Obviously you need to know the width and height of your image but you can get this using getimagesize() or just by hardcoding.ġ. IE will listen to the starred items and blank out the background whilst applying it's AlphaLoader on top. The above (although not pretty) keeps the image loaded as a background for any good browser as they should ignore the starred (*) CSS items and should support Alpha PNGs natively. The easiest (although not the best) way to get around this is to use the CSS background property instead of an image src - because as of yet you can't change an image's src dynamically using currently supported CSS: so don't go thinking something very strange is happening with your PHP it's the silly browser ) The comment left by "doggz at mindless dot com" will cause a duplication in layering of the transparent image - AlphaImageLoader loads the image as if it were a floating layer on top of the element - so your image will double up. I'm using this to create a framed thumbnail image: This was not obvious to me so I thought I'd share. Getting Started Introduction A simple tutorial Language Reference Basic syntax Types Variables Constants Expressions Operators Control Structures Functions Classes and Objects Namespaces Enumerations Errors Exceptions Fibers Generators Attributes References Explained Predefined Variables Predefined Exceptions Predefined Interfaces and Classes Predefined Attributes Context options and parameters Supported Protocols and Wrappers Security Introduction General considerations Installed as CGI binary Installed as an Apache module Session Security Filesystem Security Database Security Error Reporting User Submitted Data Hiding PHP Keeping Current Features HTTP authentication with PHP Cookies Sessions Dealing with XForms Handling file uploads Using remote files Connection handling Persistent Database Connections Command line usage Garbage Collection DTrace Dynamic Tracing Function Reference Affecting PHP's Behaviour Audio Formats Manipulation Authentication Services Command Line Specific Extensions Compression and Archive Extensions Cryptography Extensions Database Extensions Date and Time Related Extensions File System Related Extensions Human Language and Character Encoding Support Image Processing and Generation Mail Related Extensions Mathematical Extensions Non-Text MIME Output Process Control Extensions Other Basic Extensions Other Services Search Engine Extensions Server Specific Extensions Session Extensions Text Processing Variable and Type Related Extensions Web Services Windows Only Extensions XML Manipulation GUI Extensions Keyboard Shortcuts ? This help j Next menu item k Previous menu item g p Previous man page g n Next man page G Scroll to bottom g g Scroll to top g h Goto homepage g s Goto searchĪfter much trial and error and gnashing of teeth I finally figured out how to composite a png with an 8-bit alpha onto a jpg. ![]()
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