Website design, promotion, CGI, PHP, Java. Script scripting, and revenue earning. Website design, promotion, programming and revenue making. Featured Articles. Listed here are a selection of the articles available on thesitewizard. Head First Html Css Javascript Pdf Tutorials' title='Head First Html Css Javascript Pdf Tutorials' />Click the More link in each section for the rest. A more complete list can be found in the Site Map. Getting Started. Domain Name Issues. Website Revenue. Web Design Usability. Web Design Compatibility. Web Design General. Search Engine Promotion. Head First Html Css Javascript Pdf Tutorials' title='Head First Html Css Javascript Pdf Tutorials' />General Website Promotion. Web Hosting Issues. Microsoft Expression Web Tutorials. Dreamweaver Tutorials. Blue. Griffon Tutorials. Kompo. Zer Tutorials. Other WYSIWYG Web Editor Tutorial Series. 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December 2. 01. 68 December 2. November 2. 01. 62. November 2. 01. 61. November 2. 01. 68 November 2. October 2. 01. 6New article. Expression Web Tutorial How to Design a Website with Microsoft Expression Web. Microsofts free web editor is a sophisticated WYSIWYG web editor with many features usually only found. This tutorial series takes. Expression Web. 1. October 2. 01. 6Free Java. Script Minifiers Minimizers, Obfuscators and Compressors. Free Image Pop Up Java. Scripts Where Image Overlays Current Web PageFree Royalty Free Stock Photos. Free Online Web Editors and Programmers Editors. Free PHP Compilers native code,. NET and Java bytecode compilers. Free Embedded Web Video Player ScriptsCode. Free ImagePhoto Slide Show Java. Script. Free GUI Builders, Application Builders and Rapid Application Development RAD Software. Free Partitioning Software Copy, Create, Move, Resize, Convert, Undelete Partitions. Free DVD Authoring and Creation Software Tools. Free CD and DVD Burners and Copying Software. Hard Disk Backup and Restore, Hard Disk Image and Cloning Utilities. Copyright 2. 00. Christopher Heng. All rights reserved. How. To. Haven are trademarks of Christopher Heng. This page was last updated on 3. October 2. 01. 7. CSS Sprites What They Are, Why Theyre Cool, and How To Use Them. This article has been revised and re written several times since its very first publication in 2. The most recent revision was done by Flip Stewart in January 2. What are CSS Sprites Spoiler alert they arent fairies that write your stylesheets for you. I wish. In short CSS Sprites are a means of combining multiple images into a single image file for use on a website, to help with performance. Sprite may seem like a bit of a misnomer considering that youre creating a large image as opposed to working with many small ones, but the history of sprites, dating back to 1. To summarize the term sprites comes from a technique in computer graphics, most often used in video games. The idea was that the computer could fetch a graphic into memory, and then only display parts of that image at a time, which was faster than having to continually fetch new images. The sprite was the big combined graphic. CSS Sprites is pretty much the exact same theory get the image once, and shift it around and only display parts of it. This reduces the overhead of having to fetch multiple images. Why use CSS Sprites It may seem counterintuitive to cram smaller images into a larger image. Wouldnt larger images take longer to load Lets look at some numbers on an actual example Image. File Size. Dimensionscanada. KB2. 56 x 1. 28usa. KB2. 56 x 1. 35mexico. KB2. 56 x 1. 47. That adds up to a total of 1. KB to load the three images. Putting the three images into a single file weighs in at 1. KB. The sprite ends up being 1. KB larger than the three separate images. This isnt a big difference, but there needs to be a good reason to accept this larger file. While the total image size sometimes goes up with sprites, several images are loaded with a single HTTP request. Browsers limit the number of concurrent requests a site can make and HTTP requests require a bit of handshaking. Thus, sprites are important for the same reasons that minifying and concatinating CSS and Java. Script are important. How do you use CSS Sprites Heres an example sprite, with three different countries flags combined into a single image You set the same background image on several CSS classes and set the background position and dimensions of the individual classes to display a single portion of the sprite. Heres some code that demonstrates the concept. If youre thinking that there has to be a way to automate this so that you arent manually creating these sprites and then adjusting your stylesheet to match, youre right, and youre in luck Generate Sprites with Grunt Gulp Node. If youre using Grunt, Gulp, or Node in general, css spritenow called sprity is a wonderful node package that creates sprites from a glob of images. Sprity has a lot of great features including formatting output as PNG, JPG or Data URIs of those, and stylesheet generation in CSS, LESS, Sass, and Stylus. To compile sprites via command line, install css sprite globally with npm install sprity g. Then, to generate sprites and the corresponding stylesheet, run sprity. For more information on using css sprite with Grunt or Gulp or many other environments, head over to the projects repository on Git. Hub. Generate Sprites with Compass. Generating sprites with Compass takes some additional setup and maintenance, but if youre already using Compass, it fits in well with your existing workflow. Start by creating a directory within your images directory yes, it does need to be inside your images directory to work with a name that corresponds to the sprites youd like to create. Ensure that the images youre converting to sprites are PNGs and place them in your new directory. Im creating flag sprites, so Ive named my directory flags and placed three PNGs in the directory. In a new SCSS file that Ive called flags. Compass sprite making tools, glob import the PNGs to be converted to sprites notice that the path here does not include images, and then generate the CSS for the sprites. Be mindful that the include statements middle word needs to match the directory in the line before it. This is a fairly simple process for generating sprites, but it has a few drawbacksoddities The generated CSS does not include widths or heights for the sprites. There is no shared class between the sprites the background image is applied to each class. Generating Sprites with Image. Magick. Image. Magick can be used to create a spritesheet from the command line with the following commands convert This will take all the PNG files selected by the glob and concatenate them into a single file, but will not create the corresponding stylesheet. If you use Image. Magick to create your sprites, you may want to read the section below on using Sprite Cow. Using Sprite Cow with your Sprites. Sprite Cow is a hosted tool for generating a stylesheet corresponding to your sprites. It doesnt make the sprite for you, it just helps you get numbers you need to use the sprite the width, height, and background position of individual parts of the sprite. It boasts 2x image compatibility and a simple interface for quickly designating which areas of the sprite make up each image to create CSS for. You just click the part you need and it gives you the CSS you need. How Much Does Onecnc Software Cost'>How Much Does Onecnc Software Cost. Generate Sprites with Spritepad. Spritepad is another hosted solution for creating sprites. With Spritepad, you upload individual images, position them however youd like, and the CSS is updated in real time. When youre done, download the image and copy the CSS over to your project. Generate Sprites with Sprite. Me. Sprite. Me is a bookmarklet that generates a sprite based on what it finds on the current page. So essentially youd develop without using sprites at all, then use this to sprite things together at the end. Heres a workflow explaining how that would work. Should my sprites be horizontal or vertical One option is neither. Compact them into a grid, making the smallest size, dimensionally that you can. The dimensional size of an image plays a role in how much memory the image will take up when being used, so the less the better. If you end up laying out your own sprite, Sprite Cow is a good tool to help with the CSS generation part. If, for simplicity, youre going to pick one or the other, one way to do that is to look at the largest width and the largest height of your image files. If the largest width is greater than the largest height, the sprite sheet should be arranged horizontally. If the largest height is greater than the largest width, vertically. If youre using a generation tool, they will generally make this choice for you. In some situations, it may actually make sense to lay out a sprite diagonally. This can make it possible to use a sprite in an area of unknown width and height, which is pretty cool. Although another possible way to get around that is using a pseudo element. Alternatives. There are a few alternatives to CSS sprites, but, as you might expect, they each have their own benefits and drawbacks. Data URIs. Data URIs allow you to embed the image data directly into a stylesheet. This avoids additional HTTP requests for images, making it essentially the same thing as a sprite, without the fancy positioning. Icon Fonts. Icont fonts are similar to sprites in that the achieve the same thing combining multiple images into a single request.