*May or may not contain any actual "CSS" I agree. Here’s a CSS sprites tool I did: A word of warning though: this technique is best used by people who are well versed in photoshop and who have a strong grasp of raster based graphics in general, because without taking deliberate and precise control of transparency levels in your graphics the results may be very unpredictable and ugly. Also as someone who does a lot of work fiddling with pre-written Joomla plugins and the like, the idea of not being able to investigate an element, see its background image, create a new one (potentially of a completely different size), upload and replace in favour of sifting through a png image and bloating it with new sprites seems a bit impractical. I learned to ‘turn it off’ (outline: 0;) but then… it’s… well, off and difficult for those with accessabiltiy handicaps can’t navigate… Is there a way to just ‘make the text dissapear’ but leave it in position?? Checkout the following examples and you will see one visible difference; when you place the mouse pointer over the browser icons in non-sprite version for the first time the hover image will appear after some time, it happens because the hover image is loaded from the server on mouse hover, since the normal and hover images are two different images. http://www.spritecow.com. While I think I’m getting this gist of this, showing the image you used would help a lot more! If you closely examine the colors in the image after splicing, you’ll see that they are subtly different from what you had before. Oh and for those who think it’s just not worth it even speed wise, take my header sprite for example. Once you’ve identifies where the css is, you will simultaneously be identifying the source of the images. Using the image sprites instead of separate images will significantly reduce the number of HTTP requests a browser makes to the server, which can be very effective for improving the loading time of web pages and overall site performance. I have a problem with this..please help, thank’s. Where is the link to the css sprite generator? I was wondering if it was faster to do something like this, and come to find out, it’s way better and faster! CSS Sprites is pretty much the exact same theory: get the image once, and shift it around and only display parts of it. As rollover images are just below the default state and height of each icon is equal to 50px. A different way to do this is to just create textNodes or an empty element instead of creating a transparent image. What is the point of using img sprite rather than css sprite as img sprite will take much load time. Mailchimp: Grow sales with Customer Journey Smarts. I created a CSS Sprite Generator in PHP (CLI Mode). I taught myself ‘sprite navigation’ through your posts and videos and it works great. So I would need to use: background-position: right center; but then I cannot use it to position the sprite and it shows the whole sprite img. It’s also worth noting it’s a compressed .png so there is no image quality loss. For example, let’s say we want the image below to be added to our HTML page like a regular ol’ image: Then we’ll crop the image so that only the first icon is visible on screen: Here, the content-box of the should be 100px wide and 100px tall, but because the image extends beyond those boundaries, it’s automatically cropped for us with object-fit: none. by moving the text ‘offscreen’ FireFox creates an UGLY dotted box all the way offscreen (used to keyboard navigation). a decision I'm very happy with. That explains why I’m not seeing it right. In fact, you can do both, Just take a look at the awesome example sprite that Scott linked to below (from ask.com), which uses all kinds of X and Y positioning. Great article. While being on my laptop I had no PSD, so some serious photoshop hack work started. AlphaLoader filter doesn’t support background-position property,the backgrounds are automaticly positioned in the upper left corner. To display a single image from the combined image, you could use the CSS background-position property, defining the exact position of the image to be displayed. When the image is clicked, just change some classes which change the object-position. Wow! Let's find out. Also min-heights might be employed in the css to prevent the images collapsing when font-size is decreased by the user (not that that is so likely). CSS Sprites is pretty much the exact same theory: get the image once, and shift it around and only display parts of it. If you are Interested habe a look here: Fireworks is the only tool which can do this in a precisely manner. can take a long time to load and generates multiple server requests. Opened my eyes somewhat. Centering… holy cow… I just spent 4 hours searching the net trying to center the list in my web… no go… I just went for a ‘hack’ to put a left margin on it… Is there a way to center this list? I think it’s super super interesting. Is this website helpful to you? Which brings me to the work around I used on the one site I used this for, just give each item plenty of space so that resizing any given element doesn’t need to effect anything else. For “content” images, it’s still best to use img tag with alt attribute. To display a single image from the combined image, you could use the CSS background-position property, defining the exact position of the image to be displayed. I've used WordPress since day one all the way up to v17, Hey Chris, a differet format is what I meant – Fireworks calls it PNG8 but looking at the result image with imagemagick’s “identify” I see 4 bits for transparency. Why use CSS Sprites? I used the sprite technigue on the complex background and was shocked at the difference. To show the Internet Explorer icon we have to move its upper-left corner to the starting point i.e. http://tentonweb.com/. In the previous section we have learned, how to display an individual icon from an image sprite. I’m against services like SpriteMe, because it’s more of a static solution. Image Sprites - Simple Example. Using PNG-8 (1 bit transparency), no hack would be needed. This is one of my most favorite things about CSS. Every time an article points out a new cool browser feature an army of commenters comes to note that there is little support for it. I prefer the control of it, and you don’t run into the “I don’t have the source files” problem. I think css sprites are an interesting concept, and possibly well suited for a couple applications like backgrounds and basic button rollovers. Thanks for sharing with us. Also, does anyone know if you have to re-create/submit files to these online sprite generators, do the files have to be in the same order by their file name, so that they are in the same place and you don’t have to change all of your CSS rules. Think I’ll give this sprites thing a shot in my next design! In short, when using PNG hacks, don’t use sprites. http://caniuse.com/#feat=object-fit As an aside (and you probably all know this) but you can do the ‘sprite trick’ for older browsers (back to ie6 if you use an anchor for hover effects). It’s worth it if you’ve got the time I say, but I say especially if you are under deadlines it could cost you more than it’s worth. Not really a workaround. This reduces the overhead of having to fetch multiple images. http://www.sitepoint.com/blogs/2007/09/18/png8-the-clear-winner/. Btw, is there any way to use sprites for elements other than links, and for repeating bg? Designers should be creating static font sizes instead of “em” font sizes, so that you don’t have the background image problem. I prefer to use fireworks PNG8 for transparent images because they will work in virtually all browsers and while you won’t get alpha trans in IE6 they at least degrade nicely.
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