Gif as wallpaper css html

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• Improve Animated GIF Performance With HTML5 Video
• Limitations of HTML Email
• Please wait while your request is being verified...
• Make an Image Fly Across the Screen
• GIF image as background
• Showing a CSS-Based Loading Animation While Your Site Loads
• background-position
• animated-backgrounds
• The freeCodeCamp Forum

Improve Animated GIF Performance With HTML5 Video

This article was published on Nov 24, , and takes approximately 27 minute s to read. SVG can do much more than display static images. Its animation capabilities are one of its most powerful features, giving it a distinctive advantage over all other image formats. But this, of course, only applies to images that are good candidates for SVG, such as:. Of course, if you have an image that is better suited for the raster format—such as a photograph or a very complex vector illustration that would normally have a very big size as an SVG , then you should use a raster image format instead.

Generally speaking, the images listed above are usually perfect candidates for SVG. However, last week, a link popped up in my Twitter timeline that linked to a set of icons that are animated as GIFs. SVGs can indeed replace GIFs in many places, just like they can replace other raster image formats for candidates like those mentioned above.

The ability to animate SVG images is what gives it this advantage and ability. And this applies to more than just animated icons. An SVG image will look super crisp on any screen resolution, no matter how much you scale it up. Whereas GIFs—a raster image format—do not. Zooming into the page a few times will cause the image to be pixelated and the edges and curves of the elements inside to become jagged, as you can see in the image below:.

Whereas if you check the SVG demo out and zoom into the page, the SVG content will remain crisp and clear no matter how much you zoom in. Of course, the higher the image resolution, the bigger the file size will be. Also, using a high-resolution GIF and serving it at a smaller size for mobiles is bad for performance.

When you create GIF-animated icons or images, their dimensions are fixed. With SVG, size is free, and clarity is a constant. You can create a small SVG and have it scale up as much as needed without sacrificing image clarity. Perhaps the number one deal-breaker with GIFs is the way transparency is handled, especially when the image is displayed on a background other than a white background.

This is an issue that is most likely to emerge when using GIF icons whether animated or not , since icons are usually created with transparent backgrounds.

For example, take the following circle with a stroke, created as both an SVG image left and a GIF with a transparent background right. The problem is evident as soon as you look at the two images: the GIF circle has grey fringes around its stroke. Here is a screenshot showing the problem on the right :.

This happens because transparency in GIF images is binary. This means that each pixel is either on or off ; a pixel is either transparent or fully opaque. This, in turn, means that the transition between the foreground color and the background color is not as smooth, and results in artefacts caused by inadequate sampling frequency, commonly known as aliasing.

When a line is not completely straight, it causes some pixels around the edges to be partially transparent and partially opaque, so the software needs to figure out what color to use for those pixels. Aliasing is usually countered with anti-aliasing , but that is not as simple when transparency is binary:.

There is a severe interaction between anti-aliasing and binary transparency. Because the background colour of the image is mixed in with the foreground colours, simply replacing a single background colour with another is not enough to simulate transparency. There will be a whole host of shades which are mixtures of background and foreground colours [ The effect in this case is a white halo around objects, because the original image was anti-aliased to a white background colour.

The solution to this problem is variable transparency, commonly known as the alpha channel, which allows for varying degrees of transparency and hence a smoother transition between the foreground and background color, which is not what is available in GIF; thus, the halo effect problem.

Images with the halo effect usually look best when used with white backgrounds; any other high-contrast background color will make the artefact visible. Why might you not be able to see the fringes on smaller sizes? The answer is: the browser smoothes the edges as a part of the image resize process. Does this mean that you can utilize this to get rid of the fringes and still use a GIF? Yes, you can. But to do that, you have to use a GIF that is much bigger than the size you want to render it at, and then resize it.

This also means that you will be serving your users images that are much bigger than they need, therefore taking up more of their bandwidth on mobile, as well as hurting the overall page size and performance. They are animated by showing a series of images—one for each frame—sequentially, in a fixed manner, at a fixed pace. You know, the way GIFs just work.

And how much control over the animation timing will you get afterwards? Unless you make sure you have at least 60 frames—that is, 60 images— per second to create your GIF, the animation will not look smooth. Whereas with SVG, achieving smooth animations is much easier and simpler by taking advantage of browser optimizations. Now, what if your animation plays for at least 5 ot 6 seconds? What if it plays for much longer?

The rectangle in both images changes color over the course of six seconds. With CSS, you can reverse the animation using the alternate animation direction value. But with GIF, you will need to work on your number of frames and probably end up doubling it to make this happen; this will, of course, also increase the size of the image as well. I used ezgif. Other tools also exist; gifsicle is one of them.

The file size dropped down to There are many options you can choose from when optimizing GIF images. You can also optimize it by removing every nth frame; that can reduce the file size even further, but at the cost of the animation not being smooth anymore. You can learn more about these options on the ezgif. If you do end up with a size equal to that of the GIF, the other benefits of SVG will tip the scale and you will be getting more out of it. Segment is 2.

There can be exceptions, so you should always test. Note: SVG Performance is not at its absolute best today, but this will hopefully change in the future. Libraries like GreenSock also offer impressive performance as well. Result: There will be a compromise that needs to be made. Either the GIF animation is smooth and the overall file and page size and performance is negatively affected, or the GIF animation will suffer with less frames.

One form of performance is risked in both scenarios. SVG images take advantage of the browser optimizations when animating elements. Even though browser performance on SVG elements is still not at its best, animation will still perform better without having to make page performance compromises.

SVG file size is still very reasonable, if not very small, compared to GIFs, even when certain animation libraries might be required to create cross-browser animations. You will need to use a graphics editor such as Photoshop or Illustrator or After Effects, to name a few. Thanks to my designer friend Stephanie Walter for the PS animation tips.

What happens if you want to change your animation timing? What if you want to change the entire effect and have the elements in your image do something completely different? You will need to recreate the image or icon all over again. Any change requires you to jump into the graphics editor and work with frames and a frame-based UI.

In the previous section, we focused on the performance of the animation itself. In this one, I want to shed some light on the page performance as a whole and how it is affected by the image format choice you make. Fact: The bigger the file size, the more the negative impact on page load time and performance. In that talk, I provided a real-world example of a real-world web page that took advantage of what SVG has to offer and reaped the benefits: the Sprout homepage.

The Sprout homepage has two animated images that were initially created and displayed as GIFs. In his article, Mike shares some interesting insights on their new page performance as a result of making the switch to SVG:.

This chart, and one other animation on Sprout, were initially GIFs. The Sprout chart is a perfect candidate for SVG. There is no reason to animate it by converting the animation into a GIF recording, when SVG can bring so much more benefits.

Jake Archibald realizes the power of SVG animations too, and uses them to create and animate interactive illustrations to complement his articles. His Offline Cookbook article is an excellent example and an excellent article, by the way.

Could he have used GIFs to do that? Of course. But given the number of images he used, the GIFs could have easily increased the overall page size to a couple or few megabytes, with each GIF being at least hundreds of kilobytes in size; whereas the entire web page currently weighs at KB only with all the SVG images embedded inline , because you can reuse elements in SVG , so any repetitive elements will not only cause the entire page to gzip much, much better , but for each page, the overall size of the SVGs becomes smaller.

I will rest my case about page load and performance here. But it is still important to note that there can be exceptions. Even though we have many ways to provide fallback for non-supporting browsers —and current browser support should not be hindering anyone from using SVG, the fallback images, if provided as PNG or JPG, are going to be static, animation-less. Of course, you can always provide a GIF as a fallback to SVG, but the previously-mentioned considerations and disadvantages should be kept in mind.

This is simply how the human brain works. This is also one of the reasons ad banners are so focused on—and built with—a strong focus on animation. This is also why animated ad banners are extremely annoying. As a matter of fact, for some people it can become more of an annoyance, as continuous motion can literally make some people feel ill.

But what if motion does more than just annoy you? What if it also makes you ill? As animated interfaces increasingly become the norm, more people have begun to notice that large-scale motion on screen can cause them dizziness, nausea, headaches, or worse.

Limitations of HTML Email

Parcel has built in support for resizing, converting, and optimizing images. Parcel includes an image transformer out of the box, which allows you to resize images, convert them to a different format, or adjust the quality to reduce file size. This can be done using query parameters when referencing the image, or using a configuration file. The image transformer relies on the Sharp image transformation library, which will be automatically installed as a dev dependency into your project when needed.

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Happy new year, everybody! Today we will create a CSS-only fullscreen background image slideshow. Note that this will only work in browsers supporting CSS animations. It will be fixed and we will stretch it over the viewport. The opacity is set to 0. The animation for each span will last 36 seconds and run an inifinite number of times. Now, we will define the background images for all the spans and the animation delay, so that each following slideshow image and title appear after 6 second of the previous one:. Each span will have an animation time of 36 seconds. Now, why those values? We want each image to be visible for 6 seconds and we know that at the end of a cycle, we want the first image to show again.

Make an Image Fly Across the Screen

When building an image-heavy website, like an e-commerce portal or a travel website, images serve a crucial role in narrating the story. Rich graphics help users in exploring content with ease. One of the tools designers use to create engaging visuals is adding effects like changing the image to grayscale, rounding the corners, etc. But manual graphic editing tools don't work when we have to do this for hundreds of thousands of images. In that case, web developers use CSS to serve cool image effects without any significant dependency on graphic designers.

GIF image as background

Did you know that you can use CSS to create beautiful animations and interesting effects? From simple scrolling animations to complex environments built entirely of code, these CSS background effects can add a lot of personality to your website. What if you could use CSS background effects created by others for free? Sites like CodePen were made to host open source or other freely-licensed code, which means you can use it in your own projects with few-to-no stipulations. This is also helpful for designers who want to learn CSS or pull off a similar, but personalized look.

Showing a CSS-Based Loading Animation While Your Site Loads

The above code has been tested in the following browsers. Home Categories. Net using jQuery and JavaScript. You can download it from here. Download and install Northwind Database. HTML Markup.

background-position

You can use the built-in keyframe at-rule, which controls the steps of an animated sequence by defining the style of each keyframes. To use keyframes, you simply create a keyframes rule and give it a name. That name is then used as a property to match an animation to its keyframe declaration. CSS Theming for Professionals.

animated-backgrounds

This is not actually "animating" anything. It's about switching images using CSS on mouse hover. Now that you know, you can either click away or keep reading. To do that, first of all, you need two images.

The freeCodeCamp Forum

Setting a background image in Bootstrap can seem troublesome, especially for novice web developers. Thanks to this tutorial, you will not only learn how to use this functionality without any problems, but you will also learn advanced tricks that will allow you to create truly amazing projects with unconventional design. Also, try these ready-to-use templates to see how you can implement the background image in a real project. This is a basic example of a full-page background image. If you need a background image with different settings have a look at other sections of this docs. That's because we need to provide a height to this HTML element.

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