Css image responsive resize cover contain

#Css image responsive resize cover contain full#

This is a great time-saver when building responsive websites, with images of the most optimal dimensions for each screen size (without serving images larger than needed). Sirv can perfectly resize and crop an image to fit a container (e.g. This example will load all images on the page when they are within 50% of the height of the users viewport: You can also set images to load within a percentage of the viewport height. Or you can use a script, to apply the options to all images on the page: You can either apply the threshold setting via the data-options tag: This image loads when it gets to within 200px of the viewport edge: This means the image will probably have preloaded by the time the user gets to it (unless they scroll down the page quickly). Instead, you can set the threshold to lazy-load the image before it comes into view. This means the user might notice the image loading. Images that are out of sight are lazy-loaded as soon as they enter the viewport (when the user scrolls down the page). To disable lazy loading of your responsive images, set lazy to false: not a responsive image), set resize to false: To use lazy loading on an image with fixed width or height (i.e. To remove the fade-in effect, apply this style in your HTML page: You can adjust the speed or opacity of the effect by adding -image-loading and -image-loaded classes to your page. The loading effect smoothly fades in the image, giving a discreet feeling. To use lazy loading, add a class of Sirv to an image, like so:

Images out of view will not load unless the user scrolls down the page and they come into view. Only images within the viewable part of the page will load. This loading method fetches the image when it is needed, instead of fetching all images on page load. To help pages load as fast as possible, for the best user experience, Sirv responsive images automatically use lazy loading. This technique is ideal for full-page-width responsive images that you often see on home pages, to give a dramatic first impression. While the width will change depending on the size of the users screen, the height will remain the same:

#Css image responsive resize cover contain full#

All of Sirv's 70+ dynamic imaging options are available.ДЇor example, you can create a full width responsive image that is cropped to a certain height (in % or px).

You can add other dynamic image effects to your responsive images. It is 32% smaller at 92KB (automatically served zipped at 39KB to the browser): Reference the sirv.js file, if it's not already in your page (it's the same file used for embedding zooms/spins):ДЄlternatively, use the lighter JavaScript file named (without Sirv Spin). Add class='Sirv' to your image and use data-src instead of src, for example:Дў. To use responsive imaging, follow these two steps:ДЎ.