Javascript background image size In order to have lazyloaded images I just Apr 30, 2024 · Uncover the secret to perfect full-width background images! Discover troubleshooting tips with JavaScript and frameworks for a captivating user experience. Show demo I host Heimdall under Docker using an image from LinuxServer. I tried background:url(x); but it didn't work. On the desktop version, the background image uses background-size: cover; to fill the width and height of the < Aug 15, 2017 · I had a background image with background-size: cover and over that another element with clipping mask that was applying a filter: invert() effect. gif); is allowed. com/course/css-hover-animation-effects-from-beginners-to-expert/?referralCode= Mar 20, 2019 · I'm using the following code to enlarge a background image (without exceeding the limits of the containing object). Then use the following background properties to center and scale the image perfectly: Aug 31, 2023 · Dynamic Background Changer project. . Jun 26, 2014 · I am a javascript newbie I'm trying to write a function that grabs a random image from a directory and sets it as the background image of my banner div. Find some ways of stretching the image to fit the div container. Mar 8, 2025 · However, setting a background image that perfectly fits your screen can be a challenge, especially when dealing with different screen sizes and resolutions. backgroundSize = "auto | length | percentage | cover| contain |initial | inherit" Return Values: It returns a string value, which represents the background-size property of an Apr 25, 2024 · This tutorial will walk through a simple example of how to resize an image in Javascript. clientHeight: We can access the inner height of an element with this property. clientWidth properties are used. Slide Backgrounds Slides are contained within a limited portion of the screen by default to allow them to fit any display and scale uniformly. I think just using an img element and scaling it on hover would be a little easier. Actually, you CAN affect the background size in javascript like so: Check out this fiddle: http://jsfiddle. Aug 9, 2022 · The Style background property in HTML DOM is a short hand property used to set or return the background of an element. Every time the page is loaded I would like the background image to change from a select A Background Image can be used for branding or watermarking a chart. Aug 4, 2018 · Here's a minimal viable solution showing how to absolutely-position an element based on a full-width (background-size: 100% auto) background. The page loads and the background ha May 26, 2015 · I'm trying to change the image src depending on the screen size using media queries. This project will create a web page that cycles through captivating background images at a set interval. I'm setting the font-size of the element to 1vw (1/100th of the width of the viewport) and then calculating its left/top position and width/height size in em units, which become equivalent to a multiple of that 1vw. See full list on tutorialspoint. The canvas can be any size and can be resized at any time. centered element in sync with the main background. I tried this solution enter link description here but it's not working So if you want the image to keep it's initial dimensions you need to have set an "auto" for either width or height e. js to elevate your web design now! Apr 17, 2017 · Responsive background images with JavaScript In this post, we develop a JavaScript technique to position and scale a background image so that the subject matter is optimally placed at a target area of the browser viewport, no matter the device orientation or window size. The jS file is separate from the HTML page. Changing a background image in JavaScript involves modifying the style property of an HTML element to update its backgroundImage property. Description The backgroundPosition property sets or returns the position of a background-image within an element. Show demo May 23, 2013 · I'm trying to change both background-image and background-size (so it fits the div) $(". I've tried various css rules like, clip: rect (), background-position, background-clip to get rid of them so the user won't see them. Free code download included. backgroundImage property to the new image URL. The CSS sets the background image size to 200px X 200px, then the JS updates it to 100px X 100px. This will set the surrounding div to the size of the image in the img element but display it as a background. However, a Google Search bar appears at its top. Definition and Usage The background-repeat property sets if/how a background image will be repeated. Definition and Usage The background-size property specifies the size of the background images. Jan 18, 2025 · The primary properties include background-image, background-size, background-position, and background-repeat. Also, make sure it retains its ratio (doesn’t stretch weird). You can apply full page backgrounds outside of the slide area by adding a data-background attribute to your <section> elements. Jul 31, 2019 · 次に CSS で background-size: contain; を指定することで、img 要素で指定した背景画像に対してサイズの伸縮をさせているので、手数としては多すぎる。 object-fit を使った方法 object-fit を使う場合は、もっと簡単になる。 Nov 20, 2010 · Four techniques are explored on accomplishing a full page background image that conforms to our exceptions: no white space, scales as needed, retains aspect ratio, centered, and more. Sep 26, 2010 · The idea is if the viewer screen is small, the background image gets smaller, and as the screen gets bigger, the image expands to fit its maximum size. At the moment, I have 3 sizes of background images per image, one for fullscreen, one for smaller screens, and one for mobile. I will try a CSS or even Javascript (JQuery) solution as needed. Well organized and easy to understand Web building tutorials with lots of examples of how to use HTML, CSS, JavaScript, SQL, PHP, Python, Bootstrap, Java and XML. If the window is resized, the image needs to resize with it, to stay at 100%. May 2, 2015 · 10 is there an easy way to get the final height and width of a background image with Javascript or jQuery even if a background-size property was applied? I mean, I know I can get the background image url and load it to an Image object and then get the width and height. Mar 21, 2013 · The problem is images are not getting fitted to td correctly. Jul 23, 2025 · Changing a background image in JavaScript involves modifying the style property of an HTML element to update its backgroundImage property. co I have added Dec 19, 2015 · I will set a background image on the full size from browser. e: 1200 you're missing the unit! Nov 16, 2025 · By resizing images with JavaScript, developers can effectively reduce image size without compromising quality, akin to optimally packing a suitcase – fitting all essentials in while maintaining a manageable weight. In order to do this I added the lazy load plugin of jquery: jquery-lazy. Enroll My Course : Next Level CSS Animation and Hover Effectshttps://www. With this property, you can set/return one or more of the following (in any order): Jun 3, 2012 · Learn how to change the background image in the body using JavaScript on Stack Overflow. Component properties not set in the background shorthand property value declaration are set to their default values. but for every company the background image position is non uniform. The background size can be specified in lengths, percentages, or by using one of the keywords: auto, contain, or cover. I even tried using java script on image load to fit to container. I'm trying to change the size of an image with JavaScript. Just so there's no confusion I want the Oct 27, 2017 · For the application I'm building, this particular image needs to compress/stretch to fit the parent div, regardless of aspect ratio. background:#ff0000 url (smiley. Show demo Styling & HTML Card Styling Image Resizing Field Styling Audio Replay Buttons Text Direction Other HTML Browser Appearance Platform-Specific CSS Installing Fonts Add Font to Media Folder Update Template to Use That Font Night Mode Fading and Scrolling Javascript Card Styling You can watch a video about styling cards on YouTube. attr('id'); $("# Read this tutorial and learn the two methods of getting the width and height of the image. This is an in-depth guide to everything about lazy loading of images including native lazy loading methods. If the JavaScript runs before that image has fully downloaded and rendered, the result will be 0. Jul 18, 2013 · They want to have the background image (s) at the top recognize the browsers window-size, so that the image (s) fills the whole screen and don't show the content below before you scroll down when you load the website. Jul 23, 2025 · This article will show you how to change the background color in JavaScript. By setting this property, you can control how your background appears, from stretching it to fill the entire container to cropping it to fit a specific size. Learn how to change background images on scroll with CSS. By doing this the new image overlays the old image and it comes on top of all images and becomes visible. medium represents our new fetched data containing the URL fo the new image we want to use as background image. May 14, 2022 · I'm using a picture I found on Google Images as a background image. • ICO size fit options: Contain, Cover, Fill. io. and on the background image are some elements (building). AVIF converter supports: • Keep the image's background transparent or change them to opaque (choose a color to fill). object. We install it with npm i jquery-lazy. co I have added Mar 10, 2021 · 1 What I want to do Set background-size:cover -like effect on a canvas image Re-draw a canvas image as a window is resized (responsive) What I tried I tried 2 ways below. Read more bout this in Css-Tricks 3 days ago · Unlike background images (which can be swapped with CSS `background-image` in media queries), non-background images rely on HTML/CSS/JavaScript tricks to dynamically adjust. What is Background Size? Before we dive into the code, let's quickly define what background-size does. Nov 26, 2012 · I guess what I'm looking for is a javascript routine that has the logic of background-size:cover for dynamic sizing, in a situation where both the source (image dimensions) and target (display box) are dynamic in size. May 29, 2012 · okay, I've never used background-size: cover; but I looked at it online, so what your wanting is a way to have a fullscreen image / video which resizes when the window resizes? Nov 7, 2025 · The background shorthand CSS property sets all background style properties at once, such as color, image, origin and size, or repeat method. Learn how to auto-resize an image or a video with the help of CSS illustrated in the examples. Dec 19, 2015 · I will set a background image on the full size from browser. Feb 20, 2022 · I think you need to specify where and how you're running this JS code. How can I make this? The W3Schools online code editor allows you to edit code and view the result in your browser 6 days ago · The background-image CSS property sets one or more background images on an element. clientHeight and Element. the scroll down site, the picture with normal scroll up. Nov 5, 2013 · How can I resize and reposition the image inside a box, in such way that it covers the entire box, similar to how background-size: cover works. To optimize background image file size for improved performance, consider using image compression and optimization techniques. com Mar 8, 2025 · To set the size of a background image in JavaScript, you can use the background-size property and specify one of three values: cover, contain, or a fixed width/height value. Here's a step-by-step breakdown along with the full JavaScript code and description. Mar 7, 2025 · When working with background images in JavaScript, keep the following best practices in mind: Use relative URLs for image sources to ensure compatibility across different environments. Color Backgrounds All CSS color formats Learn how to add and customize background images in HTML, including tips for improving readability and design. 0’s interface, but the concepts are Read this tutorial and learn the two methods of getting the width and height of the image. On its left hand side various icons/logs such as WhatsApp, Gmail etcappears too. Tip: By default, a background-image is placed at the top-left corner of an element, and repeated both vertically and horizontally. picture. But it is the size of the source image. • Keep the image's background transparent or change them to opaque (choose a color to fill). Everything was responsive and I needed to maintain the position and size of the background on the . Syntax: To get the backgroundSize property object. If no background-position is specified, the image is always placed at the element's top left corner. Strech Apr 14, 2021 · I am trying to give different background images for different screen sizes. I also need to set the size of the image When working on a web project, having control over the background size is crucial. May 15, 2008 · My friend Richard recently came to me with a simple CSS question: Is there a way to make a background image resizeable? As in, fill the background of a web page edge-to-edge with an image, no matter the size of the browser window. 1 today: The best JavaScript Charts and JavaScript Graphs, in the World. A Hero Image is a large image with text, often placed at the top of a webpage: Oct 26, 2016 · @keyframes animatedBackground { from { background-size: cover; background-position: 50% 22%; } to { background-size: cover; background-position: 100% 22%; } } but it seems not to work if I use background-size: cover? Edit 2 I found out that it does work, but the width is 100%, so it doesn't make any difference if I use background-position: 50% 22%; or background-position: 100% 22%;, but if I I am trying to lazyload a background image. Jul 5, 2014 · could try just using css background-size:cover and or background-size:100%. It's a fundamental property in CSS that enables you to set the dimensions of your background, ensuring it looks great on various devices and screen sizes. Syntax: It returns the background property. This worked for me and I hope this helps some one else. Feb 2, 2024 · Use naturalWidth and naturalHeight to Get Image Dimensions in JavaScript While working with the dimensions of an image, it is always highly recommended that we figure out the real width and height of an image. Nov 17, 2015 · I want a div element to stretch across that is 33% width with a background image done in css background-image:url(); background-size:cover How do I animate a zoom-in of the image of the backgrou Sep 5, 2016 · I have a series of <div> containers with a background image and info panel. Dec 29, 2021 · I am trying to make the background image on a div change its scale as per the amount of page scrolled. var newImage=data. I know I can use @media screen for css backgrounds and scaling, but this would require that I create a new CSS rule for every image. It is giving me an error: $("body") is null. In our case, the image we’re working with is 640 (pixels wide). Works well on desktop screens but on mobile screen, the BG image's height reduces and shrinks Jul 11, 2024 · Struggling with background images? Uncover expert tips and tricks in CSS, JavaScript, React, and Vue. To handle the offsets / aspect ratio and various sizes, we can set the image larger ( to give it 'play' ) than we need and then set an over percentage eg . The script fires on image load and on navigation click. The video shows Anki 2. What is Background Size? The background-size property allows you to control the size of a background image or color. In another function in javascript I need to be able to get the size of the image/background of this button after it has passed through the contain function. Im using this script that I found online to have a random background image on whenever the browser is refreshed. Tip: Use 50% to create a half page background image. Learn how to auto-resize images in HTML while maintaining their aspect ratio using CSS techniques and properties for responsive web design. background It is used to set the background property. watch the link: http://cnation. However, before the javascript resize the image is Jun 18, 2019 · You could also insert an image by using an empty string for the content, making it display: block in some way, sizing it, and using background-image. 3. x, complete with code examples, pros/cons, and best practices. Jan 15, 2014 · 5 So I have an image gallery. But its not working. Nov 9, 2014 · Can you explain what's the initial background image size? Why use animate () instead of simply setting the bg image to 100% in CSS? Have you tried using CSS3's transition? What means dynamic? What you want to achieve? Also if wt_r returns i. Jan 16, 2014 · 1 I am building a website where I have a div with a background image. didn't worked though. Whether you're designing a website or creating a web application, understanding how to set and manipulate background sizes can make all the difference. I want to set the height and width of an image in the JS file. The background-image should be visible completely. Add meta tag for responsive media query and then you can add image based on screen like below. style. background = "color image repeat attachment position size origin clip|initial Aug 9, 2022 · The HTML DOM Style backgroundSize Property is used to set or return the size of the background image. The background-image property is straightforward; it sets an image as the background of an element. I have followed this question and based on comment i have implemented the stretching code. To ensure that every image uses the maximum available width, I give it the following background-size: background-size: 100% auto; However, some of the images are taller than the available screen height. Mar 1, 2011 · With CSS3 you can resize your background with the background-size property: Adding this to your CSS will stretch the background to 100% width and 100% height, in the latest browsers. Color Backgrounds All CSS color formats Sep 1, 2017 · So I have this kind of challenge: image on backgound of body, backgound-size, cover to fit whole screen. I created this code to resize photos/images to fit the screen, considering the space available for the nav bar. As such, resizing this demo to any Mar 15, 2017 · The issue is rooted in when the JavaScript runs. The background-size property determines the dimensions of a background image or color. CSS Code: Css is used to design the structure. HTML Code: It is used to create a basic structure to include images. i want them to occupy whole td . Dec 31, 2023 · An example to get the real width and height of an image with plain javascript selectors and image object jquery with code examples Learn how to add a form to a full-width image with CSS. Also, doesn’t cause Feb 6, 2012 · When I load my web page, I want my background image to exactly match my window size. Dec 22, 2014 · I have an image loading that is resize to fit the window using javascript, and the image is continuously resize when the browser window is resized. What I eventually had success with was volume mounting the nginx config they include and injecting my own custom stylesheet with the following snippet: Learn how to create a responsive slideshow with CSS and JavaScript. Apr 3, 2012 · Is there a css-only solution to scale an image into a bounding box (keeping aspect-ratio)? This works if the image is bigger than the container: Dec 16, 2016 · I am trying to find a way that I can have an image that takes up the whole browser window and is responsive. CSS Multiple Backgrounds CSS allows you to add multiple background images for an element, through the background-image property. Oct 10, 2009 · 3 Duplicate of: Stretch and Scale CSS Background How do I stretch a background image to cover the entire HTML element? background image doesn’t stretch full page width I've got a webpage background image, which needs to be displayed fully at 100% of the window's size. At the point I'm at right now, I can do this as an image inside of a div tag, or as a background image to the div. Learn about the properties that help to get the image size. If the JavaScript runs after the image has downloaded and rendered, the result will be correct. If you go the URL listed above, right click, select Inspect, and run this code in the console it works fine. g. Then make the background-image of the surrounding div the same as the image. CSS Background-Size Syntax The syntax for the background-size property is, background-size: auto | length | cover | contain | initial | inherit; Here, auto: specifies the original size of the background image (default value) length: allows to set background image size using length values such as px, em, etc percentage: allows to scale image relative to a container size cover: allows the Oct 9, 2020 · I want to zoom background image on a hover but without change text size. The following example resizes a background image to much smaller than the original image (using pixels): Jun 15, 2014 · To illustrate this better take a look at the image below: the left image is using background-size:cover and neatly fills up the entire box itself regardless of whether the image is portrait or landscape, but is hidden behind the semi transparent top and bottom borders. Jul 1, 2023 · Learn how to create image zoom effects using pure CSS and JavaScript with this tutorial, complete with code downloads. I went ahead and reduced my code though since you can accomplish the same thing in 1-2 lines. Lastly, the image should always fil 6 days ago · The background-size CSS property sets the size of the element's background image. Tip: The background image is placed according to the background-position property. Also, have it resize larger or smaller as the browser window changes. In this guide, we’ll explore three reliable methods to swap images based on device size in Bootstrap 3. Jul 12, 2025 · When we scroll, we decrement the z-coordinate of the current image and increments the z-coordinate of the new image. The different background images are separated by commas, and the images are stacked on top of each other, where the first image is closest to the viewer. Here we will show three different methods: 1. Any good ways on doing this? The background-position property sets the starting position of a background image. So I want to hover over the buildin Learn how to add and customize background images in HTML, including tips for improving readability and design. clickableimg"). udemy. Using background-size: contain;: The background image will scale up and down, and tries to fit the content area. net/Lph2W/. CSS body{ background: no-repeat center center fixed; -webkit-background-size: c Nov 7, 2025 · The background shorthand CSS property sets all background style properties at once, such as color, image, origin and size, or repeat method. Simulation background-size: cover in canvas How to set background size cover on a canvas Issue The image's aspect ratio is not fixed. Four different types of backgrounds are supported: color, image, video and iframe. If you found this useful please don't forget to vote UP :) Description The backgroundSize property sets or returns the size of the background images. Feb 26, 2015 · //data. If anyone has any suggestions, I would love to hear them. Definition and Usage The background property is a shorthand property for: background-color background-image background-position background-size background-repeat background-origin background-clip background-attachment It does not matter if one of the values above are missing, e. See real code examples and the best practices of image transformation with JavaScript. Nov 30, 2013 · 7 In CSS I set a button to be 100px x 100px and have the background-size: contain; In javascript I apply an image to the element that I do not have the Height/width of (nor aspect ratio) . By default, a background-image is repeated both vertically and horizontally. I have the following code. Is there a JavaScript or jQuery API or method to get the dimensions of an image on the page? Aug 15, 2011 · 2 My website's background is a huge image that covers the whole webpage, how can I make it so that, we detect user's screen size and change the background image accordingly? Say for example, my background image is 1x1px, if user screen is 2x2px (this is just an example, nobody has this kind of small screen), I want stretch my background to fit 2x2. Test and experiment with HTML code using W3Schools' Tryit Editor, an interactive tool for learning and practicing web development skills. background-size: contain; scales an image to make it as big as possible but always entirely visible (or contained) in the background of a target element (this box is styled this way). Learn techniques to create dynamic, visually appealing backgrounds for your website. backgroundSize To set the backgroundSize property object. Animate backgrounds with CSS and JavaScript. Download AG Charts v12. It can help to manipulate one or more of eight background properties. Avoid using too many or large background images, as they can impact page load times. Mar 14, 2017 · I got solution to showcase image based on screen size and can show different image using this html format. I read somewhere that I should use content:url(x) instead, but wh Best Practices for Working with Background Images in JavaScript When working with background images in JavaScript, it is essential to follow best practices to ensure optimal performance, accessibility, and SEO. click(function() { var choosenpic = $(this). Each image is a background-image that stretches across the entire page. Is there such a javascript equivalent to background-size:cover that works on img tags? Definition and Usage The background property is a shorthand property for: background-color background-image background-position background-size background-repeat background-origin background-clip background-attachment It does not matter if one of the values above are missing, e. background-size: 100% auto; (stretch image to 100% width of the container and set height automatically by the ratio of the initial image dimensions). Jan 23, 2014 · The background-size property is kinda new and behaves different in every browser. So, we will consider using the naturalWidth and naturalHeight properties to retrieve the exact dimensions of an image using JavaScript. Learn how to create responsive Modal Images with CSS and JavaScript. Oct 30, 2017 · I am trying to stretch the background image so it can fit the canvas size. The CSS background-size Property The background-size property allows you to specify the size of background images. background-size is available in IE9+, Firefox, Chrome, Safari May 12, 2021 · Lazy loading images that are not in the viewport improves initial page load performance and user experience. This can be done by selecting the element and setting its style. However, the image will keep its aspect ratio (the proportional relationship between the image's width and May 1, 2025 · この記事では「 CSSのbackground-sizeで背景画像サイズを設定する方法を徹底解説!! 」について、誰でも理解できるように解説します。この記事を読めば、あなたの悩みが解決するだけじゃなく、新たな気付きも発見できることでしょう。お悩みの方はぜひご一読ください。 Dec 21, 2024 · Resize images with the help of JavaScript, following this guide. Element. That way you could re-size it with background-size. In this article, we'll explore how to set a background image in JavaScript that seamlessly adapts to any screen size or resolution. The image can be left to its natural size, stretched, or constrained to fit the available space. In this guide, we'll delve into the world of JavaScript background size, exploring CSS background size, SVG, and more. Optimize your images by compressing and resizing them to reduce file size. Introduction background-size: cover; scales an image to cover entirely the background of a target element (the body of this page is styled this way). Jul 11, 2025 · To get the size of an image (height and width), Element. • Support crop image to easy control output image area for icon. May 27, 2020 · Load small background images on smaller screens and large ones on larger screens. How To Create a Full Height Image Use a container element and add a background image to the container with height: 100%. medium; Is there any way in Javascript to make the images shrink proportionally to fit the square size? Currently, the images fit the square size, but do not shrink, so when I say, Nov 9, 2016 · I'm using FabricJS for a project in which I need to be able to set the background image of the canvas. Another, perhaps inefficient, solution would be to include the image under an img element set to visibility: hidden;. Background Images Background images can also respond to resizing and scaling. But in vain so far. Neither works. The background property sets or returns up to eight separate background properties, in a shorthand form. prsgrp dcxuw liz vkzyla tgif vpm gjhb njoqmm cgm jgnlbrqbx gqjk uknoo cixbj jllrjc enek