I have a few images on my page. I'm finding that the page starts to render before the images have been loading (which is good), but that the visual effect is not great. Initially the user sees this:
--------hr--------
text
Then a few milliseconds later the page jumps to show this:
--------hr--------
[ ]
[ image ]
[ ]
text
Is there a simple way that I can show a grey background image of exactly the width and height that the image will occupy, until the image itself loads?
The complicating factor is that I don't know the height and width of the images in advance: they are responsive, and just set to width: 100% of the containing div. This is the HTML/CSS:
<div class="thumbnail">
<img src="myimage.jpeg" />
<div class="caption">caption</div>
</div>
img { width: 100% }
Here's a JSFiddle to illustrate the basic problem: http://jsfiddle.net/X8rTB/3/
I've looked into things like LazyLoad, but I can't help feeling there must be a simpler, non-JS answer. Or is the fact that I don't know the height of the image in advance an insurmountable problem? I do know the aspect ratio of the images.
Instead of referencing the image directly, stick it within a DIV, like the following:
<div class="placeholder">
<div class="myimage" style="background-image: url({somedynamicimageurl})"><img /></div>
</div>
Then in your CSS:
.placeholder {
width: 300;
height: 300;
background-repeat: no-repeat;
background-size: contain;
background-image: url('my_placeholder.png');
}
Keep in mind - the previous answers that recommend using a div background approach will change the semantic of your image by turning it from an img into a div background. This will result in things like no indexing of these images by a search crawler, delay in loading of these images by the browser (unless you explicitly preload them), etc.
A solution to this issue (while not using the div background approach) is to have a wrapper div to your image and add padding-top to it based on the aspect ratio of the image that you need to know in advance. The below code will work for an image with an aspect ratio of 2:1 (height is 50% of width).
<div style="width:100%;height:0; padding-top:50%;position:relative;">
<img src="<imgUrl>" style="position:absolute; top:0; left:0; width:100%;">
</div>
Of course - the major disadvantage of this approach is that you need to know the aspect ratio of the image in advance.
There is a really simple thing to check before you start looking into lazy-loading and other JavaScript. Make sure the JPEG images you are loading are saved with the 'progressive' option enabled!
This will cause them to load the image iteratively, starting with a placeholder that is low-resolution and faster to download, rather than waiting for the highest resolution data before rendering.
It's very simple...
This scenario allows to load a profile photo that defaults to a placeholder image.
You could load multi CSS background-image into an element. When an avatar photo fails, the placeholder image appears default of div.
If you're using a div element that loads via a CSS background-image, you could use this style:
#avatarImage {
background-image: url("place-holder-image.png"), url("avatar-image.png");
}
<div id="avatarImage"></div>
Feel free to copy this:
<script>
window.addEventListener("load", function () {
document.getElementById('image').style.backgroundColor = 'transparent';
});
</script>
<body>
<image src="example.example.example" alt="example" id="image" style="background-color:blue;">
</body>
I got this from here: Preloader keeps on loading and doesnt disappear when the content is loaded.
Apart from all solutions already mentioned, the last solution would be to hide the document until everything is loaded.
window.addEventListener('load', (e) => {
document.body.classList.add('loaded');
});
body {
opacity: 0;
}
body.loaded {
opacity: 1;
}
<div id="sidebar">
<img src="http://farm9.staticflickr.com/8075/8449869813_1e62a60f01_b.jpg" />
<img src="https://www.nla.gov.au/sites/default/files/pic-1.jpg" />
<img src="https://www.nla.gov.au/sites/default/files/pic-2.jpg" />
<img src="https://www.nla.gov.au/sites/default/files/pic-3.jpg" />
<img src="https://www.nla.gov.au/sites/default/files/pic-4.jpg" />
<img src="https://www.nla.gov.au/sites/default/files/pic-5.jpg" />
<img src="https://www.nla.gov.au/sites/default/files/pic-6.jpg" />
</div>
Or show some animation while everything is loading:
window.addEventListener('load', (e) => {
document.body.classList.add('loaded');
});
.loader {
border: 16px solid #f3f3f3;
border-radius: 50%;
border-top: 16px solid #3498db;
width: 70px;
height: 70px;
-webkit-animation: spin 2s linear infinite;
/* Safari */
animation: spin 2s linear infinite;
position: absolute;
left: calc(50% - 35px);
top: calc(50% - 35px);
}
#keyframes spin {
0% {
transform: rotate(0deg);
}
100% {
transform: rotate(360deg);
}
}
body :not(.loader) {
opacity: 0;
}
body .loader {
display: block;
}
body.loaded :not(.loader) {
opacity: 1;
}
body.loaded .loader {
display: none;
}
<div class="loader"></div>
<div id="sidebar">
<img src="http://farm9.staticflickr.com/8075/8449869813_1e62a60f01_b.jpg" />
<img src="https://www.nla.gov.au/sites/default/files/pic-1.jpg" />
<img src="https://www.nla.gov.au/sites/default/files/pic-2.jpg" />
<img src="https://www.nla.gov.au/sites/default/files/pic-3.jpg" />
<img src="https://www.nla.gov.au/sites/default/files/pic-4.jpg" />
<img src="https://www.nla.gov.au/sites/default/files/pic-5.jpg" />
<img src="https://www.nla.gov.au/sites/default/files/pic-6.jpg" />
</div>
The only thing I can think of, to minimize the jump effect on your text, is to set min-height to where the image will appear, I would say - set it to the "shorter" image you know of. This way the jump will be less evident and you won't need to use lazyLoad or so... However it doesn't completely fix your problem.
Here's one naive way of doing it,
img {
box-shadow: 0 0 10px 0 rgba(#000, 0.1);
}
You can manipulate the values, but it creates a very light border around the image that doesn't push the contents. Images can load at whatever time they want, and you get a good user experience.
Here is what I did with Tailwind CSS, but it's just CSS:
img {
#apply bg-no-repeat bg-center;
body.locale-en & {
background-image: url("data:image/svg+xml;utf8,<svg width='100' height='100' viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'><text x='50%' y='50%' style='font-family: sans-serif; font-size: 12px;' dominant-baseline='middle' text-anchor='middle'>Loading…</text></svg>");
}
body.locale-fr & {
background-image: url("data:image/svg+xml;utf8,<svg width='100' height='100' viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'><text x='50%' y='50%' style='font-family: sans-serif; font-size: 12px;' dominant-baseline='middle' text-anchor='middle'>Chargement…</text></svg>");
}
}
You can find the width and height of the images in the developer tools console, for example in Chrome you can click the cursor icon in the developer tools console and when you hover on the page it will highlight all the properties of the elements in the page.
This will help you find the width and height of the images, because if you hover on top of your images it will give you the dimensions of the image and other more properties. You can also make an individual div for each image and make the div relative to the images width and height. You can do it like this:
The main div will contain the images and also the background-div which is below the image.
HTML:
<html>
<head>
<meta charset="utf-8">
</head>
<body>
<div class=".mainDiv">
<div class="below"></div>
<img src="https://imgix.bustle.com/uploads/image/2020/2/13/da1a1ca4-95ec-40ea-83c1-4f07fac8b9b7-eqb9xdwx0auhotc.jpg" width="500"/>
</div>
</body>
</html>
CSS:
.mainDiv {
position: relative;
}
.below {
position: absolute;
background: #96a0aa;
width: 500px;
height: 281px;
}
img {
position: absolute;
}
The result will be that .below will be below the image and so when the image has trouble loading the user will instead see the grey .below div. You cannot see the .below div because it is hidden below the image. The only time you will see this is when the loading of the image is delayed. And this will solve all your problems.
I have got a way. But you will need to use JavaScript for it.
The HTML:
img = document.getElementById("img")
text = document.getElementById("text")
document.addEventListener("DOMContentLoaded", () => {
img.src = "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAOEAAADhCAMAAAAJbSJIAAAAA1BMVEWIiIhYZW6zAAAASElEQVR4nO3BgQAAAADDoPlTX+AIVQEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAADwDcaiAAFXD1ujAAAAAElFTkSuQmCC";
text.innerHTML = "Loaded but image is not";
});
window.onload = function() {
img.src = "https://media.geeksforgeeks.org/wp-content/uploads/20190913002133/body-onload-console.png";
text.innerHTML = "Image is now loaded";
};
#img {
width: 400px;
height: 300px;
}
<hr>
<img id="img" src="https://media.geeksforgeeks.org/wp-content/uploads/20190913002133/body-onload-console.png">
<p>Here is the Image</p>
<p id="text">Not Loaded</p>
Related
First of all many thanks for this page, it has been helping me a lot! But at this point I have a question where I cannot find an answer that fits what I want (maybe it cannot be achieved the way I am doing it).
I want to have a link with a static image, and when the user moves the cursor over the link I want an animated gif to play (the anim gif is set to not loop, so it only plays once). And when the user moves out go back to the static image and if the user goes in again, the gif should play again from the beginning.
I am using html5 combined with CSS to create my web (which I am using to learn at the same time). I did programing in the past with C++ and similar, but never on a web context.
So far this is what I tried:
CSS:
.img-acu
{
float: left;
width: 450px;
height: 264px;
background:transparent url("acu.gif") center top no-repeat;
}
.img-acu:hover
{
background-image: url("acusel.gif");
}
HTML:
But nothing at all appears :(
The weird thing is, I used this same example with two static images (png format) and it worked fine, but for some reason with the animated gif it doesn't want to work.
The I tried this:
CSS:
#test
{
width: 450px;
height: 264px;
background-image: url("acu.gif");
background-repeat: no-repeat;
background-position: left;
margin-left: 75px;
}
#test:hover
{
background-image: url("acusel.gif");
}
HTML:
<div id="test"></div>
And that works perfectly, it is just the link doesn't work and when the animated gif reaches the last frame, it never resets (unless I reload the page).
Do you know if there is any way to achieve this properly in HTML5 + CSS? should I use javascript or php?
I would really appreciate any help!
Thanks a lot!!
That can be achieved by use a static image and your gif image(Hey, that how 9gag do it!)
A basic script could be somthing like that:
<img id="myImg" src="staticImg.png" />
<script>
$(function() {
$("#myImg").hover(
function() {
$(this).attr("src", "animatedImg.gif");
},
function() {
$(this).attr("src", "staticImg.jpg");
}
);
});
</script>
Hopefully this simple way can help someone:
<img class="static" src="https://lh4.googleusercontent.com/-gZiu96oTuu4/Uag5oWLQHfI/AAAAAAAABSE/pl1W8n91hH0/w140-h165-no/Homer-Static.png"><img class="active" src="https://lh4.googleusercontent.com/i1RprwcvxhbN2TAMunNxS4RiNVT0DvlD9FNQCvPFuJ0=w140-h165-no">
Then add the following CSS:
.static {
position: absolute;
background: white;
}
.static:hover {
opacity: 0;
}
This should hopefully help some people. I got the code from a codepen and decided some stack overflow users may find it helpful. If you would like to view the original codepen, visit here: CodePen
The approach you took did not work because CSS will not change the background on < a >. Solving this can be done entirely with vanilla JS + HTML. The trick is to place:
<div class="img-acu">
inside of:
(insert here)
All that's left is to have CSS target the div. That way, you can set the static background, which then changes on :hover
Here's a fiddle showing this in action (or you can fiddle with this: https://jsfiddle.net/lyfthis/yfmhd1xL/):
.img-acu
{
float: left;
width: 250px;
height: 132px;
background:transparent url("https://i.imgur.com/7r91PY3.jpeg") center top no-repeat;
background-size: 125%;
}
.img-acu:hover
{
background-image: url("https://media.giphy.com/media/QMkPpxPDYY0fu/giphy.gif");
}
<!-- Don't do this:
-->
<div>
<div>Click on image below to go to link:</div>
<a href="https://www.google.com" title="ACU Project link">
<div class="img-acu"></div>
</a>
</div>
Try this if you are OK to use canvas:
<!DOCTYPE html>
<html>
<head>
<style>
.wrapper {position:absolute; z-index:2;width:400px;height:328px;background-color: transparent;}
.canvas {position:absolute;z-index:1;}
.gif {position:absolute;z-index:0;}
.hide {display:none;}
</style>
<script src="https://code.jquery.com/jquery-3.2.1.min.js" integrity="sha256-hwg4gsxgFZhOsEEamdOYGBf13FyQuiTwlAQgxVSNgt4=" crossorigin="anonymous"></script>
<script>
window.onload = function() {
var c = document.getElementById("canvas");
var ctx = c.getContext("2d");
var img = document.getElementById("gif");
ctx.drawImage(img, 0, 0);
}
$(document).ready(function() {
$("#wrapper").bind("mouseenter mouseleave", function(e) {
$("#canvas").toggleClass("hide");
});
});
</script>
</head>
<body>
<div>
<img id="gif" class="gif" src="https://www.macobserver.com/imgs/tips/20131206_Pooh_GIF.gif">
<canvas id="canvas" class="canvas" width="400px" height="328px">
Your browser does not support the HTML5 canvas tag.
</canvas>
<div id="wrapper" class="wrapper"></div>
</div>
</body>
</html>
I am creating an email flyer and I have multiple images that I want at 140px by 140px but some are originally 300x300 or 400x400. I don't want to go resize each image as there can be quite a few and the flyer will be a weekly update so is it possible to use CSS to tell all images (or images that have classes) to resize to 140px?
I was going to post some code but it's quite a vague request so there no relevant code I can show to help my question.
maybe if I <span>...</span> and then give the span a class, would it be possible this way?
if your markup is for a newsletter you may force dimensions both with style attribute and with inline width and height attribute, e.g.
<img src="..." style="width:140px; height:140px" width="140" height="140" />
but, anyway, I strongly suggest to perform some kind of batch task for automatic resize of the images (e.g. using GruntJS), so you could save some precious bandwidth on the server in which you store your static assets. (conversely, if you embed images into the email, users will appreciate a lighter size)
Yeah add class to span and then:
span.yourclass img {
width: 140px;
}
I think I might be understanding this, but some simple css should work :
css :
img.small {
width: 140px;
height: 140px;
}
OR if you want to do all img's under a specific element :
.thumbs img {
width: 140px;
height: 140px;
}
html :
<img src="pic.jpg" class="small">
<div class="thumbs">
<img src="pic.jpg">
<img src="pic.jpg">
<img src="pic.jpg">
</div>
Or if they are dynamically generated, you can eliminate the css and just go :
<img src="pic.jpg" width="140" height="140">
You can set width and height for all images. Add "max" keyword to be sure.
img{
max-width:140px !important;
max-height:140px !important;
}
If you simply want ALL images on the page to resize, add the following into your CSS:
img{ width: 140px; }
This will proportionally set the height/width and I'm assuming all you images are square ?
If not, add 'height: 140px' but this will distort an image that isn't square.
wrap your images with div.class then write a single css to resize all the images which are wrapped by that div
MARK-UP::
<div class="imageWrapper">
<img src="/path/to" />
<img src="/path/to" />
<img src="/path/to" />
</div>
CSS::
.imageWrapper{
overflow:hidden;
}
.imageWrapper img{
width:400px;
height:400px;
}
There is a page with background. Before was given as img:src. But I couldn't insert text on it. Because of this I changed that code as background-image. so far everything is ok.
Then the text I'll insert is long, it exceed height of background. I must add an scroll. I inserted max-height but confused here.
here the page is : http://www.heptasarim.com/test/cezayir2/menuler2.html
Background adress : /cezayir/images/menuorta.png
HTML:
<div id="menuorta2">
<p style="background-image:url(images/menuorta.png); background-repeat:no-repeat; width:812px; height:404px;" id="myazi">
<span class="mbaslik">Kokteyl Prolonge Menü</span><br />
<strong>menü:</strong><br />
<strong>soğuk gezenler:</strong><br />
biberli zeytin ve marine somon<br />
tartolet içinde nar ekşili patlıcan salata<br />
hindi füme badem turşu ve hardal<br />
marine zeytin ve peynir şiş<br />
<strong>sıcak gezenler:</strong><br />
şişte ızgara limon ve kalamar<br />
susamlı et<br />
sigara böreği<br />
<strong>sıcak büfe:</strong><br />
dana külbastı<br />
kuru erikli tavuk<br />
patlıcan beğendi<br />
pilav ve salata<br />
<strong>tatlılar:</strong><br />
bal kabaklı cheese cake<br />
portakallı irmik helvası<br />
</p>
</div>
CSS:
#menuorta {
top:165px;
left:50px;
position:absolute;
z-index:0;
}
#menuorta2 {
top:127px;
left:20px;
position:absolute;
z-index:1;
}
#myazi {
color:#401c17;
font-weight:100;
font-family:Bookman Old Style;
font-size:13px;
padding:40px 65px;
max-height:200px;
overflow:hidden;
}
.mbaslik {
font-weight:bold;
font-size:16px;
}
Fixed :
background: url(../image/menuorta.png) no-repeat;
.. and /
Thank you very very very much to everyone. Especially to #ferne97
Set it to the width and height you want and add an overflow-y: scoll; to it.
#myazi {
width: 600px;
height: 200px;
overflow-y: scroll;
}
If you want to the background larger than the scroll area, place another div inside like this..
<div id="myazi">
<div class="inner-scroll">
<!-- content here -->
</div>
</div>
Then in the css add this..
#myazi {
background: url(path/image.png) no-repeat;
width: 800px; /* width of actual image */
height: 600px; /* height of actual image */
}
.inner-scroll {
width: 600px; /* width of content area */
height: 200px; /* height of content area */
overflow-y: scroll;
}
Please remove The following -
max-height :200px ;
This is setting the background image to 200px height .
And to improve the way your para is represented , you can utilize the css3 coloumn property to format it in better way . Scrolling is for me an unhealthy way to represent home page content.
Here's where you can see and learn to implement - http://www.quirksmode.org/css/multicolumn.html
I am using "background: #BDBDBD url(image.png) top left no-repeat" this css property for two div elements which has width and height set. On clicking a button I am changing the width of both the nested divs dynamically by making the function run continuously with the help of setInterval(). The image is not loading in chrome but it works fine in firefox and IE .. Many searches convey that using background image in chrome is not working but none of those solutions seems to work.
<div id="boxes">
<div id="dialog" class="window" style="overflow: auto">
<div id="progressBar" class="meter-wrap" style="display: block;position: relative; margin: auto;">
<div class="meter-value" style="background-color: #05C; width: 40%">
<div class="meter-text">
Loading...
</div>
</div>
</div>
<div class="meter-text-message">
Loading...
</div>
</div>
CSS:
.meter-wrap, .meter-value, .meter-text {
width: 155px; height: 30px;
}
.meter-wrap, .meter-value {
background: #bdbdbd url('/sf-images/tracker/inline_progress_bar.png') top left no-repeat;
}
js code:
function setProgressBar() {
var pgBar = jQuery("#progressBar");
pgBar.show();
running = true;
var inter = null;
function run() {
pgBar.find(".meter-value").css("width", progress + "%");
pgBar.find(".meter-text").text(progress + "%");
if (progress == 100) {
jQuery(".meter-text-message").html("Complete");
clearInterval(inter);
running = false;
}
}
inter = setInterval(run, 50);
}
Found that the image is not loading for first time, I made the div element visible with the image as background by another method. After that , when I execute the above js method image loads properly.
I (absolute beginner) would like to put an image into a box with a little margin around. I tried with padding and so, didn't work. Then I tried this:
<div style="border:1px solid #CC6699; width:11em; height:5.5em;">
<img style="align:center; width:10em; height:5em;" src="path">
</div>
But instead the image gets stuck in the upper left corner.
Couple of ways to do this:
My usual is to set a background image instead.
In your css:
div#img_container {
background: url(images/myImage.png) center center
}
In your html:
<div id="img_container"></div>
Or to just put some padding around it in your CSS
img#myImage {
padding: 20px;
}
and the HTML
<img id="myImage" src="images/myImage.png" />
Try this:
<html>
<head>
<style>
#wrap {
width: 500px;
text-align: center;
}
.pic {
padding: 5px;
border: 2px solid #000;
}
</style>
</head>
<body>
<div id="wrap">
<img src="logo.gif" class="pic">
</div>
</body>
</html>
CSS level 2 doesn't have a property for centering things vertically. There will probably be one in CSS level 3. But even in CSS2 you can center blocks vertically, by combining a few properties. The trick is to specify that the outer block is to be formatted as a table cell, because the contents of a table cell can be centered vertically.
<div style="border:1px solid #CC6699; width:11em; height:5.5em;text-align:center;vertical-align:middle;display:table-cell;">
<img style="width:10em; height:5em;" src="path">
</div>
EDIT
As rpflo suggests, using the background-position property is especially great if the container happens to be smaller than the image. Just remember to include the "background-repeat:none" style if you don't want the image to be tiled.
Use the following small jQuery plugin. It centers the loading image in the middle of the specified container (vertically and horizontally):
http://plugins.jquery.com/project/CenterImage
Demo site:
http://www.demosites.somee.com/demos/centerimage.html
Usage: This plugin positions a loading image centrally over a specified html container (div, span...).
Currently available configuration settings:
{ path: "../Images/ajax.gif", overlayColor: 'green', opacity: 0.2, zindex: 2000, isrelative:true }
Minimum configuration for initialization:
$('.4th').CenterImage({ path: "../Images/ajax-bar.gif" });
Call this, in order to remove the loading image (and the overlay)
$('.4th').CenterImage('remove');