Loading images in advance before webpage loads

Welcome friends! This is my first time asking a question here, so I hope I'm doing it right :) I'm looking to preload 3 images before the webpage fully loads so that they all appear simultaneously. Currently, the images load one after another and it doesn't look smooth. One image is defined in css as a background image, while the other two are simple "img" elements. I've attempted creating JavaScript image objects, but the loading is still choppy. I also tried preloading them in a display:none; div, but the issue persists. Any suggestions on what steps I should take?

Thanks in advance for your help!

javascriptjqueryhtmlcss

Answer №1

One easy fix is to utilize data URIs http://css-tricks.com/data-uris/

I believe that ought to resolve the issue.

Data URIs may have some drawbacks when it comes to Internet Explorer, but in this scenario, you could consider it as graceful degradation. :)

Edit: I noticed your mention of display:none divs. Utilizing display none on divs will NOT preload your images. You must set the display to block and hide the div in a different manner. Perhaps configuring z-index or -9999 offset, among other options.

Answer №2

This method is effective: (click here to test it out: )

<!-- jQuery must be included -->

<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script>

<!-- the images -->
<div class="showmetoo" style="background: url(jimhance-vader_inset.jpg)">
    <br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/></div>

<img class="showall" src="octopus3.jpg" alt="an image"><br/>
<img class="showall" src="moorea.jpg" alt="an image"><br/>

<!-- initially hidden -->
<style>
img.showall { visibility: hidden }
div.showmetoo { visibility: hidden }
</style>

<!-- the script -->
<script type="text/javascript">
var remaining = $('.showall').length;

function showthem(){
    remaining--;
    if(!remaining){
        $('.showall').css('visibility', 'visible');
        $('.showmetoo').css('visibility', 'visible');
    }
}

// attach the callback to the load event of the images.
$('.showall').bind('load', showthem);

// display the images forcibly (just in case)
setTimeout(showthem, 1000);  //just in case load event fires before the callback is set.
</script>

Answer №3

A simple approach would be to show a loading animation for the three images until they finish loading, and then swap out the animation with the actual images.

Answer №4

Upon realizing that my image was extremely high resolution - far exceeding the requirements for webpages - measuring something like 4500 X 6000 with a file size of ~300kB, I took action. Using an image editing tool, I resized it to 400 X 600 and reduced the file size to ~50kB. As a result, the image now loads quickly without any blank spaces appearing during the loading process.

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