Using jQuery to crop an image while maintaining its aspect ratio

Question

Using jQuery to crop an image while maintaining its aspect ratio

My website has two panels: a left panel for menus (370px width) and a right panel for content, mostly images, with padding-left set to 370px. I am currently using jQuery to resize images on document load, but they are stretching out of proportion. How can I crop all images while maintaining their aspect ratio? Here is my current code:

JS

jQuery(document).ready(function(){
    var windowWidth = $(window).width(); //retrieve current window width
    var windowHeight = $(window).height(); //retrieve current window height
    var finalWidth = windowWidth - 370;
    jQuery('.rightside > img').css({'height':windowHeight,'width':finalWidth});
    jQuery('.rightside').css('height',windowHeight);
});

HTML

<div class="rightside"> 
    <img class="project_image" src="" />
    <img class="project_image" src="" />
    <img class="project_image" src="" />
    <img class="project_image" src="" />
    <img class="project_image" src="" />
</div>

At the current resolution of 1920x1080, the right-side panel measures 1533x924 in width & height.

javascript jquery html css

Answer 1

Answer №1

If you're looking to achieve this without using scripts, it's possible with just CSS. The key is to utilize a div element with the background-image style property, along with background-size: cover to manage cropping and resizing while maintaining the aspect ratio regardless of viewport size.

Without having more insight into your current code structure, providing a foolproof solution is challenging. However, if your "right panel" spans the full height of the viewport, the following snippet could do the trick:

<style>
    .image-container {
        height: 100%;
        background-size: cover;
        background-position: center;
    }
</style>

<div class="right-panel">
    <div class="image-container" style="background-image: url('/some/image.png');"></div>
</div>

It's worth noting that the background-image style is applied directly in the HTML rather than within the stylesheet. This approach allows you to reuse the same class with various images effortlessly.

Answer 2

If you're looking to achieve this without using scripts, it's possible with just CSS. The key is to utilize a div element with the background-image style property, along with background-size: cover to manage cropping and resizing while maintaining the aspect ratio regardless of viewport size.

Without having more insight into your current code structure, providing a foolproof solution is challenging. However, if your "right panel" spans the full height of the viewport, the following snippet could do the trick:

<style>
    .image-container {
        height: 100%;
        background-size: cover;
        background-position: center;
    }
</style>

<div class="right-panel">
    <div class="image-container" style="background-image: url('/some/image.png');"></div>
</div>

It's worth noting that the background-image style is applied directly in the HTML rather than within the stylesheet. This approach allows you to reuse the same class with various images effortlessly.

Answer 3

Answer №2

Here are the steps you can follow along with the corresponding link:

https://github.com/sarahsmith/convert/blob/master/public/process.js
Generate a Blob containing the file data and retrieve its URL using window.URL.createObjectURL(blob)
Add new hidden inputs to the original form and send the dataURI images as regular text
Decode the dataURI from Base64 on the backend and store it for further use

Answer 4

Here are the steps you can follow along with the corresponding link:

https://github.com/sarahsmith/convert/blob/master/public/process.js
Generate a Blob containing the file data and retrieve its URL using window.URL.createObjectURL(blob)
Add new hidden inputs to the original form and send the dataURI images as regular text
Decode the dataURI from Base64 on the backend and store it for further use

Using jQuery to crop an image while maintaining its aspect ratio

Answer №1

Answer №2

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