How do I use this Bootstrap snippet?

Load Bootstrap 5.1.3, paste the HTML, add the CSS styles, and include the JS if present to match the live demo.

Can I use it commercially?

Yes. Snippets are free for personal and commercial projects. Review the snippets license page for details.

Is the layout responsive?

Yes. It is built on Bootstrap 5.1.3 and inherits its responsive grid and components.

Bootstrap html snippet. Resource efficient image zoom jQuery plugin

HTML code

Clean, semantic HTML that powers this Bootstrap 5.1.3 snippet. Copy and paste it into your page (with Bootstrap loaded) to reproduce the exact layout shown in the preview.

<!DOCTYPE html>
<html lang="en">
<head>
    <title>Resource efficient image zoom jQuery</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <script src="https://code.jquery.com/jquery-3.6.0.min.js" integrity="sha256-/xUj+3OJU5yExlq6GSYGSHk7tPXikynS7ogEvDej/m4=" crossorigin="anonymous"></script>
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.15.4/css/all.min.css" integrity="sha512-1ycn6IcaQQ40/MKBW2W4Rhis/DbILU74C1vSrLJxCq57o941Ym01SwNsOMqvEBFlcgUa6xLiPY/NS5R+E6ztJQ==" crossorigin="anonymous" referrerpolicy="no-referrer" />
    <link rel="stylesheet" href="style.css"/>
</head>
<body>
<div class="container pt-5">
    <div class="row">
        <div class="col-12">
            <h1>Resource efficient image zoom jQuery</h1>
            <hr>
            <p>Initialize the plugin:</p>
            <textarea class="form-control mb-4" rows="3">$(document).ready(function () {
    $(document).find('[data-toggle="image-zoom"]').modalZoom();
});</textarea>
            <p>Element sample:</p>
            <textarea class="form-control mb-4" rows="8"><img
                    src="https://www.bootdey.com/image/150/000/fff?Text=mmltools.com"
                    data-toggle="image-zoom"
                    data-src="https://www.bootdey.com/image/1920x1080/000/fff?Text=mmltools.com"
                    data-caption="Test Caption"
                    data-description="Test description"
                    alt=""
                    class="mr-3 image-zoom" /></textarea>
            <p>Data elements:</p>
            <ul>
                <li><strong>src</strong> - Full or relative path to the thumbnail</li>
                <li><strong>data-toggle="image-zoom"</strong> - Tells the script that this image can be zoomed</li>
                <li><strong>data-src</strong> - Full or relative path to the big image</li>
                <li><strong>data-caption</strong> - Title of the image, if not set, it won't show anything</li>
                <li><strong>data-description</strong> - Description of the image, if not set, it won't show anything</li>
            </ul>
            <p>Click the image below:</p>
            <img src="https://www.bootdey.com/image/150/000/fff?Text=mmltools.com" data-toggle="image-zoom" data-src="https://www.bootdey.com/image/1920x1080/000/fff?Text=mmltools.com" data-caption="Test Caption" data-description="Test description" alt="" class="mr-3 image-zoom" />
        </div>
    </div>
</div>
</body>
<div style="position: fixed;bottom: 5%;right: 5%;padding: 1rem;background: #fff;border: 1px solid #e9ecef;border-radius: 0.35rem;color: #a9aeb3;box-shadow: 0 0 20px #e9ecef;">
    <h5 style="margin-bottom: 1rem;padding-bottom: 1rem;text-align: center;">Support my work @ MMLTech</h5>
    <div style="display: flex;align-items: center;">
        <a style="margin-right:1rem;background: #d1e6fd;display: block;padding: 1rem;border-radius: 0.25rem;border: 1px solid #e9ecef;color: #000;font-weight: bold;" href="https://ko-fi.com/mmltech" target="_blank"><img src="https://storage.ko-fi.com/cdn/Kofi_Logo_Blue.svg" width="60px"/> Buy me a coffee</a>
        <a style="background: #d1e6fd;display: block;padding: 1rem;border-radius: 0.25rem;border: 1px solid #e9ecef;color: #000;font-weight: bold;" href="https://obscountdown.com" target="_blank"><img src="https://streamcd.net/Assets/images/logo-white.png" width="60px" height="19px" /> My projects</a>
    </div>
</div>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js" integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q" crossorigin="anonymous"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js" integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl" crossorigin="anonymous"></script>
<script src="main.js"></script>
</html>

CSS code

Scoped CSS that styles the component. Paste it after Bootstrap 5.1.3 to keep the design, spacing, and responsiveness consistent.

.image-zoom-modal .modal-fit-content {
  max-width: 70%;
  width: -moz-fit-content;
  width: fit-content;
}
.image-zoom-modal .modal-fit-content .image-zoom-out {
  max-width: 100%;
  cursor: zoom-out;
}

.image-zoom {
  cursor: zoom-in;
}

/*# sourceMappingURL=style.css.map */

Javascript/Jquery code

Lightweight JS to power any interactions this snippet needs. Drop it under your scripts (after Bootstrap 5.1.3) to mirror the live demo.

(function($){
    $.fn.modalZoom = function(options) {

        let caption = "",
            description = "",
            src = "";

        let ShowModal = function(){
            let modal_element = $('<div class="modal image-zoom-modal" tabindex="-1" role="dialog" id="DonationModal"></div>'),
                dialog_element = $('<div class="modal-dialog modal-fit-content" role="document"></div>'),
                content_element = $('<div class="modal-content"></div>'),
                body_element = $('<div class="modal-body mt-4"></div>'),
                src_element = $('<img class="image-zoom-out">'),
                caption_element = $('<h4 class="image-zoom-caption">' + caption + '</h4>'),
                description_element = $('<p class="image-zoom-description">' + description + '</p>'),
                close_element = $('<button type="button" class="close modal-close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">×</span></button>');

            close_element.css({
                position: "absolute",
                right: "5px",
                opacity: 1
            });
            if(src.length > 0)
            {
                src_element.attr("src", src);
                body_element.append(src_element);
            }
            if(caption.length > 0)
                body_element.append(caption_element);
            if(src.length > 0)
                body_element.append(description_element);

            content_element.append(close_element);
            content_element.append(body_element);
            dialog_element.append(content_element);
            modal_element.append(dialog_element);

            $("body").append(modal_element);
            modal_element.modal("show");
        };

        let build = function (e) {
            /**
             * Build the modal using the dom element data items
             */
            $(e).on("click", function () {
                caption = $(this).attr("data-caption");
                description = $(this).attr("data-description");
                src = $(this).attr("data-src");
                ShowModal();
            });

            /**
             * Close the modal if zoom-out image is clicked
             */
            $(document).on("click", ".image-zoom-out", function () {
               $(document).find(".modal").modal("hide");
            });

            /**
             * Remove the modal from DOM
             */
            $(document).on("hidden.bs.modal", ".image-zoom-modal", function () {
               $(this).remove();
            })
        };

        return this.each(function() {
            return new build(this);
        });

    };
})(jQuery);

$(document).ready(function () {
    $(document).find('[data-toggle="image-zoom"]').modalZoom();
});