Modern Multi Image Uploader For Bootstrap 4 - Images Loader

Images Loader is a Bootstrap & jQuery powered uploader plugin that provides a user-friendly and nice-looking interface for uploading multiple images to the web server.

More Features:

• Thumbnail preview.
• Image Rotate.
• Set the order of images in the queue.
• File validation.

How to use it:

1. Load the necessary jQuery library, Bootstrap 4 framework, and Font Awesome iconic font.

<link rel="stylesheet" href="/path/to/cdn/bootstrap.min.css" />
<script src="/path/to/cdn/jquery.min.js"></script>
<script src="/path/to/cdn/bootstrap.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.13.1/js/all.min.js" crossorigin="anonymous"></script>

2. Load the Images Loader plugin's files.

<link rel="stylesheet" href="./jquery.imagesloader.css" />
<script src="./jquery.imagesloader.js"></script>

3. The required HTML structure for the image uploader.

<form id="frm" method="post" class="needs-validation" novalidate="">
  <!--Image container -->
  <div class="row"
    data-type="imagesloader"
    data-errorformat="Accepted file formats"
    data-errorsize="Maximum size accepted"
    data-errorduplicate="File already loaded"
    data-errormaxfiles="Maximum number of images you can upload"
    data-errorminfiles="Minimum number of images to upload"
    data-modifyimagetext="Modify immage">
    <!-- Progress bar -->
    <div class="col-12 order-1 mt-2">
      <div data-type="progress" class="progress" style="height: 25px; display:none;">
        <div data-type="progressBar" class="progress-bar progress-bar-striped progress-bar-animated bg-success" role="progressbar" style="width: 100%;">Load in progress...</div>
      </div>
    </div>
    <!-- Model -->
    <div data-type="image-model" class="col-4 pl-2 pr-2 pt-2" style="max-width:200px; display:none;">
      <div class="ratio-box text-center" data-type="image-ratio-box">
        <img data-type="noimage" class="btn btn-light ratio-img img-fluid p-2 image border dashed rounded" src="./img/photo-camera-gray.svg" style="cursor:pointer;">
        <div data-type="loading" class="img-loading" style="color:#218838; display:none;">
          <span class="fa fa-2x fa-spin fa-spinner"></span>
        </div>
        <img data-type="preview" class="btn btn-light ratio-img img-fluid p-2 image border dashed rounded" src="" style="display: none; cursor: default;">
        <span class="badge badge-pill badge-success p-2 w-50 main-tag" style="display:none;">Main</span>
      </div>
      <!-- Buttons -->
      <div data-type="image-buttons" class="row justify-content-center mt-2">
        <button data-type="add" class="btn btn-outline-success" type="button"><span class="fa fa-camera mr-2"></span>Add</button>
        <button data-type="btn-modify" type="button" class="btn btn-outline-success m-0" data-toggle="popover" data-placement="right" style="display:none;">
        <span class="fa fa-pencil-alt mr-2"></span>Modify
        </button>
      </div>
    </div>
    <!-- Popover operations -->
    <div data-type="popover-model" style="display:none">
      <div data-type="popover" class="ml-3 mr-3" style="min-width:150px;">
        <div class="row">
          <div class="col p-0">
            <button data-operation="main" class="btn btn-block btn-success btn-sm rounded-pill" type="button"><span class="fa fa-angle-double-up mr-2"></span>Main</button>
          </div>
        </div>
        <div class="row mt-2">
          <div class="col-6 p-0 pr-1">
            <button data-operation="left" class="btn btn-block btn-outline-success btn-sm rounded-pill" type="button"><span class="fa fa-angle-left mr-2"></span>Left</button>
          </div>
          <div class="col-6 p-0 pl-1">
            <button data-operation="right" class="btn btn-block btn-outline-success btn-sm rounded-pill" type="button">Right<span class="fa fa-angle-right ml-2"></span></button>
          </div>
        </div>
        <div class="row mt-2">
          <div class="col-6 p-0 pr-1">
            <button data-operation="rotateanticlockwise" class="btn btn-block btn-outline-success btn-sm rounded-pill" type="button"><span class="fas fa-undo-alt mr-2"></span>Rotate</button>
          </div>
          <div class="col-6 p-0 pl-1">
            <button data-operation="rotateclockwise" class="btn btn-block btn-outline-success btn-sm rounded-pill" type="button">Rotate<span class="fas fa-redo-alt ml-2"></span></button>
          </div>
        </div>
        <div class="row mt-2">
          <button data-operation="remove" class="btn btn-outline-danger btn-sm btn-block" type="button"><span class="fa fa-times mr-2"></span>Remove</button>
        </div>
      </div>
    </div>
  </div>
  <div class="form-group row">
    <div class="input-group">
      <!--Hidden file input for images-->
      <input id="files" type="file" name="files[]" data-button="" multiple="" accept="image/jpeg, image/png, image/gif," style="display:none;">
    </div>
  </div>
</form>

<!-- Upload Button -->
<div class="row mt-2">
  <div class="col-md-4 offset-md-8 text-center mb-4">
    <button id="btnContinue" type="submit" form="frm" class="btn btn-block btn-outline-success float-right" data-toggle="tooltip" data-trigger="manual" data-placement="top" data-title="Continue">
      Continue<span id="btnContinueIcon" class="fa fa-chevron-circle-right ml-2"></span><span id="btnContinueLoading" class="fa fa-spin fa-spinner ml-2" style="display:none"></span>
    </button>
  </div>
</div>

4. Initialize the image uploader with default options.

$(document).ready(function () {

  var imagesloader = $('[data-type=imagesloader]').imagesloader({
      // options here
  });

  //Form
  $frm = $('#frm');
  // Form submit
  $frm.submit(function (e) {
    var $form = $(this);
    var files = imagesloader.data('format.imagesloader').AttachmentArray;
    var il = imagesloader.data('format.imagesloader');
    if (il.CheckValidity())
      alert('Upload ' + files.length + ' files');        
    e.preventDefault();
    e.stopPropagation();
  });

});

5. Set the images to load on init.

var imagesloader = $('[data-type=imagesloader]').imagesloader({
    imagesToLoad: [
      {"Url":"1.jpg","Name":"Image1"},
      {"Url":"2.jpg","Name":"Image2"}
      // more images here
    ]
});

6. Possible options to config the image uploader.

var imagesloader = $('[data-type=imagesloader]').imagesloader({

    // animation speed
    fadeTime: 'slow', 

    // input ID
    inputID: 'files', 

    // maximum number of files
    maxfiles: 4,

    // max image bytes
    maxSize: 5000 * 1024,

    // min image count
    minSelect: 1,
    
    // allowed file types
    filesType: ["image/jpeg", "image/png", "image/gif"],

    // max/min height
    maxWidth: 1280,
    maxHeight: 1024,

    // image type
    imgType: "image/jpeg"

    // image quality from 0 to 1
    imgQuality: .9,

    // error messages
    errorformat: "Accepted format",
    errorsize: "Max size allowed",
    errorduplicate: "File already uploaded",
    errormaxfiles: "Max images you can upload",
    errorminfiles: "Minimum number of images to upload",

    // text for modify image button
    modifyimagetext: "Modify image",
    
    // angle of each rotation
    rotation: 90
    
});

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This awesome jQuery plugin is developed by ITformat. For more Advanced Usages, please check the demo page or visit the official website.