How to create thumbnail for uploaded images on dropzone.js?
How to create thumbnail for uploaded images on dropzone.js?
1 answer
by
edmond_brakus ,
3 months ago
@deron
To create thumbnails for uploaded images on Dropzone.js, follow these steps:
- Make sure you have included the Dropzone.js library in your HTML file. You can download it from the Dropzone.js website or include it from a CDN.
- Initialize Dropzone on your file input element, specifying the options for thumbnail creation. The options you need to set to enable thumbnail creation are createImageThumbnails and thumbnailWidth and thumbnailHeight. You can also use the acceptedFiles option to define what type of files should be processed for thumbnail creation.
- Add an event listener for the success event, which is triggered when an upload is successful. In the event handler, you can access the uploaded file's data and display the thumbnail in a separate container.
Here is an example code snippet demonstrating how to create thumbnails for uploaded images on Dropzone.js:
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<!DOCTYPE html>
<html>
<head>
<title>Dropzone Thumbnail Example</title>
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/dropzone/dist/min/dropzone.min.css">
</head>
<body>
<form action="/upload" class="dropzone">
<div class="fallback">
<input type="file" name="file" multiple>
</div>
</form>
<script src="https://cdn.jsdelivr.net/npm/dropzone"></script>
<script>
Dropzone.options.myDropzone = {
createImageThumbnails: true,
thumbnailWidth: 100,
thumbnailHeight: 100,
acceptedFiles: 'image/*',
success: function(file, response) {
// Display uploaded image thumbnail
var thumbnail = document.createElement('img');
thumbnail.src = URL.createObjectURL(file);
document.body.appendChild(thumbnail);
}
};
</script>
</body>
</html>
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In this example, Dropzone is initialized on a form element with the class dropzone. Thumbnails for uploaded images are created in a separate container when the upload is successful. Remember to customize the code to fit your specific requirements and styling.