Works with any backend npm install Zero dependencies
Image Dimension Limits

Enforce minimum and maximum width/height for image uploads.

(function() {
    var logEl = document.getElementById('log');
    function log(m) { var d = document.createElement('div'); d.className='pkg-log-entry'; d.textContent=m; logEl.appendChild(d); logEl.scrollTop=logEl.scrollHeight; }
    new MultipleUpload('#demo', {
        uploadUrl: '/api/upload',
        multiple: true,
        accept: 'image/*',
        minImageWidth: 200,
        minImageHeight: 200,
        maxImageWidth: 4000,
        maxImageHeight: 4000,
        onValidationError: function(msg, name) { log((name||'file') + ': ' + msg); }
    });
})();