File Size Limits

Set minimum and maximum file sizes. Supports human-readable strings.

(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,
 minFileSize: '10KB',
 maxFileSize: '5MB',
 onValidationError: function(msg, name) { log((name||'file') + ': ' + msg); }
 });
})();

Both ends of the range

maxFileSize defaults to -1 (no limit) and minFileSize to 0. Both accept readable strings as well as byte counts, so '25MB' is equivalent to 26214400.

A minimum is not a strange idea

A maximum protects your storage; a minimum catches a class of user error the maximum cannot — the 0-byte file left behind by a failed export, or the 2 KB placeholder that a camera app writes when a capture goes wrong. Rejecting those at selection time is much kinder than accepting them and failing later in a pipeline.

Client-side limits save a pointless upload; they do not enforce anything. The server has to cap the size while writing bytes rather than trusting a declared length.