Human-Readable Size Options

Pass size values as strings like "10MB" or "2GB" instead of raw byte numbers.

(function() {
 new MultipleUpload('#demo', {
 uploadUrl: '/api/upload',
 multiple: true,
 maxFileSize: '10MB',
 minFileSize: '1KB',
 chunkSize: '2MB',
 chunked: true
 });
})();

Sizes you can read at a glance

Size options accept a string as well as a number, so '10MB' is equivalent to 10485760. The parser understands B, KB, MB, GB and TB, case-insensitively, with or without a space, and takes decimals — '1.5GB' is fine.

What the defaults are, and what an unparseable value does

maxFileSize defaults to -1, which means no limit, and minFileSize to 0. A string the parser cannot make sense of falls back to parseFloat and then to -1, so a typo like '10 megs' quietly becomes “no limit” rather than throwing. Worth knowing, because the failure is a limit that never fires rather than an error you would notice.