Giacomo Balli profile picture

Giacomo Balli

Innovation consultant specializing in mobile strategy

Let's Chat

Get API or File Size

This code sample will allow you to retrieve the size of a file or API response without actually downloading it (server needs to provide Content-Length header).

function getApiSize(url) {
var req = new XMLHttpRequest();"HEAD", url, false);


- Call getApiSize(url); and you will see the size in your console.

This snippet focuses on iOS development. Make sure to verify/adapt any vendor prefixes.

Back to main listing.

Published: Mon, 11 Jan 2016 02:48:03 +0000