What is HAR Analyzer?
A HAR (HTTP Archive) file is a JSON dump of all the network activity recorded by the browser's DevTools. This tool analyzes it and summarizes the traffic for you: number of requests, total transferred size, total time and, above all, a waterfall that reveals at a glance which resources take longest.
Export the HAR from your browser's Network tab (Save all as HAR) and upload it here to diagnose why a page loads slowly, without installing anything. The file is processed locally and never uploaded to any server.
Frequently asked questions
Is it free?
Yes, all NewKit tools are completely free.
Is my data sent to a server?
No. Processing happens 100% in your browser, so it is safe even for sensitive data.