Drop in your LinkedIn connections and get a custom report.
The only real wait is LinkedIn building your file. Everything on this end is seconds.
Your connections file is read by code running inside this browser tab, on your own computer. It is never uploaded, sent, or stored anywhere. There is no server-side step in this tool. The page is a single static file that has no way to receive data.
When you close the tab, the data is gone. Nothing about you or your network is saved.
You can verify this yourself. Turn off your wifi after the page loads, then upload your file. The report still runs, because nothing it does needs the network.