A fully functional VPN should protect your privacy and mask your location and IP address. If you're unsure if your VPN is working correctly, some tools make checking your VPN's performance easy.You can find out your IP address and location using whatismyipaddress.com. Compare the IP address and location when you're connected with and without a VPN. If they are different, then your VPN is doing its job.It's also possible that your VPN is leaking your data and potentially exposing your online activity. You can run tests on a site like DNS Leak Test to ensure your VPN has no issues with DNS leaks or IP leaks. Plenty of tools allow you to test for leaks, but VPN providers own many, and it may not always be clear who developed the tool, which could be a conflict of interest. You may want to run tests with several different sites and compare the results.