Free Tools

Free browser tools we build and use ourselves. No sign-up. Most of them run entirely in your browser.

Check your connection

• Is my VPN working?: IP, WebRTC, IPv6 and time zone in one check
• What is my IP
• WebRTC leak test
• IPv6 leak test
• UDP block test: will WireGuard work on this network?
• Speed test

Browser privacy

• Privacy checker: what websites can learn about your browser without cookies or IP
• Link cleaner: strip tracking tags before you forward a link
• QR code reader: see the link inside a code before you open it
• Password generator: nothing is sent to a server

For network people

• Subnet calculator (CIDR)
• WireGuard config generator: keys, PresharedKey and QR code
• Node link parser: vless://, vmess://, trojan://, ss:// to fields and QR
• Data usage calculator

All tools: 404vpn.io/en/tools