WebRTC Leak Test

Base64 Encoder & Decoder

Both directions, Unicode-safe, with the URL-safe alphabet when you need it.

Browser Fingerprint Test

Every signal your browser hands over automatically, and how much each one narrows you down.

DNS Leak Test

Check whether your DNS requests are leaking outside your VPN.

DNS Lookup

Every record a domain publishes, with what they imply about its mail and certificates.

Full Privacy Check

One pass over everything you leak: IP, DNS, WebRTC, fingerprint and timezone.

IP Address Lookup

Look up the location, ISP and network of any IP address.

JSON Formatter

Format, validate and inspect JSON — with an error that points at the character.

JWT Decoder

Read a token’s header and claims, and see what it says about itself. Decoding, not verification.

Password Generator

Cryptographically random passwords and passphrases, built on your device.

Regex Tester

Test a pattern against real text, with matches highlighted and a hard stop on runaway backtracking.

Security Headers Checker

What each header does, what yours actually says, and the line to add. No letter grade.

SSL Certificate Checker

Read the certificate a site actually presents — including the broken ones your browser refuses to show you.

Subnet Calculator

Network, broadcast, host range and mask for any IPv4 address and prefix.

VPN Protocol Recommender

Five questions, then a straight answer — including “you do not need the stealthy one”.

What Is My IP

See your public IP, location, ISP and network — instantly.

ASN Lookup

Which network announces an address, and which prefix it sits in.

CIDR Calculator

Turn a CIDR block into its address range — or a range into the smallest blocks that cover it exactly.

Cron Parser

Read a cron expression in plain English, and see exactly when it will next fire.

Internet Speed Test

Measure your real download and upload speed, ping and jitter.

IPv4 to IPv6 Converter

The four ways an IPv4 address appears inside IPv6 — and why none of them is “your IPv6 address”.

Password Strength Checker

See what an attacker recognises in your password, and how long it really survives.

Subnet Mask Converter

Convert between /24 and 255.255.255.0, in either direction, with the whole table.

Unix Timestamp Converter

Timestamps to dates and back, with the unit worked out for you and stated.

URL Encoder & Decoder

Percent-encoding in all three flavours, side by side, so you can see which one you want.

UUID Generator

Generate v4 or time-ordered v7 UUIDs, and inspect any UUID you already have.