All tools

2FA codes Featured Paste a secret or a QR image and get the 2FA code. Code reader Featured Read QR codes from an image or straight from the camera. Password generator Featured Generate strong passwords and score their strength. JWT decoder Split a JWT into three parts, read the claims and check the signature. QR generator Featured Create a QR code from any text or link.

IP lookup Featured See your own IP and look up any address. DNS records Look up A, AAAA, MX, TXT and NS records for a domain. Subnet & CIDR Featured Work out IPv4/IPv6 blocks: mask, host range, subnetting. MAC lookup Find the vendor behind a MAC address, reformat it, build the EUI-64. WHOIS Who registered this domain or IP range, and until when. Port check Featured Probe common TCP/UDP ports to see which are open. TCP latency Measure latency to a host with a TCP handshake. Proxy checker Featured Check whether HTTP, SOCKS4 and SOCKS5 proxies are alive and how well they hide your address. SSL/TLS check Inspect a TLS certificate: days left, name match, and which TLS versions the server takes. Reverse IP lookup Find the domains that point at one IP address. Spam blacklists Check whether an address sits on anti-spam blocklists. Mail security Check a domain SPF, DMARC, MX and MTA-STS records.

Unit converter Featured Convert units: length, mass, temperature, data size and more. Number base converter Convert between binary, octal, decimal, hex and read the bits. Time converter Convert Unix timestamps to dates and between time zones. Colour converter Convert HEX, RGB, HSL and CMYK, and score WCAG contrast.

Text tools Featured Sort, filter, encode and hash text in bulk. ID generator Generate UUIDs, ULIDs and Nano IDs, or inspect an existing one. Cron reader Explain a cron expression and list its next runs.