Fast, simple, privacy-friendly utilities for everyday technical work.
The utilities developers reach for every day.
Unix epoch ⇄ human-readable, any timezone.
See your public IPv4 / IPv6, ISP and location instantly.
Geolocation, ASN, organization and reverse DNS for any IP.
Query A, AAAA, MX, TXT, CNAME, NS & SOA records.
Registrar, dates and ownership for any domain.
Validate SPF records and spot lookup limits.
Check DMARC policy, alignment and reporting.
Validity, chain, expiry and issuer details.
Validate WebAuthn RP ID, related origins and app associations.
Beautify, minify and validate JSON.
Decode header, payload and verify claims.
Build and explain cron schedules in plain English.
Everything grouped the way you actually work.
See your public IPv4 / IPv6, ISP and location instantly.
Query A, AAAA, MX, TXT, CNAME, NS & SOA records.
Beautify, minify and validate JSON.
Build and explain cron schedules in plain English.
Median response time is under 40ms. Light, server-rendered pages put the answer first.
No accounts and no data sales. JSON, JWT, Base64 and hash tools run in your browser, so what you paste stays on your device.
No accounts, no paywalls and no "upgrade to continue". Every tool is free to use.
Live DNS and RDAP/WHOIS queries, plus MaxMind GeoLite2, CAIDA and PeeringDB datasets for IP and ASN details.
Bookmark helpers.work and get every developer utility in one fast, clean place.