helpers.work brings 17 practical utilities for developers, DevOps engineers and sysadmins into one place. Look up DNS, IP, ASN and WHOIS records, check SPF, DKIM, DMARC and SSL certificates, format JSON, decode JWTs, convert Base64, generate hashes, and build cron expressions. Everything is free, with no registration or paywalls. Sensitive data in JSON, JWT, Base64 and hashing tools stays in your browser.