Developer calculators and tools
Format and inspect data locally. DNS and SSL checks use clearly identified external providers only when requested.
Developer
JSON Formatter & Validator
Validate, format, search and convert JSON locally with precise errors and downloadable output.
DeveloperSQL Formatter
Format SQL locally for PostgreSQL, MySQL, SQL Server and SQLite without executing queries.
DeveloperDNS Lookup Tool
Look up public DNS records through Cloudflare or Google with DNSSEC response status.
DeveloperSSL Checker
Check public HTTPS certificate and protocol reports through SSLtest, with progress and clear limits.
DeveloperJWT Decoder
Decode JWT claims locally and optionally verify HS256 or RS256 signatures with your own key.
DeveloperRegex Tester
Test JavaScript regular expressions, captures and replacements locally in a time-limited worker.