A suite of precision developer tools — API testing, JSON transformers, regex builders, and more. Stop context-switching. Start building.
Hand-picked utilities covering the full development lifecycle — from API design to deployment checks.
Send HTTP requests, inspect headers, chain endpoints, and save collections — right in the browser.
Coming soonLint, format, diff, query with JMESPath, and convert to YAML, TOML, or CSV in one click.
Try it free →Build and test regex patterns live against real inputs with named groups, flags, and match highlighting.
Try it free →Decode, inspect, and verify JSON Web Tokens. Validate signatures against JWKS endpoints.
Try it free →Visual cron expression editor with a human-readable parser, upcoming run previewer, and timezone support.
Try it free →Auto-format and prettify SQL for Postgres, MySQL, SQLite, and BigQuery. Spot anti-patterns instantly.
Coming soonDecode, parse, and build URLs. Follow redirect chains and inspect response headers step by step.
Coming soonEncode, decode, and hash strings with MD5, SHA-1, SHA-256, and bcrypt — offline-first and private.
Try it free →Connect, send messages, and inspect frames in real-time. Log session history to a shareable link.
Coming soonNo bloat. No dark patterns. Every tool is designed to get out of your way and let you ship.
Everything runs in your browser. Your tokens, queries, and payloads never leave your machine.
Save and share tool configs, request collections, and regex patterns with your whole team.
Automate any tool from your pipeline. Trigger JSON transforms, linting, and hashing via REST or npx.
Designed ground-up for dark environments. No blinding white flashes, ever.
$ devcrate jwt decode --token
eyJhbGciOiJSUzI1NiJ9...
✓ Header
alg: RS256
typ: JWT
✓ Payload
sub: "user_9kx3p"
iat: 1742549200
exp: 1742552800 ✓ valid
scope: "read write"
✓ Signature verified via JWKS
$
No per-seat gotchas, no feature gating on core tools. Pay for what you actually use.
Stop switching between tabs and half-baked tools. Everything you need, in one place, free to start.