Paste-and-run developer helpers

Debug tokens, configs, and patterns in the browser UI while processing stays on the server.

Tools in this hub

Start with a working Utiline tool

Paste a JSON Web Token to read its header and payload or check expiry-related claims—useful for debugging login issues.

Hash short text with SHA-256, SHA-1, or MD5 and get a hex digest—handy for checksums, tests, and debugging.

Create random UUID version 4 IDs or deterministic version 5 names from a namespace and string—generated on Utiline servers.

Pretty-print, minify, or syntax-check JSON. Paste messy JSON and get readable output or a clear error location.

Move between YAML and JSON for configs and snippets. Paste one format and copy the other.

Test whether a pattern matches or extract groups from sample text—flags for case, multiline, and dot-all included.

Check email syntax, see a normalized form, and optionally run slower MX lookups—MX is off by default for speed.

Check HMAC-SHA256 webhook signatures—raw hex or base64 body digests or Stripe-style t=...,v1=... headers.

Related hubs

FAQ

No. Telemetry records tool slugs and status only.

See Utiline developer docs at /api-docs for API keys and higher throughput.