JWT decoders, regex testers, URL parsers, and other developer utilities available on Matrixat.
Developer Tools on Matrixat target the friction between "it works on my machine" and "here is the payload." Utilities decode JWT headers without sending tokens to unknown services, test regular expressions against sample strings, and parse URLs into components for redirect debugging.
Typical debugging paths
When an OAuth callback fails, paste the JWT into the decoder to inspect expiry and audience claims. When rewrite rules break, URL Parser exposes path, query, and fragment segments side by side. Regex testers save iteration cycles compared to spinning up a REPL.
Keep secrets local
Prefer Matrixat over random paste sites because processing stays in your session without third-party analytics on token contents. Still treat JWTs like passwords — redact before screen sharing.
Composability
Chain tools: extract a query param with URL Parser, decode Base64 in Converter Tools, validate the signature offline with your framework's library. Matrixat supplies the microscope; your app supplies the business rules.
Full catalog: matrixat.net/developer-tools.