Developer Debug Tools
JSON, JWT, SQL, Regex & API debugging tools in one place
Developer Debug Tools launched on May 17, 2026.
What it does
Free browser-based developer tools for JSON formatting, SQL formatting, Base64 encoding, JWT decoding, regex testing, timestamps, logs, and API debugging. No installation required.
Inspect, validate, decode, convert and debug JSON payloads, JWT tokens, logs, headers, encoded values and timestamps directly in your browser.
Search tools to format JSON, decode JWTs, convert timestamps, test APIs, encode data and debug without leaving your browser. Choose the workflow that matches what you are investigating. Each path connects focused tools instead of dropping you into a wall of utilities. Format responses, validate JSON, inspect schemas and compare payload changes. Read claims, check expiry and spot risky token configuration without confusing decode with verification. Clean noisy logs, extract trace IDs and connect failures across service boundaries. Compare Unix seconds, milliseconds, UTC and local dates while debugging events and token expiry. Move between JSON, YAML, Java DTOs and request formats without…from developerdebugtools.com
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