Loading tool…
Decode and inspect JSON Web Token header, payload, and expiry — entirely in your browser.
Decode any JSON Web Token and inspect its header, payload claims, and expiry status — entirely in your browser with no server upload and no account required.
Backend developers debug authentication flows by inspecting token claims without a dedicated API client. Frontend engineers verify token expiry before making protected requests. Security reviewers audit JWT contents for misconfigured claims.
Translate cron strings into readable schedules and next run times.
Generate a tailored .gitignore file for your project stack.
Convert CSV data to JSON and back for APIs and spreadsheets.
Decode browser, OS, and device details from a UA string.