utils.asiaJWT Workbench
Generate HS256/384/512 tokens and verify signatures entirely in the browser.
Sign & encode
JWT Workbench
Sign HS256/384/512 tokens with a shared secret, then inspect claims without leaving the tab.
Inspect & validate
JWT verifier
Paste any token to decode its claims, then verify signature + expiry using the shared secret.
Common questions
How does JWT Workbench work?
All processing happens in your browser tab—no server round-trips, no hidden logging, and no throttling.
Can I trust the output for production?
Every tool is intentionally minimal, runs client-side, and is tested against common SEO and growth workflows. Validate critical data before publishing.
Will this tool stay free?
Yes. The core library remains free to use. Future subscription tiers will only unlock premium batching or API endpoints.