JWT Decoder for Mac
Need to inspect a JWT token from your API response, browser storage, or authorization header? TextStow decodes JSON Web Tokens locally on your Mac — view the header, payload, and claims without sending sensitive tokens to a website.
JWT Tokens Are Everywhere in APIs
Modern APIs use JSON Web Tokens (JWT) for authentication, authorization, and session management. Developers frequently need to inspect JWT tokens from API responses, browser localStorage, cookies, or Authorization headers to debug authentication issues, verify claims, or understand token structure.
Decode JWT Locally from Clipboard
Copy any JWT token and decode it with TextStow built-in JWT decoder from the menu bar. View the decoded header, payload, and claims in readable JSON format — without pasting your token into a web-based decoder or external service.
Keep Authentication Tokens Private
JWT tokens often contain user IDs, roles, permissions, session data, and other sensitive claims. Web-based JWT decoders require you to paste these tokens into their servers. TextStow decodes JWTs locally on your Mac — your authentication tokens never leave your machine.
View Token Structure and Claims
TextStow JWT decoder shows the token header (algorithm, token type), payload (claims, user data, expiration), and decoded values in formatted JSON. Understand what data your application is sending and receiving in each JWT.
Part of a Larger API Debugging Toolbox
JWT decoding works alongside JSON formatting, Base64 encoding, and URL encoding in TextStow. API debugging often requires multiple text operations — inspecting JWTs, formatting responses, encoding parameters — now they are all in one place.
History Makes Decoded Tokens Recoverable
Decoded a JWT earlier but lost it in browser dev tools or terminal? TextStow clipboard history keeps both the original JWT and decoded payload searchable. Find any decoded token, even hours later.
Frequently Asked Questions
Can TextStow decode JWT tokens on Mac?▾
Yes. TextStow includes a JWT decoder that extracts and displays the header, payload, and claims from any JSON Web Token.
Is JWT decoding local and private?▾
Yes. All JWT decoding runs on your Mac with no data upload or network transfer. Your tokens stay private.
Can TextStow verify JWT signatures?▾
TextStow decodes JWT content for inspection but does not verify cryptographic signatures. Use server-side tools for signature validation.
Does the JWT decoder work offline?▾
Yes. The JWT decoder runs entirely offline on your Mac — no internet connection required.
Can I find decoded JWTs later in clipboard history?▾
Yes. Both the original JWT and decoded payload are saved in your searchable clipboard history.
What JWT algorithms does TextStow support?▾
TextStow decodes the JWT structure regardless of signing algorithm (HS256, RS256, etc.). It extracts header and payload content for inspection.
Free Download TextStow
Need to inspect a JWT token from your API response, browser storage, or authorization header? TextStow decodes JSON Web Tokens locally on your Mac — view the header, payload, and claims without sending sensitive tokens to a website.
Free Download