regex101
Focus: regex and testing. Shares developer tools and debugging with JWT.io. Rated 4.8 (JWT.io: 4.6).
Web AppFreeWeb
4.8Visit
Web App
JWT.io
Decode, verify and learn about JSON Web Tokens in the browser.
Rating
4.6 / 5
Pricing
Free
Difficulty
Intermediate
Works on
Web
Built with love by Shushant Lakhyani. Building bestproductivityresources.com
What is JWT.io?
JWT.io lets you paste a JSON Web Token to see its header and payload decoded, check the signature with your secret or key, and read a clear introduction to how JWTs work. It is maintained by Auth0, free to use, and also lists JWT libraries for many languages.
Pros: what JWT.io does well
- Instant token decoding
- Signature checking
- Good introduction to JWTs
Cons: where it falls short
- Never paste production secrets
- Run by a vendor with paid products
Who JWT.io is for
Developers debugging login and API authentication.
Who can skip it
People who do not work with web authentication.
JWT.io alternatives
Not sold on JWT.io? These do a similar job, and each card says what it has in common.
Regexper
Focus: regex and diagrams. Shares developer tools and debugging with JWT.io. Same 4.6 rating.
Web AppFreeWeb
4.6Visit
DevDocs
Focus: documentation, api reference and open source. Shares developer tools with JWT.io. Adds Offline. Rated 4.7 (JWT.io: 4.6).
Web AppFreeWeb, Offline
4.7Visit
RegExr
Focus: regex, testing and patterns. Shares developer tools with JWT.io. Rated 4.7 (JWT.io: 4.6).
Web AppFreeWeb
4.7Visit
The Missing Semester
Focus: command line, git and mit. Shares developer tools with JWT.io. A course, not a web app. Rated 4.8 (JWT.io: 4.6).
CourseFreeWeb
4.8Visit
GitHub Student Developer Pack
Focus: students, free credits and education. Shares developer tools with JWT.io. A website, not a web app. Rated 4.7 (JWT.io: 4.6).
WebsiteFreeWeb
4.7Visit
Free alternatives to JWT.io
Want to spend nothing? These free picks cover similar ground.
httpbin
Focus: http and api testing. Shares debugging and developer tools with JWT.io. Rated 4.5 (JWT.io: 4.6).
Web AppFreeWeb
4.5Visit
Webapp Testing Skill
Focus: claude, claude skills and playwright. Shares debugging and developer tools with JWT.io. An AI tool, not a web app. Adds macOS, Windows and Linux. Rated 4.8 (JWT.io: 4.6).
AI ToolFreeWeb, macOS
4.8Visit
JSONPlaceholder
Focus: fake api, rest and json. Also in Learning and Workflows, like JWT.io. Rated 4.7 (JWT.io: 4.6).
Web AppFreeWeb
4.7Visit
CSS Grid Generator
Focus: css grid, layout and front end. Also in Learning and Workflows, like JWT.io. Same 4.6 rating.
Web AppFreeWeb
4.6Visit
Layoutit Grid
Focus: css grid, layout and generator. Also in Learning and Workflows, like JWT.io. Same 4.6 rating.
Web AppFreeWeb
4.6Visit
Wakamai Fondue
Focus: fonts, opentype and typography. Also in Learning and Workflows, like JWT.io. Same 4.6 rating.
Web AppFreeWeb
4.6Visit
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