JWT Lens vs Monkeytail

JWT Lens is a fast, private JSON Web Token decoder and verifier for developers — a Safari extension that works entirely on your device. Tap the toolbar icon, paste a token (or grab the text you've selected on the page), and instantly see: • Pretty-printed, color-coded Header and Payload • Human-readable timestamps — exp, iat and nbf shown in your local time with relative phrasing ("expires in 59 minutes") • An at-a-glance expiry badge: valid, expired, or not yet valid • Plain-English descriptions of standard claims (iss, sub, aud, and more) Need to check a signature? JWT Lens verifies HS256/384/512, RS256/384/512, PS256/384/512 and ES256/384/512 using a secret or PEM public key you provide — all computed locally with the system's WebCrypto, never sent anywhere. Privacy by design: • No network requests — ever • No analytics, no tracking, no accounts • Nothing is stored: tokens and keys live only in the popup while you use it Whether you're debugging OAuth / OIDC flows, inspecting a bearer token, or learning how JWTs work, JWT Lens keeps it quick, clear, and completely on-device. Universal app: works in Safari on macOS, iOS and iPadOS.

Monkeytail is a native request debugger for iPhone, iPad, Mac, and Apple Vision Pro. The compact Apple Watch companion sends favourite requests copied from iPhone. No Monkeytail account or sign-in. • Import cURL, Postman collections, Insomnia JSON, and OpenAPI or Swagger JSON/YAML. • Organize nested folders with shared headers, authentication, variables, and JavaScript hooks. • Use OAuth 2.0 with PKCE and refresh tokens, API keys, Basic, Bearer, and AWS Signature V4. • Manage cookies and client certificates. Inspect request timings, redirects, and TLS details. • Edit GraphQL queries and variables, browse schema fields, and inspect WebSocket or SSE messages. • Format JSON, browse a tree, search, run visual response tests, and inspect images, audio, video, hex, or binary data. • Save and compare responses, create offline mocks, and export Swift, JavaScript, Python, or Kotlin client code. • Sync workspaces with optional iCloud Drive. Choose proxies. Browser TLS/HTTP2 profiles are available on iOS and Mac. Free, with no in-app purchases, analytics, tracking, or data collection by Kitta Co. Requests go to servers and proxies you choose. Keychain storage is optional. Choose whether credentials join iCloud sync. Cookies, client certificates, and upload files remain on your device. Requires iOS 17 or macOS 14 or later. Client certificate import on Mac requires macOS 15. Import, schema validation, and scripting support the documented subset.