JWT Libraries by Language
Production-grade JWT libraries for every major language, with notes on which to pick and when. Each card links to a full sign-and-verify guide for that language.
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Node.js
jsonwebtoken, jose
jsonwebtoken for HS256/RS256 with a simple synchronous API. jose for every JOSE algorithm (EdDSA, ES256K, JWE), JWKS verification with built-in caching, and maintained modern code.
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Python
PyJWT, SimpleJWT
PyJWT is the low-level library (needs the cryptography extra for RS256/ES256/EdDSA). Django SimpleJWT is a DRF authentication layer built on PyJWT. FastAPI users wrap PyJWT in a dependency.
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Java
Spring Security, jjwt
Spring Security's OAuth2 Resource Server (NimbusJwtDecoder) for verifying tokens from external IdPs: handles JWKS, caching, and claim validation declaratively. jjwt for signing tokens or verifying outside Spring.
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Go
golang-jwt, go-jose
github.com/golang-jwt/jwt/v5 is the maintained successor to the deprecated dgrijalva/jwt-go. github.com/go-jose/go-jose/v4 for JWKS, EdDSA, and the full JOSE suite. Use keyfunc for JWKS caching.
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PHP
firebase/php-jwt, tymon/jwt-auth
firebase/php-jwt is the standard library (pass a Key object with the algorithm since 6.0). tymon/jwt-auth is a batteries-included Laravel JWT guard. Laravel Sanctum issues opaque tokens, not JWTs.
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Rust
jsonwebtoken
The jsonwebtoken crate supports HS256/384/512 and RS256/384/512 natively. ES256/384 and EdDSA support varies by version: check release notes. Use jwks-client or your own cache for JWKS verification.
How to choose a JWT library
Pick the library that matches your algorithm needs and your framework. For HS256/RS256 only, the simplest library in your language is fine (jsonwebtoken, PyJWT, golang-jwt, firebase/php-jwt). For EdDSA, JWE, or JWKS verification with built-in caching, use the JOSE-spec library (jose, go-jose) or a JWKS helper (keyfunc, PyJWKClient). Inside Spring Boot, Spring Security's OAuth2 Resource Server handles verification declaratively: use jjwt only when you need to sign tokens or verify outside Spring. See the EdDSA library-support matrix for per-language EdDSA support.
What every JWT library must do
Regardless of language, a correct JWT verification call hardcodes the
algorithm (never reads it from the token header), verifies the signature
against the right key, and validates
exp, iss, and aud. Most libraries
do signature and exp by default but make
iss and aud opt-in: always pass your expected
issuer and audience explicitly. See the
claims reference and the
security guide for the rules every library
expects you to enforce.