⚡ 100% Free Online • Browser Web Crypto API

Developer Utilities: Hashes, UUID & JWT Debugger

Calculate SHA-256, SHA-512, and MD5 hashes, generate v4 unique identifiers, and inspect JWT token payloads without transmitting secret keys or payloads to any server!

✓ 100% Free Forever ✓ Zero Server Storage ✓ Web Crypto Subtle ✓ Zero Secrets Leaked

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Cryptographic Hash Generator

Generate SHA-256, SHA-512, and MD5 hashes in real-time using your browser's native Web Crypto engine.

Input Text / String:

SHA-256 Hash: Copy

MD5 Hash: Copy

SHA-512 Hash: Copy

UUID / GUID Generator (v4 Cryptographically Secure)

Generate RFC 4122 compliant version-4 unique identifiers using browser pseudo-random number generator (PRNG).

How Many UUIDs?

JSON Web Token (JWT) Inspector

Decode and inspect encoded JWT headers and claims payloads. Your tokens are decoded locally and never sent across the network.

Encoded Token String:

Header: Algorithm & Token Type

Payload: Data & Expiration

Frequently Asked Questions

Yes. Unlike server-based debuggers, Toflah performs base64url decoding entirely in your client web browser. Not a single token byte is transmitted to our servers or third parties.

Yes. Toflah utilizes the standard Web Cryptography API (`crypto.randomUUID()`) to produce cryptographically random 128-bit version 4 identifiers with negligible collision probability.