About WebCryptoTools
WebCryptoTools was created to solve a persistent, dangerous problem in modern software engineering: developers pasting confidential API tokens, secret keys, and client hashes into outdated, insecure online formatters that log payloads to foreign cloud servers.
Our Core Philosophy
All cryptographic computations execute locally inside your browser thread. No backend server ever receives your input.
Powered by the W3C Web Cryptography API, utilizing your CPU's dedicated cryptographic instructions for maximum speed.
No account walls, no intrusive popup advertisements, no credit card paywalls, and zero daily rate limits.
The 105 Tool Architecture
Rather than bookmarking dozens of different single-purpose websites from 2012, WebCryptoTools brings together 105 essential utilities in a unified, modern, dark-mode developer environment:
- Hashing & Checksums: SHA-256, SHA-512, MD5, Keccak-256, BLAKE3, and CRC32.
- Passwords & Keys: Bcrypt hashing and verification, PBKDF2 derivation, HMAC signatures, and entropy estimation.
- Tokens: Full-featured JWT decoder and claim validator, API key generation with custom prefixes.
- Ciphers: Authenticated AES-256-GCM, AES-CBC, and ChaCha20-Poly1305.
- Asymmetric Keys: RSA 2048/4096-bit PEM keys, Ed25519 pairs, and OpenSSH formats.
- Identifiers & Web3: RFC 9562 UUID v7, ULID, NanoID, and BIP-39 mnemonic phrases.