Hash & Crypto

Hashing, key generation and encryption checks

Tools in this category

13

Text Hash Compute MD5 and SHA family digests. UUID Generator Batch-generate random v4 UUIDs. ULID Generator Generate lexicographically sortable ULIDs. Password Strength Rate password strength and estimated crack time. Random Token Generator Generate random strings with custom rules. JWT Decoder Decode JWT segments and check expiry. AES Encrypt / Decrypt AES-GCM encrypt and decrypt with a passphrase. BIP39 Mnemonic Generate or validate wallet mnemonics. RSA Key Pair Generate RSA key pairs and export as PEM. bcrypt Hash & Verify Generate bcrypt hashes and verify passwords. HMAC Generator Compute an HMAC digest for a message. IBAN Validator Validate IBANs and parse country details. PDF Signature Check Inspect PDFs for digital signatures.

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Convert between text encodings and data formats

Data & Format12

Convert and beautify JSON, XML, YAML, CSV

Regex, cron, JWT, SQL and everyday dev helpers

IP, subnet, MAC and port calculations

Case, stats, dedupe and cleanup for text

QR codes, placeholders and image helpers

Percentages, temperature, dates and units

Hand-eye coordination and reaction speed

Sequence and working memory training

Sustained attention and rhythm control

Logic, pattern recognition and thinking games