ID, Password and Hash Tools
- Generate fresh IDs for tests and placeholders
- Create strong passwords, JWT checks and live TOTP codes
- Handle quick one-off verification and key-related tasks
A technical article on RSA public and private keys, why padding matters, how signing differs from encryption, and why demos are not key management.
JWTs Explained: Decoding Claims Without Confusing Them With ValidationA practical explanation of JWT structure, claims, Base64URL encoding, signatures, and why decoding a token is not the same as trusting it.
UUIDs Explained: Versions, Randomness, Sorting, and Safe UseA technical guide to UUID versions, why v4, v5, and v7 behave differently, and where UUIDs are useful or misleading in application design.
SHA-256 Explained: Hashes, Integrity Checks, Salts, and MisuseA practical guide to SHA-256 hashing, file integrity checks, password caveats, collision resistance, and why hashes are not encryption.
Format JSON, XML, YAML, TOML, encode text, inspect headers, and validate technical data quickly.
Time, Date and Schedule ToolsConvert timestamps, time zones, cron expressions, and time-based codes for real work.
Cryptography and Security ToolsWork with JWT, hashes, TOTP, AES, DES, RSA, and password generation from one security toolbox.
Tools In This Collection
UUID Generator
Generate UUID v1, v3, v4, v5, v6 and v7 with namespace, batch output, uppercase and hyphen options.
SHA Hash Generator
Generate SHA-1, SHA-256, SHA-384 and SHA-512 hashes for text or small files.
Password Generator
Generate strong random passwords with length, character sets, memorable mode and ambiguity filters.
TOTP Generator
Generate current TOTP codes from a secret or otpauth URI with configurable digits, period and algorithm.
JWT Decoder
Decode JWT header and payload locally, inspect claims, expiry times and raw Base64URL segments.
RSA Key Tool
Generate browser-side RSA key pairs and use them for short text encryption, decryption, signing and verification.
JWT Encoder
Generate HS256, HS384 or HS512 JSON Web Tokens directly in the browser for testing and local workflows.