Password Generator
Generate strong random passwords with customizable options.
Base64 Encoder / Decoder
Encode text to Base64 or decode Base64 back to text.
JSON Formatter / Validator
Beautify, minify or validate JSON. Runs entirely in your browser.
Unix Timestamp Converter
Convert between Unix timestamps and human-readable dates.
Hash Calculator
Compute SHA-1, SHA-256, SHA-384, SHA-512 hashes using Web Crypto API.
URL Encoder / Decoder
Encode special characters for URL query strings, or decode back.
UUID Generator
Generate random UUID v4 identifiers using crypto.randomUUID.
JWT Decoder
Decode JWT header and payload (not verify signature). Payload stays in your browser.