Developer Tools

Everyday developer utilities that just work when you need them mid-task — API key generation, JWT decoding, and more. They run locally in your browser and never transmit the values you paste, which is exactly what you want for anything sensitive.

API Key Generator Generate secure random API keys, tokens, and secrets. Choose length, format, and prefix instantly.

JWT Debugger Decode JSON Web Tokens to inspect the header and payload. View claims and expiry in readable JSON.

Secret Scanner Scan text for leaked API keys, tokens, and credentials. Highlights matches by severity and generates a redacted copy — all in your browser.

Unix Timestamp Converter Convert Unix timestamps to human-readable dates and back. Auto-detects seconds or milliseconds, with local, UTC, ISO, and relative time.

SHA-256 Hash Generator Generate SHA-256, SHA-1, SHA-384, and SHA-512 hashes from any text, right in your browser with the Web Crypto API.

Regex Builder (Visual) Build regular expressions visually by clicking blocks like digit, letter, email, or URL. See the generated pattern and live match highlighting as you go.

UUID, ULID & NanoID Generator Free modern ID generator for UUID v7 (time-sortable), UUID v4, ULID and NanoID. Bulk-generate hundreds at once with format options, plus a built-in timestamp decoder. 100% in your browser.