Token / API Key Generator
Generate secure random tokens and API keys with custom length and character sets.
Knowledge Base & Educational Companion: Generating Secure Tokens
Tokens and API keys authenticate requests and protect resources. Their security rests entirely on being long and drawn from a truly random source that an attacker cannot reproduce.
1. Entropy Over Cleverness
A token's strength comes from raw entropy, not a clever pattern. Every character is sampled from crypto.getRandomValues, so longer keys grow exponentially harder to guess.
2. Choosing a Character Set
Hex is easy to log and store; alphanumeric is compact and URL-safe; Base64url packs the most entropy per character. Pick the set your system expects.
3. Prefixes Aid Operations
Prefixing keys (like 'sk_live_') helps teams identify a token's purpose and environment at a glance, and lets secret scanners detect leaks faster.
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