Tools

Token Entropy Analyzer for Randomness Checks

Estimate token entropy from length and character variety for quick risk checks.

Token Entropy Analyzer

Estimate how much randomness a token appears to contain based on its length and characters. This helps teams evaluate API keys, session tokens, and secrets for baseline quality.

How to use the Token Entropy Analyzer

  1. Paste the token string.
  2. Click Analyze.
  3. Review the entropy estimate.

Common use cases

  • Reviewing token generation policies.
  • Checking test or seed tokens for weakness.
  • Comparing different token formats.
  • Documenting security standards for keys.

Tips & notes

  • Long tokens with varied characters usually score higher.
  • Entropy estimates cannot confirm cryptographic strength.
  • Use a secure RNG for token generation.

Related security tools

  • API Token Scope Analyzer
  • Password Policy Strength Tester
  • Secrets Exposure Scanner

FAQ

Is this cryptographically accurate?
It is a quick estimate, not a formal proof.
Why unique characters?
More unique characters generally increase entropy.
Does it consider the generation method?
No. It only measures the token string itself.