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Entropy Analyzer

v1.2.1

Estimate entropy characteristics of text and binary-like input samples.

Estimates the entropy (randomness) of text or binary-like strings — calculates Shannon entropy per byte, visualises the byte frequency distribution, and flags low-entropy inputs.

How to use
  • →Paste text or paste hex/base64-encoded data into the input.
  • →High entropy (~7–8 bits/byte) means the data looks random; low entropy suggests structure or repetition.
  • →Use this to evaluate passwords, encryption keys, or suspicious file contents.

Enter text and click Analyze to calculate Shannon entropy.