happytails.ai

File entropy visualizer

Open File entropy visualizer on Happytails.ai. This view has the same page content and links, with explicit tool capabilities. Read the processing notes before using a tool.

Tool capabilities

{
  "id": "file-entropy-visualizer",
  "category": "developer-tools",
  "built": true,
  "requirements": "One file up to 256 MiB, using windows of 256–1,048,576 bytes and at most 4,096 windows. Entropy ranges from 0 to 8 bits per byte. Short windows have sampling limits; high entropy does not prove encryption or compression.",
  "implementation": {
    "fields": [
      {
        "key": "blockSize",
        "label": "Bytes per window",
        "value": 65536,
        "type": "number",
        "min": 256,
        "max": 1048576,
        "step": 1
      }
    ],
    "files": true,
    "input": false,
    "multiple": false,
    "maxFileBytes": 268435456,
    "presentation": "metrics",
    "deferImagePreview": true,
    "note": "Plot Shannon entropy in bits per byte using non-overlapping windows. Maximum 4,096 windows and 256 MiB. High entropy does not prove encryption or compression.",
    "experience": {
      "automatic": false,
      "single": false,
      "inputMaxLength": 1000000,
      "inputMode": "text",
      "label": "Your text",
      "placeholder": "Type or paste your input…",
      "help": "Up to 1,000,000 characters. Review the settings before running.",
      "helpParts": [
        "Up to 1,000,000 characters.",
        "Review the settings before running."
      ],
      "action": null
    },
    "mode": "explicit",
    "interactive": false
  },
  "execution": "Browser interface",
  "api": null,
  "browser_agent": {
    "supported": true,
    "name": "run_current_tool",
    "discovery": "WebMCP on the human page in a supporting browser",
    "verification": "See audit/API-AUDIT.md; availability is not verification"
  }
}

Page guide

Plot Shannon byte entropy across a local file and inspect each window’s measured value.

How to use File entropy visualizer
  1. Choose the local file or files.
  2. Review the action and limits, then run the inspection.
  3. Check the result and download a separate output or report.

Useful next steps

Byte order mark editorLine ending auditorFile hash

Choose a window size

Smaller non-overlapping windows reveal local changes; larger windows reduce sampling variation. A final partial window is included.

Read the measured profile

The chart plots each window at its midpoint. Constant bytes have zero entropy; a uniform distribution of all 256 byte values has eight bits per byte.

Download the evidence

Save the SVG chart, per-window CSV or JSON including the full byte histogram. Interpret the pattern as a measurement, not a file-type or security verdict.