curl --request POST \
  --url https://api.iotools.cloud/v1/tool/compression-ratio-calculator \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "originalSize": "10",
  "originalUnit": "MB",
  "compressedSize": "2.5",
  "compressedUnit": "MB"
}
'

{
  "tool": "compression-ratio-calculator",
  "tool_version": "1.0.1",
  "outputs": {
    "ratio": "4:1",
    "details": [
      {
        "metric": "Original size",
        "value": "10 MB"
      },
      {
        "metric": "Compressed size",
        "value": "2.5 MB"
      },
      {
        "metric": "Decimal ratio",
        "value": "4.0000"
      },
      {
        "metric": "Space saved",
        "value": "7.5 MB"
      },
      {
        "metric": "Percentage saved",
        "value": "75.00%"
      },
      {
        "metric": "Percentage remaining",
        "value": "25.00%"
      },
      {
        "metric": "Quality rating",
        "value": "Moderate (2-5:1)"
      }
    ]
  },
  "credits_used": 3,
  "credits_remaining": null
}