.html-minifier.conf

{
  "removeComments": true,
  "collapseWhitespace": true,
  "conservativeCollapse": true,
  "collapseBooleanAttributes": true,
  "removeAttributeQuotes": true,
  "removeRedundantAttributes": true,
  "useShortDoctype": true,
  "removeEmptyAttributes": false,
  "removeOptionalTags": false,
  "removeEmptyElements": false,
  "lint": false,
  "keepClosingSlash": true,
  "caseSensitive": true,
  "minifyJS": true,
  "minifyCSS": false
}