.htmlhintrc

{
  "tagname-lowercase": true,
  "attr-lowercase": true,
  "attr-value-doublequotes": true,
  "tag-pair": true,
  "tag-self-close": true,
  "id-unique": true,
  "src-not-empty": true,
  "style-disabled": true,
  "img-alt-require": true,
  "spec-char-escape": true
}