obsolete-but-conforming

Detect obsolete but conforming features.

Severity

warning

❌ Incorrect

<img src="x" alt="x" border="0">

✅ Correct

<img src="x" alt="x">

Reference

• HTML Standard - Non-conforming features

Configuration

{
  "rules": {
    "obsolete-but-conforming": "error"
  }
}