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ValidateHTML

Missing Charset Declaration

The charset declaration tells the browser how to decode the bytes of your HTML file into characters. Without it, the browser guesses, and may guess wrong, turning special characters (accents, emojis, symbols) into garbled text (mojibake).

Why It Matters

Missing charset can cause text to display incorrectly: accented characters (é, ñ, ü) show as garbage, emoji break, and currency symbols appear wrong. UTF-8 covers virtually all characters in all languages.

Code Examples

❌ Invalid
<head>
  <title>My Page</title>
</head>
✓ Valid
<head>
  <meta charset="UTF-8">
  <title>My Page</title>
</head>

How to Fix

  • 1Add <meta charset="UTF-8"> as the first element inside <head>.
  • 2It must appear within the first 1024 bytes of the document.
  • 3Ensure your file is actually saved as UTF-8 (check your editor's encoding settings).
  • 4UTF-8 is the only charset you should use in 2026. It supports all languages and emoji.

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