HTML Entity Encoder / Decoder
Encode text to HTML entities or decode entities back to plain text instantly.
Knowledge Base & Educational Companion: Why HTML entities exist
HTML entities represent characters that would otherwise be interpreted as markup, or that are hard to type. Encoding them keeps pages valid and displays symbols reliably.
1. Reserved characters
Characters like <, > and & have structural meaning in HTML. Encoding them as <, > and & lets you display them as text instead of breaking the page.
2. Named vs numeric
Entities come as friendly names (©) or numeric code points (©). Numeric entities can represent any Unicode character, even without a named shortcut.
3. Preventing injection
Escaping user input into entities before inserting it into a page is a core defence against cross-site scripting (XSS), keeping content from executing as code.
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