How is HTML entity encoding different from URL encoding?

Entities safely render <, &, etc. in HTML (e.g. <); URL encoding (%20, etc.) is for transport—they serve different contexts.

What's the difference between named and numeric entities?

Named entities like & and < are readable; numeric entities (& or &) can represent any Unicode code point.

It's one important layer, but pair it with CSP, validation, and context-appropriate encoding in JS, URLs, and CSS.

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