HTML Entity Encoder/Decoder - XSS Protection & Live Convert

Encode/decode HTML entities for XSS protection. Local-only privacy—no uploads. Choose unsafe-only or all-chars modes with live conversion and copy. Try now.

How to Use

  1. Paste text containing special characters.
  2. Choose Encode or Decode mode.
  3. Pick “unsafe-only” or “all characters” conversion.
  4. Copy the output into templates, CMS, or code.

Core Features

  • Prevent XSS Attacks: Encode unsafe characters so browsers render text instead of executing markup.
  • Safe/All Characters Mode: Encode only risky characters or encode all non-ASCII characters.
  • Decode HTML Entities: Convert <, &, and more back to readable text.
  • Live Conversion: Convert as you type and copy results instantly.
  • Stay private: Process everything locally in your browser.

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Calculation Logic

  • Encode: Map <, >, &, ", and ' to their HTML entities (e.g., &lt;).
  • Decode: Reverse the mapping using built-in parsing or lookup tables.
  • Goal: Ensure content displays as text, not executable HTML/JS.

FAQ

Why do I need to encode HTML characters?

Browsers treat < as the start of a tag. Encoding it as &lt; forces safe text rendering and reduces XSS risk.

What characters are unsafe in HTML?

The big 5 are: <, >, &, double quotes, and single quotes—especially in user-generated content.

Is my data safe (local/privacy)?

Yes. Conversion runs locally with no uploads or server storage.

Is it free? Any limits?

It’s free and requires no sign-up. Paste and copy anytime.

Does entity encoding fully prevent XSS?

It’s a strong layer, but not a complete solution. Proper context-aware escaping and CSP are still required for full protection.