HTML Entity Encoder & Decoder
Convert special characters into HTML named entities (&), decimal (&), or hexadecimal (&) format.
How to Use HTML Entity Encoder & Decoder
1. Enter or Paste Input
Paste your raw data, code payload, or text document directly into the editor.
2. Instant In-Browser Processing
Formatting, validation, or transformation algorithms execute locally with zero network latency.
3. Copy or Export Output
One-click copy formatted outputs or download clean generated files immediately.
How This Utility Works
Safely encode and decode HTML entities directly in your browser. Prevents XSS vulnerabilities and markup breaking by converting reserved HTML characters (&, <, >, ", ') and extended typography into named entities, decimal codes, or hex references with real-time character deltas.
Tokens, internal JSON payloads, and source code are parsed strictly inside your local browser runtime. Zero bytes are uploaded to remote servers.
Frequently Asked Questions
Why should I encode HTML special characters?
Characters like <, >, and & can be interpreted as HTML tags or scripts by browsers. Converting them to entities ensures they are safely displayed as raw text without risking Cross-Site Scripting (XSS).
What is the difference between named, decimal, and hex entities?
Named entities (like &) use mnemonic names, decimal entities (like &) use ASCII/Unicode integer codes, and hex entities (like &) use hexadecimal numbers. All three render identically in modern web browsers.
Escape & Encode HTML Entities in Shell
Run directly in your terminal without installing external heavy dependencies
$ python3 -c 'import html, sys; print(html.escape(sys.argv[1]))' "<script>alert(1)</script>"Escapes &, <, >, ", and ' characters into safe HTML entities.
$ node -e 'console.log(process.argv[1].replace(/[&<>"\']/g, m => ({"&":"&","<":"<",">":">","\"":""","\'":"'"}[m])))' "<script>"One-liner to escape vulnerable HTML characters into sanitised entities.