HTML Entity Encoder & Decoder
Encode special characters into HTML entities (<, >, &) to prevent XSS vulnerabilities, or decode entities back to plain text.
100% Client-Side Privacy
All computation happens right in your browser's JavaScript engine. No data is ever sent to any remote server.
Instant Results
Zero network latency. Calculations and formatting are executed instantly with high cryptographic and mathematical precision.
Works Offline
Once loaded, this tool can function completely offline with no active internet connection required.
Frequently Asked Questions
Why should I encode HTML entities?
Encoding entities prevents Cross-Site Scripting (XSS) by ensuring user-supplied characters like < and > are treated as text rather than executable markup.
Does this support named and numeric entities?
Yes! Both named entities like © and numeric decimal entities like © are fully decoded.