HTML Encoder / Decoder
Encode raw HTML into safe entity references or decode entities back to raw HTML.
About this tool
HTML encoding converts characters with special meaning in HTML into their entity equivalents so they render as literal text instead of being interpreted as markup. For example, < becomes <, > becomes >, and & becomes &. This is a fundamental technique for preventing XSS (Cross-Site Scripting) vulnerabilities in web applications.
Whenever you display user-generated content or untrusted data in an HTML page, encoding it first prevents malicious scripts from executing. This tool helps you quickly encode text for safe HTML embedding or decode HTML entities back to their original characters when you need to work with the raw content.
HTML decoding is equally useful: API responses, database fields, and email templates often contain HTML entities that need to be converted back to readable text for further processing. Understanding when and why to encode HTML is a core web security skill.