XSS Payload Encoder
Encode XSS payloads for security testing with HTML, URL, JS, and hex encoding.
Encode XSS payloads for security testing and learn how to properly sanitize user input. For authorized penetration testing and educational purposes only.
Prevention Tips
- Always encode output using context-aware encoding (HTML, URL, JS)
- Use Content-Security-Policy headers to restrict inline scripts
- Sanitize input on the server side — never trust client-side validation alone
- Use frameworks that auto-escape by default (React, Angular, Vue)
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