Escape and unescape HTML entities • Safe-mode encoding for code display and security
System Definition BlockCross-Site Scripting (XSS) remains one of the most critical security vulnerabilities in modern web applications. If an application reflects un-encoded user input directly into the HTML DOM, attackers can inject malicious JavaScript. Strict HTML entity encoding sanitizes these inputs by neutralizing execution contexts. This tool allows security engineers and developers to instantly verify how their application's WAF (Web Application Firewall) or sanitization logic should encode dangerous payloads.
WebToolkit Pro is engineered for zero-trust environments. This utility processes your sensitive data entirely within your browser using Web Workers.
This utility utilizes the browser's native DOM interface (`document.createElement`) to safely parse and decode complex HTML entities. For encoding, it maps vulnerable structural characters (like `<`, `>`, `&`, `"`, and `'`) into their corresponding safe HTML entities (e.g., `<`). This process ensures that executable script tags are transformed into harmless printable characters.
<p>
To write a paragraph, use the <p> tag.
</p>
<footer>
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</footer>HTML Entity encoding protects against standard reflected and stored XSS when data is inserted directly into HTML body contexts. However, if data is inserted into JavaScript variables, CSS styles, or URL attributes, you must use specialized encoding (like URL Encoding or JS Escaping) to guarantee safety.
Named entities use readable text (like `©` for the copyright symbol), while numeric entities use the exact Unicode decimal or hex value (like `©`). Modern browsers seamlessly parse both formats perfectly.
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Safely encode and decode HTML entities to prevent XSS attacks and ensure correct browser rendering. Convert special characters into secure HTML entities instantly.