HTML Entity Encoder & Decoder

This tool acts as a critical intermediary layer for handling special characters in HTML. When you input raw text, the encoder converts potentially problematic characters (like <, >, &, and ') into their corresponding HTML entity format. For example, if you enter <script>, the output will be encoded to <script>. This process ensures that the browser interprets the data as literal text rather than executable code.

The decoder reverses this process, turning entities like & back into the ampersand symbol (&). We support both named entities (e.g., for a non-breaking space) and numeric entities (e.g., &). The integrated XSS analysis component automatically checks your input against common injection vectors, helping you validate that the encoding process has effectively neutralized potential security risks before deployment.

To achieve the highest level of data safety and compatibility, follow a structured workflow when using this tool. Always encode user input immediately before rendering it to the HTML DOM.

If you are building an application that accepts various inputs (e.g., rich text editors), consider encoding the content multiple times for different contexts: once for standard display, and potentially again if the data will be passed through a legacy system that decodes entities upon receipt. For maximum compatibility across older browsers, ensure you use both named and numeric entity representations when possible.

• Always Encode: Treat encoding as a mandatory step in your development pipeline.
• Test Edge Cases: Test with inputs containing null characters, non-Latin scripts (like Chinese or Arabic), and complex mathematical symbols to verify accurate entity conversion.