HTML Encoder & Decoder

If you insert user-supplied text directly into an HTML page without encoding it, a malicious user could inject <script> tags or event handlers — this is a Cross-Site Scripting (XSS) attack, one of the most common web vulnerabilities. Encoding converts < to < so the browser displays it as text rather than interpreting it as HTML. Always encode user input before inserting it into HTML. Modern frameworks like React and Vue do this automatically; raw DOM manipulation in JavaScript does not.

"Strip tags" removes all HTML markup, leaving only the raw text content — useful for turning a rendered HTML document into plain text (e.g. for sending in a plain-text email or feeding into a word counter). "Decode" converts HTML entities back to their characters without removing the tags themselves — useful when you have encoded HTML and want to see the actual HTML source. Use strip when you want plain text; use decode when you want readable HTML.