HTML Encode Decode Tool

HTML Encoder/Decoder is a professional online tool for converting HTML special characters to safe entity formats and performing reverse decoding operations. It helps front-end developers, website security engineers, content creators, and CMS administrators effectively protect against cross-site scripting (XSS) attacks, ensuring web content is displayed safely. The tool offers a bidirectional interface: Encode mode converts HTML tags, quotes, angle brackets, and other special characters into corresponding HTML entities (such as <, >, "), preventing browsers from interpreting them as executable code; Decode mode restores entity-encoded text back to original HTML markup for easy debugging and content editing. In everyday development, HTML encoding is widely used in user input filtering, rich text content display, comment system protection, email template generation, and more. Unencoded user input containing malicious scripts can lead to website injection attacks and data breaches. With a clean and simple interface, users just paste text or upload content, click the corresponding button, and instantly get the encoded or decoded result, with one-click copy support for easy use. Whether building secure message boards, displaying user-generated content, or processing third-party data imports and exports, HTML Encoder/Decoder provides reliable security conversion support, making it an essential basic tool for web security protection and content management workflows.