HTML Encoder/Decoder

HTML Encoder/Decoder is a free browser-based tool that helps you encode and decode html entities. It is part of ToolsMonk's developer tools collection, so you can finish the job without downloading software, creating an account, or jumping between multiple websites.

This tool is especially useful for workflows such as encoding code or special characters to display safely in html, decoding html entities back to readable characters, and escaping user content to prevent it breaking markup. Because it runs directly in your browser, you can use it on desktop, tablet, or mobile while keeping the process fast and easy for one-off tasks as well as repeat work.

HTML Encoder/Decoder is also a strong fit for people searching for html encoder, html decoder, and html entities, because it combines a simple interface with instant results and privacy-friendly processing.

HTML Encoder/Decoder converts text to HTML entities and back, escaping the reserved characters — < > & and quotes — that would otherwise be interpreted as markup, so you can display code and symbols literally on a web page.

The need arises because HTML gives certain characters special meaning: < and > define tags, & begins entities, quotes delimit attributes. Encoding turns these into safe entities (&lt;, &gt;, &amp;) so the browser shows the literal character instead of treating it as code — indispensable when you want to display a code snippet or a < symbol on a page.

It's also relevant to security: encoding user-supplied content before placing it in HTML is a core defence against cross-site scripting, since it neutralises injected tags. But real XSS protection is context-dependent — HTML body, attributes, JavaScript, and URLs each need different escaping — so use this tool for understanding and quick tasks, and lean on your framework's built-in, context-aware escaping in production.

Don't confuse it with URL encoding, which escapes characters for URLs rather than HTML — the URL Encoder handles that. Everything runs in your browser with nothing uploaded. Pair it with the other ToolsMonk developer tools for encoding, formatting, and debugging.