HTML Entity Encoder / Decoder
Input
0 bytes
Result
0 bytes
All processing happens in your browser — your files are never uploaded to a server.
About this Tool
AllThatConverter's HTML entity encoder and decoder is a free online tool that converts special characters to HTML entities (&, <, >, ", etc.) and back. It is essential for web security (XSS prevention), safe display of special characters in HTML source, and template engine escaping. All processing runs locally in your browser with no uploads. No registration required, completely free.
100% Secure Local Processing Active
This tool runs entirely on your device via WebAssembly and browser Canvas. No files are ever sent to any remote server, ensuring complete data security.
How to Use
Paste the HTML or text you want to convert into the input area.
Click 'Encode to Entities' or 'Decode Entities'.
The result appears instantly in the output area.
Click 'Copy' to copy the result and paste it into your HTML file or code.
HTML Entity Converter Use Cases
XSS Attack Prevention
Escaping user input to HTML entities before rendering it prevents cross-site scripting (XSS) attacks. Use this tool to verify escape output before embedding it in code.
Writing HTML Source Code
Convert tag characters (<, >) and quotes to their entity form so they display as text rather than markup in an HTML document.
HTML Email Content Creation
Generate entity-encoded safe HTML strings to ensure special characters display correctly in HTML email clients.
CMS and Blog Post Editing
Encode code snippets to HTML entities for display in WordPress or other CMSs, or decode entity-laden content back to readable text.
HTML Entities FAQ
HTML entities are escape sequences that safely represent characters with special meaning in HTML (e.g. < → &lt;) or characters that are difficult to type directly.
Named entities (&amp;, &copy;) are human-readable. Numeric entities (&#38;, &#169;) use the Unicode code point. Both are interpreted identically by browsers.
Yes. Any Unicode character can be encoded as a numeric entity. However, modern HTML with UTF-8 encoding allows Japanese text to be written directly without entity encoding.
No. All processing runs locally in your browser. Nothing is transmitted externally.
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