HTML Entity Encoder
Encode and decode HTML entities online. Convert &, <, >, ", and ' into named or numeric HTML entities (&, <, >, ") to prevent XSS vulnerabilities.
What is HTML Entity Encoder?
HTML Entity Encoder converts reserved HTML characters into their corresponding named entity codes (such as `<` to `<` and `&` to `&`) to ensure code snippets display as literal text without being executed by browsers.
How HTML Entity Encoder Works
The tool scans input strings for reserved markup characters and substitutes them with standard W3C HTML named entities or decimal numeric entities.
Key Features
- ✓Bidirectional: Encode raw markup or Decode HTML entities
- ✓Escapes `&`, `<`, `>`, `"`, and `'`
- ✓One-click copy to clipboard
Common Use Cases
- •Sanitizing raw user inputs before rendering them inside HTML templates to prevent Cross-Site Scripting (XSS)
- •Displaying source code snippets inside `<pre><code>` blocks on documentation websites
- •Decoding escaped HTML entity text copied from web pages or CMS databases
Examples & Sample Data
Escaping HTML Tags
<div class="alert">Hello & Welcome!</div><div class="alert">Hello & Welcome!</div>Replaces `<` with `<`, `>` with `>`, `"` with `"`, and `&` with `&`.
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Processing executes entirely in your browser with zero network requests.
How to Use HTML Entity Encoder
- 1
Paste your text or HTML snippet into the editor.
- 2
Click 'Encode HTML' or 'Decode HTML'.
- 3
Copy the converted output.