HTML Entity Encoder / Decoder

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.

Processed safely on your device

Everything happens in your browser on this device. Your files are never sent to our servers—so you can use it with peace of mind.

How to Use

1

Paste the HTML or text you want to convert into the input area.

2

Click 'Encode to Entities' or 'Decode Entities'.

3

The result appears instantly in the output area.

4

Click 'Copy' to copy the result and paste it into your HTML file or code.

Key Scenarios & 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.

Frequently Asked Questions (FAQ)

HTML entities are escape sequences that safely represent characters with special meaning in HTML (e.g. < → &amp;lt;) or characters that are difficult to type directly.

Named entities (&amp;amp;, &amp;copy;) are human-readable. Numeric entities (&amp;#38;, &amp;#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.