What is HTML entity encoding?

HTML entity encoding converts special characters that have meaning in HTML ( , &, ", ') into safe entity equivalents like <, >, &. This prevents the browser from interpreting them as markup, which is essential for displaying code snippets and preventing XSS attacks.

What's the difference between named, decimal, and hex entities?

Named entities use descriptive names like & or <. Decimal numeric entities use & (the decimal code point). Hex numeric entities use & (the hex code point). Named entities are more readable, but numeric entities work for any Unicode character. All are valid in HTML5.

What does Encode all non-ASCII do?

When enabled, all non-ASCII characters (including emojis, Chinese, accented letters, and other Unicode) are converted to numeric entities like é. This is useful for older systems that may not handle UTF-8 correctly, or for ensuring maximum compatibility across different character encodings.

Is my data sent to a server?

No. All processing happens entirely in your browser using JavaScript. Your data never leaves your device, is never transmitted over the network, and is never stored anywhere.

When should I use HTML entity encoding?

Use HTML entity encoding when displaying user-generated content in web pages (XSS prevention), embedding code snippets in blog posts or documentation, or inserting special characters into HTML attributes. Modern frameworks like React auto-escape by default, but manual encoding is needed for raw innerHTML, CMS exports, and email templates.

Tools

|Encode all non-ASCII

Input

1

Output

Result will appear here...

0 chars|Size: 0 B

HTML Entity Encoder / Decoder

HTML entity encoder and decoder. Encode special characters (< > & " ') to HTML entities or decode entities back to readable text. Prevents XSS attacks and broken markup when displaying user-generated content or code snippets. Supports named entities, decimal (&), and hex (&) numeric references. Features include encode-all-non-ASCII option, drag-and-drop file upload, one-click copy, and download results as text files. All processing runs locally in your browser — your data never leaves your device.

Features

✓Encode or decode HTML entities in real time
✓Supports named entities (&), decimal (&), and hex (&) references
✓Encode all non-ASCII option for international content compatibility
✓Instant results as you type, no button to press
✓Drag-and-drop file upload, one-click copy, and download as .txt
✓Works entirely in your browser — no data uploaded

How to Use

1Paste your text into the input area. Toggle between Encode and Decode.
2Enable Encode all non-ASCII to convert non-ASCII chars (é, 中文, 🚀) to numeric entities.
3Results update instantly. Use Copy or Download to save.

Frequently Asked Questions

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