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Input
HTML or text
Modes
2 explicit
Runtime
Browser

Encode text as HTML character references

Turn literal text characters into named or numeric references without parsing markup.

Local processingNo sign-upNo resource loading

Encode HTML entities

Source stays in this tab. Parser input is capped at 500 KiB; sanitizing uses 256 KiB.

Encoded character references

Every result is inert, copyable source or data, never live DOM.

What this tool does

Explicit-mode, bounded, local parsing

Encoding is a text transform, not a complete contextual escaping strategy. Attribute, URL, CSS, and JavaScript contexts have additional requirements.

Character encoding is context-sensitive

Encoding is a text transform, not a complete contextual escaping strategy. Attribute, URL, CSS, and JavaScript contexts have additional requirements.

The parser runs locally with a 500 KiB input cap, 100,000-node and 100-level tree limits, and a 1 MiB output cap. It never fetches URLs, loads resources, uploads source, or saves a preset.

Explicit document and fragment modes

Document mode applies the HTML document parser and may supply implied html, head, or body structure. Fragment mode parses only a pasted fragment. The selected mode is part of the result and is never inferred from the text.

Primary references

Questions and answers

Related HTML tools

HTML Entity DecoderDecode comprehensive HTML5 character references as plain text while leaving unknown names visible.HTML SanitizerReturn sanitized source text after removing active elements, resource loaders, event handlers, and unsafe URL schemes.HTML FormatterNormalize parser output into readable indented HTML source without executing it.