Is this safe for huge inputs?

Very large pastes may slow the tab; prefer chunks for megabyte-scale data.

HTML Entity Encoder / Decoder

Encode or decode HTML entities in the browser.

What this tool does

Toggle encode or decode and transform text using the DOM—handles named entities like & and common special characters. Useful for escaping snippets and templates.

Direction

Plain text

Result

Encode uses the browser DOM (text → innerHTML). Decode sets innerHTML then reads textContent—do not paste untrusted HTML if you run scripts in other contexts.

Example input/output

Illustrative sample — your real inputs may look different.

Example input

<a href="#">Tom & Jerry</a>

Example output

Encode → &lt;a href=&quot;#&quot;&gt;Tom &amp; Jerry&lt;/a&gt;

Frequently asked questions

URL Encoder / Decoder
Encode or decode URL components and full URIs.
Markdown to HTML
Turn Markdown into HTML with a live preview.
JSON Formatter
Format, minify, and validate JSON in the browser.