browserutils

HTML Entity Encoder / Decoder

Encode and decode HTML entities

HTML Entity Encoder / Decoder is a free online tool from BrowserUtils that encode and decode html entities. It runs entirely in your browser — your data never leaves your device. No account required.

Related guides

CheatsheetHTML Entities Cheatsheet — Symbols, Math, Arrows & MoreGlossaryWhat is HTML Entities?GlossaryWhat is URL Encoding?

How to use HTML Entity Encoder / Decoder

  1. 1 Paste or type your input into the editor above.
  2. 2 The tool processes your data instantly — right in your browser, with nothing sent to a server.
  3. 3 Copy the result with one click or continue editing your input.

About HTML Entity Encoder / Decoder

Free online HTML entity encoder and decoder. Convert special characters to HTML entities or decode entities back to text. This tool runs entirely in your browser — your data is never sent to a server. Just paste your input, get instant results, and copy with one click. No sign-up or installation required.

HTML Entity Encoder / Decoder specs

Runtime
100% client-side (browser)
Built on
TextEncoder, TextDecoder, btoa/atob, and encodeURIComponent — all Web Platform APIs
Cost
Free — no account, no rate limits, no usage caps
Browser support
Chrome 90+, Firefox 88+, Safari 14+, Edge 90+
Part of
299 developer tools on BrowserUtils (100% client-side)

Questions

What are HTML entities and why do I need them?
HTML entities are special codes like & and < that represent characters which have reserved meaning in HTML. Encoding prevents browsers from interpreting your text as markup and protects against XSS attacks.
When should I use HTML encoding vs URL encoding?
Use HTML encoding when inserting user-supplied text into an HTML document to prevent broken markup or script injection. Use URL encoding when including special characters in URL parameters or query strings.
Does HTML encoding prevent XSS attacks?
HTML entity encoding is a key defense against cross-site scripting (XSS). It ensures that user input is displayed as text rather than executed as HTML or JavaScript.
What is the difference between named and numeric HTML entities?
Named entities use a mnemonic like & for &. Numeric entities use the Unicode code point like & for the same character. Both produce identical output in browsers.
How do I encode special characters for an HTML email?
Paste the text containing special characters and encode it to HTML entities. The output can be safely embedded in HTML email templates without breaking the markup.
Does the HTML encoder handle emoji and Unicode?
Yes, all characters outside the basic ASCII range can be encoded as numeric HTML entities (e.g., 😀 for a smiley face), ensuring they display correctly in any HTML context.
Embed this tool

Copy this code to embed the tool on your website. Adjust the height to fit your layout.

<iframe src="https://www.browserutils.dev/embed/html-encode-decode" width="100%" height="500" frameborder="0" title="HTML Entity Encoder / Decoder"></iframe>

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