Free Online HTML Entity Encoder & Decoder — Convert Special Characters

Overview: Encode & Decode HTML Special Characters & Symbols

Convert special characters to named, decimal, or hex HTML entities and decode entities back to plain text. All computations and data processing are executed 100% locally on your device using client-side WebAssembly, HTML5 Canvas, and modern Web APIs without uploading files to any external server.

Supported Formats

HTML Entity Encoder & Decoder supports the following file formats:

  • .html — client-side processing support.
  • .txt — client-side processing support.

How to Use HTML Entity Encoder & Decoder in Browser

  1. Enter Text: Type or paste your text or HTML snippet.
  2. Select Mode: Choose Encode (Named, Decimal, Hex) or Decode.
  3. Copy Result: Copy the processed output instantly.

Key Features & Privacy Protections

  • 100% Client-Side Privacy: Zero cloud upload. Your documents, photos, and files never leave your local browser sandbox.
  • Zero Installation: Runs instantly in Chrome, Safari, Firefox, Edge, Android, and iOS browsers.
  • Free Forever: No sign-up, no subscriptions, no ads, and no file size limits.

Frequently Asked Questions (FAQ)

Which entity formats can I encode into?

You can choose between Named entities (©, <), Decimal entities (©), or Hexadecimal entities (©).

Can it decode entities back to human-readable text?

Yes, switch to 'Decode to Plain Text' to instantly convert any entity-encoded string back to UTF-8 plain text.

Why should I encode HTML entities?

Encoding prevents XSS (Cross-Site Scripting) vulnerabilities and ensures special symbols (currency, copyright, quotes) render consistently across all web browsers.

Does it include a quick symbol reference?

Yes, click any symbol in the Quick Common HTML Entities Reference table to insert it directly into your workspace.

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HTML Entity Encoder & Decoder

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v1.0.0Free · DOM ParserDeveloper Tools

Free Online HTML Entity Encoder & Decoder — Convert Special Characters

Encode & Decode HTML Special Characters & Symbols. Convert special characters to named, decimal, or hex HTML entities and decode entities back to plain text.

What is HTML Entities and what does it do?

The HTML Entity Encoder & Decoder converts special characters into their corresponding HTML named entities or numeric character references (and vice versa) to prevent XSS vulnerabilities and rendering glitches.

Supporting named entities (&, <, >, "), decimal codes (&), and hexadecimal codes (&), it provides web developers and content creators with an indispensable utility for clean web markup.

  • Encode dangerous characters (<, >, &, ", ', etc.) into safe HTML named, decimal, or hex entities.
  • Decode obfuscated HTML entities and character references back into readable plain text.
  • Options to encode only reserved HTML characters or full ASCII/Unicode symbol sets.
  • Interactive code preview with character count statistics and instant copy-to-clipboard functionality.
  • Zero server latency: all string replacements execute instantaneously on the client side.

How does HTML Entities work?

Encoding matches special characters against standard W3C HTML entity mapping tables or translates Unicode code points into decimal/hex representations.

Decoding utilizes an offscreen DOM element or comprehensive regex replacement dictionary to resolve named entities and numeric references back to standard UTF-8 characters.

100% private: all processing happens locally in your browser using client-side WebAssembly, HTML5 Canvas, and modern Web APIs. Your files are never uploaded to any server.

Who needs HTML Entities?

Web Developers & Programmers

Sanitize user inputs, prepare text for safe embedding in HTML templates, and prevent Cross-Site Scripting (XSS).

Content Writers & Technical Bloggers

Display code snippets, mathematical symbols, and foreign language characters properly in CMS blog posts.

Email Template Designers

Encode special characters in HTML email campaigns to ensure consistent rendering across tricky email clients.

Localization & i18n Specialists

Convert accented and international characters into safe character entities for legacy browser compatibility.

Supported file formats

HTML Entity Encoder & Decoder processes the following file extensions and data formats directly in your browser:

.html.txt

How to use HTML Entities — step by step

  1. 1

    Enter Text

    Type or paste your text or HTML snippet.

  2. 2

    Select Mode

    Choose Encode (Named, Decimal, Hex) or Decode.

  3. 3

    Copy Result

    Copy the processed output instantly.

Frequently asked questions

Which entity formats can I encode into?

You can choose between Named entities (©, <), Decimal entities (©), or Hexadecimal entities (©).

Can it decode entities back to human-readable text?

Yes, switch to 'Decode to Plain Text' to instantly convert any entity-encoded string back to UTF-8 plain text.

Why should I encode HTML entities?

Encoding prevents XSS (Cross-Site Scripting) vulnerabilities and ensures special symbols (currency, copyright, quotes) render consistently across all web browsers.

Does it include a quick symbol reference?

Yes, click any symbol in the Quick Common HTML Entities Reference table to insert it directly into your workspace.

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