Online HTML Entity Encoder & Decoder

Convert text and code into safe HTML entities or unescape encoded entities back to plain text. 100% private in-browser developer utility.

At a glance

HTML Entity Encoder & Decoder is a free browser tool that encodes special characters to HTML entities or decodes entities to plain text in named, decimal, or hex. Output named (<), decimal (<), or hexadecimal (<) entities with a single click. All processing is local: nothing is uploaded, and no account is required.

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100% In-Browser HTML Entity Engine

Code snippets, templates, and payloads are encoded and decoded locally in device memory. Zero strings are transmitted to external servers.

Zero Server Telemetry
Entities Processed 0
Input Characters 0
Output Characters 0
Output Size 0 B

Input Text / Code

0 chars

Encoded HTML Entities

Why Use This HTML Entity Encoder & Decoder?

Multi-Format HTML Entity Encoding: Output named (<), decimal (<), or hexadecimal (<) entities with a single click.
Customizable Character Scopes: Restrict encoding to critical special HTML characters (& < > " '), include non-ASCII characters, or encode all characters.
High-Performance Decoding: Seamlessly unescape named, numeric decimal, and hex entities back to plain readable text.
100% Client-Side Privacy: All string parsing and entity transformations execute locally in browser memory without server logging.

How to Use HTML Entity Encoder & Decoder

1

Select Encode or Decode

Choose whether to escape special characters into entities or unescape entities.

2

Enter Text or Code

Paste your raw string, upload a file, or select a sample preset.

3

Copy or Download

Inspect converted entity count metrics and copy or export the resulting text.

Worked example: Markup to Named Entities

The engine iterates Unicode code points with Array.from and codePointAt, mapping special chars to named, decimal or hex entities entirely in browser memory.

Raw HTML Input Source 
<div class="greeting">Hello & Welcome</div>
Named Entity Output Processed 
&lt;div class=&quot;greeting&quot;&gt;Hello &amp; Welcome&lt;/div&gt;

Technical Specifications & Engine Details

Technical specifications and engine details for HTML Entity Encoder & Decoder
Specification Details
Supported Formats TEXT, HTML → TEXT, HTML
Execution Mode 100% Client-Side In-Browser (client)
Browser Requirements Requires modern web browser with ECMAScript 6+ and standard DOM Web APIs.
Performance Constraints Client browser memory limit (typically 1–2 GB RAM); processing speed depends on local device CPU.
Maintained by Pragyan Pahadi

100% Client-Side Privacy Guarantee

All text encoding and decoding operations run locally in your browser memory. Zero content is transmitted to external servers.

Frequently Asked Questions

Why do I need to encode HTML entities?
Encoding special characters like <, >, and & prevents browser rendering bugs and protects web applications against cross-site scripting (XSS) injection.
What is the difference between named, decimal, and hex entities?
Named entities use readable names like &amp;, while decimal (&#38;) and hex (&#x26;) use numeric Unicode code points.
Does this tool support Unicode emojis and accents?
Yes. The engine uses modern code point iteration to safely handle multi-byte Unicode characters, emojis, and international accents.
Is my text data stored or sent to a server?
No, 100%. All entity transformations run strictly within your local browser JavaScript engine. No content is transmitted over the network.

Methodology

Rankings and recommendations here are never paid for.

Last updated .

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