HTML Decoder

What Is HTML Decoder?

An HTML Decoder converts HTML entities and character references back into the characters they represent. HTML encoding is commonly used when special characters need to be represented safely in HTML source, so decoding is the process of turning those references back into their original readable form.

For example, the encoded text <p>Hello</p> can be decoded to <p>Hello</p>. This is useful when working with copied HTML, source code, documentation, database content, CMS output, debugging data and text that contains encoded markup.

Why Use HTML Decoder?

Decoding HTML entities manually can be tedious, particularly when text contains many character references. This tool converts supported entities automatically and provides a clean result that can be copied and reused.

How to Use HTML Decoder

Decoding HTML entities takes only a few steps. The entire process happens in your browser.

1. Enter encoded text — Paste HTML entities, character references or encoded HTML into the input field.
2. Decode the text — Click Decode HTML to convert the supported entities back into their characters.
3. Review the result — Check the decoded output and compare the input and output character counts.
4. Copy or reuse the result — Click Copy Result or use Use Result as Input if you need to perform another decoding pass.

Decode HTML Entities Online

HTML entities, also known as character references, provide a way to represent characters in HTML using named references or numeric values. Common examples include & for an ampersand, < for a less-than sign, > for a greater-than sign and " for a quotation mark. An HTML Decoder reverses this representation and returns the characters represented by those references.

This can be particularly useful when text has been copied from a database, API response, CMS, webpage source, XML-related workflow or documentation system where HTML characters have previously been escaped. Instead of replacing each entity manually, you can paste the complete string into the decoder and process it in one operation.

HTML Decoding Examples

A simple encoded heading such as <h1>Hello</h1> is decoded to <h1>Hello</h1>. The entity & becomes &, while " becomes ".

Numeric character references can also represent characters. For example, A represents the letter A, while hexadecimal references such as A also represent A. This makes numeric decoding useful when text contains character references rather than named entities.

HTML Encoding vs HTML Decoding

HTML encoding and decoding perform opposite transformations. Encoding converts special characters into HTML-safe character references, while decoding converts those references back into their represented characters. For example, encoding < produces <, while decoding < produces <.

Decoding does not validate an HTML document and does not determine whether the resulting content is safe to insert into a particular HTML, JavaScript, CSS or URL context. It simply converts recognised character references into characters.

HTML Decoding and Character References

The HTML Decoder uses the browser's built-in HTML parsing behaviour to interpret character references, including named entities and numeric character references. The decoded result is placed into a text field, meaning the tool does not execute the decoded content as webpage markup.

Decoding is not encryption and does not provide or remove security protection by itself. If decoded content originates from an untrusted source, treat it as untrusted data. In particular, do not assume that decoding alone makes content safe to insert into an HTML document or another executable context.

If input has been encoded multiple times, it may require multiple decoding passes. For example, content that has had its ampersands encoded more than once can contain nested entity representations. The Use Result as Input button allows you to process the result again when that is appropriate.

The tool works entirely in the browser and does not require an upload or server-side processing service. This also makes it suitable for decoding snippets that you would prefer to keep within your current browser session.

Frequently Asked Questions