HTML Entity Encoder / Decoder
Convert text to and from HTML entities, with line breaks preserved.
How to Use the HTML Entity Encoder / Decoder
- Paste Input String: Input plain text with special characters or encoded HTML entities.
- Select Action: Click "Encode" to convert to safe entities or "Decode" to restore plain text.
- Copy Output: Copy your escape-safe code snippet for web applications.
Why Use This Tool
Encoding text to HTML entities online for free helps prevent special characters from breaking a web page's markup or opening an XSS security hole. This tool converts text to and from HTML entities instantly, correctly preserving line breaks in the process. It provides a fast reference check for anyone unsure whether their text needs escaping before it goes live on a page.
How It Works
This HTML escape tool and special character encoder uses the browser's own DOM rendering to safely convert characters like <, >, and & into their entity equivalents, or reverse that process to decode entities back into readable text. It's a free, instant, local alternative to HTMLEntities.net for a quick encode or decode pass.
Key Features
The HTML entity converter works in both directions via a simple tab switch — Encode mode escapes special characters for safe embedding in HTML, while Decode mode reverses already-encoded entities back to plain readable text. As a sanitize-HTML-text tool, it's especially useful when preparing user-submitted text for safe display on a web page. Both directions of conversion update live as you type, so there is no separate button click needed to see the result. A Swap button flips the current output back into the input with the opposite mode selected, a live character and entity count tracks exactly what changed, and you can download the result as a text file or reset the tool in one click.
Common Use Cases
Developers encode user-submitted text before displaying it on a page to prevent HTML injection or XSS vulnerabilities. Content editors decode HTML entities found in a CMS export to get back readable plain text. Technical writers encode angle brackets and ampersands when writing HTML code examples for documentation, and developers debug a display issue caused by unescaped special characters. Technical support staff decode garbled HTML entity codes reported by a customer to understand what text was actually intended.
Tips for Best Results
Always encode any user-generated content before inserting it directly into HTML to prevent cross-site scripting vulnerabilities — this is a fundamental web security practice, not just a formatting nicety. When decoding, double-check the source of the entities to make sure you're not accidentally exposing unsafe content.
A Quick Note
Small security-conscious habits like encoding user-facing text add up to meaningfully safer web applications over time, especially on sites that accept any form of user input.
Privacy & Security
Because ToolNest processes everything entirely within your browser using client-side JavaScript, your files never leave your device. There is no server-side storage, no third-party analytics attached to your data, and no risk of a breach exposing files you processed months ago.
Why should I encode HTML entities to prevent XSS attacks?
Encoding converts characters like < and > into safe entities, preventing malicious script tags from being interpreted as executable HTML.
How to convert special characters like < and > into HTML entities?
Switch to Encode mode, paste your text, and the special characters are automatically converted to their safe entity equivalents.
Does the tool preserve line breaks when encoding or decoding?
Yes, line breaks in your input are preserved correctly through both the encoding and decoding process.
Can this tool decode entities found in a CMS or database export?
Yes, paste the entity-encoded text in Decode mode to convert it back into readable plain text.