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HTML Escape/Unescape

HTML Escape/Unescape supports escaping and unescaping HTML entities for special characters and tag display, making it useful for user input, code examples, and safer content handling.

Input Text

Character

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HTML Escape/Unescape

Quick Start

1
Enter content (HTML or already‑escaped text) in the textbox
2
Choose Encode or Decode
3
Click the button to convert; the result appears in the same textarea
4
Click Copy to reuse the result

Common Scenarios

User Comments

Escape user-submitted comments to prevent XSS attacks

Blog Posts

Display HTML code examples in articles

Forum Posts

Safely display user-generated content

Chat Messages

Prevent malicious code spread through chat features

Form Data

Process and display form submission data

Code Display

Show HTML/JavaScript code snippets on web pages

Escaping Rules & Entities

Common characters: < > & " ' (slash / is generally not required; context‑dependent)
Entity Format: Special characters are converted to &entity; or &#code; format, e.g., < becomes < or <
Attribute Escaping: Quotes convert to ", protecting HTML attribute values
Script Protection: <script> tags automatically escaped to prevent JavaScript injection
Write <div> as &lt;div&gt; to avoid being parsed by the browser

Usage Advice

Context-aware Escaping: Choose appropriate escaping strategy based on output location
Server-side Processing: Critical security escaping should be done server-side
Double Check: Verify output after escaping to ensure nothing is missed
Use Libraries: Production environments should use mature escaping libraries instead of manual processing
Preview Check: Preview actual display in browser console after escaping

Limitations & Compatibility

Not a sanitizer: does not remove scripts/events/unsafe protocols; use with content sanitization
Incomplete Protection: Escaping alone cannot prevent all XSS, combine with other security measures
Context Dependent: Different locations require different escaping strategies (HTML content, attributes, JavaScript, CSS)
To keep the page responsive, very large text may be processed more simply. Consider splitting

Privacy & Security

All processing happens locally in your browser. You can replace, clear, and re-run the current content at any time.

FAQ

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