HTML Entity Encoder & Decoder: Escape Special Characters Online

Safely escape characters like ampersands, angle brackets, and quotes into named or numeric HTML entities to prevent XSS vulnerabilities in templates.

HTML Input

Transformed Output

&lt;script&gt;alert(&quot;Hello &amp; welcome to FormatFlow!&quot;);&lt;/script&gt;

How to Use HTML Entity Encoder & Decoder

Paste text containing HTML special characters to escape or unescape entities.
Copy the output with one-click copy buttons.

Practical Examples

Generated Identifier

Standard RFC identifier

Input:

Version 4 UUID

Output:

xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx

Common Mistakes & Troubleshooting

Using non-encoded query parameters: Spaces and special symbols must be percent-encoded in URLs.

Frequently Asked Questions

What is UUID Version 7?

UUID v7 is the new RFC 9562 standard for timestamp-ordered UUIDs. It combines a 48-bit millisecond timestamp with cryptographically random bits, making it optimal for database indexing.