Encode & Decode Named and Numeric HTML Entities Safely in Your Browser

Q: Which characters must be HTML-encoded to prevent Cross-Site Scripting (XSS) in HTML bodies?

At minimum, &, , ", and ' must be escaped so untrusted strings cannot break out of text nodes or attribute values.

Escape raw HTML snippets, code blocks, and untrusted user strings into safe named (&lt;) or numeric (<) entities—or decode escaped HTML back to readable markup.

✓ Named & Hex Entity Engine Target Keyword: "html entity encoder decoder online" (110,000/mo) Est. Ad RPM: $14 – $22

INPUT SOURCE 66 chars

<script>alert("XSS & Injection Test — Cost: €49 © 2026");</script>

LIVE PROCESSED OUTPUT UTF-8 • CLIENT-SIDE

Processing...

Ready • 100% local execution Server Cost: $0.00 • Latency: <5ms

How to Use the HTML Entity Studio

STEP 01

Paste raw HTML markup or entity-encoded text into the left input editor.
STEP 02

Select Named Encoding, Numeric Hex Encoding, or Entity Decoding from the toolbar.
STEP 03

Copy the escaped output for safe embedding in documentation, emails, or templates.

Frequently Asked Questions (HTML Entity Studio)

Which characters must be HTML-encoded to prevent Cross-Site Scripting (XSS) in HTML bodies?

At minimum, &, <, >, ", and ' must be escaped so untrusted strings cannot break out of text nodes or attribute values.