Cross-Site Scripting (XSS) Input Tester
Test your application inputs against common XSS script injections to identify security vulnerabilities.
Secure Web Inputs Against Script Injections
Cross-Site Scripting (XSS) remains one of the top security vulnerabilities in web applications. It occurs when a site renders unescaped user inputs, allowing attackers to run scripts in other users' browsers. Our XSS payload tester helps you identify these vulnerabilities.
Prevent Script Exploits
Test your forms, comments, and query inputs against common XSS payloads, including script tags, event handlers, and encoded vectors, to ensure your application correctly sanitizes inputs.
Key Benefits & Features
Common XSS Vectors
Test inputs against standard XSS injection payloads.
Sanitization Verification
Checks if your sanitization script blocks tags and event triggers.
Security Reports
Explains why specific payloads are dangerous and how to block them.
How to Use the XSS Payload Tester Step-by-Step
This utility runs entirely inside your browser using client-side JavaScript. We prioritize your security: none of your inputted text is logged or stored.
- 1
Paste or select an XSS injection payload.
- 2
Submit the payload to your input fields.
- 3
Check if script statements run or render as plain text.
- 4
Verify that your code sanitizes inputs correctly.
Practical Examples
<script>alert("XSS")</script>
Frequently Asked Questions (FAQ)
What is the difference between Reflected and Stored XSS?▼
Reflected XSS occurs when a script is echoed in a single response, while Stored XSS occurs when a script is saved to a database and served to multiple users.
How do I protect my website from XSS?▼
Always escape user inputs to HTML entities before rendering them, and implement a strong Content Security Policy (CSP).
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