Web Security Payload Lab
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⚡ Security Payload Lab

Client-side security testing toolkit

v1.0
Generate Payloads

Sanitizer Test Sandbox

Paste output here to test how a sanitizer handles it. Content is isolated — no scripts execute.

Analyze CSP

Current Page Cookies


Decode JWT Token

Decode JWT

Local Storage

Session Storage

Send Request
⇅ Swap
Process