JSO Generator
Create Overlay payload for website security testing
JavaScript Overlay Generator
Basic Mode
Custom HTML Mode
Basic Configuration
Overlay Title
Message Content
Your session has expired. Please login again to continue.
Button Text
Redirect URL
Appearance Options
Background Color
Background Opacity
0.8
Text Color
Button Color
Button Text Color
Advanced Options
Show Close Button
Allow Escape Key to Close
Allow Click Outside to Close
Show Overlay Automatically
Delay Before Showing (milliseconds)
Custom CSS (optional)
Custom HTML
HTML Code
ASCII Conversion
ASCII Output
Convert to ASCII
Convert from ASCII
Copy ASCII
ASCII encoding can help bypass some basic filters. Each character is converted to its ASCII code number.
Background Color (for overlay container)
Background Opacity
0.8
Generate JSO Payload
Generated Payload
This payload is for authorized security testing only. Use responsibly and only on systems you have permission to test.
Copy Code
Test Overlay
Copy as Bookmarklet
Overlay preview will appear here when testing