SupaFill
Fill everything in a snap.
A browser extension that fills forms with realistic fake data. Smart detection, consistent personas, 10 locales. One click.
Features
Smart Form Detection
Automatically detects input types: names, emails, phones, addresses, and more.
Consistent Personas
Every form fill uses a coherent identity: matching name, email, and username.
Multi-Locale Support
10 locales including English, German, French, Spanish, Japanese, Korean, and more.
Flexible Filling
Fill entire forms, single fields, or specific sections via right-click menu.
Keyboard Shortcuts
Ctrl+Shift+E to fill, Ctrl+Shift+L to clear. Customizable in settings.
Customization
Add custom field rules, ignore specific fields, set fixed values.
Privacy First
100% local processing. No tracking, no analytics, no account required.
Lightweight
~100KB total. No runtime dependencies. No external API calls.
How It Works
Install
Add SupaFill from your browser's extension store. No sign-up needed.
Open Any Form
Navigate to any website with a form you need to fill.
Fill in One Click
Click the extension icon or press Ctrl+Shift+E. Done.
Privacy First
100% Local
All data generation happens in your browser. Nothing leaves your machine.
No Tracking
Zero telemetry, zero data collection. Your browsing stays private.
No Analytics
No usage metrics, no behavior tracking. We don't watch what you do.
No Ads
No advertisements, no sponsored content. Ever.
No Account
No sign-up, no login, no email required. Install and go.
Lightweight
~100KB total. No runtime dependencies. No external API calls.
Read our full Privacy Policy