Latest, 17 Oct 2026:13 usersMove the mouse over the chart for any month
Ratings count
monthly, 2 months
Latest, 17 Oct 2026:0 ratingsMove the mouse over the chart for any month
The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.
About Filling Extension
Meet your new favorite development companion! Filling is a lightweight, high-performance browser extension designed to make web form testing fast, painless, and delightful.
Whether you are testing a complex user registration page, a checkout flow, or verifying input validations, this extension saves you from repetitive manual typing.
Key Features
- Dual Testing Profiles: Easily switch between Standard Data (clean, realistic test inputs) and Edge Cases (XSS strings, SQL injections, and stress-test lengths) directly from the popup.
- Lightning-Fast Shortcut: Hit Ctrl + Shift + F (or Command + Shift + F on Mac) anywhere on a webpage to instantly inject standard test data without ever opening the popup.
- 100% Free & Unlimited: No subscriptions, no artificial daily limits, and no accounts required. Use it as much as you need.
- Privacy First: All data is injected locally into your active tab. Your inputs never leave your browser, and no personal data is ever collected or tracked.