About FillKit
The FillKit SDK is open source — the browser extensions are free, and cloud features are provided by ClavisCore LLC.
Why FillKit?
We've all wasted hours typing fake data into forms — "John Doe", "test@test.com", "123 Main St" — over and over again. Other tools generate random values, but they don't understand what a form field actually needs. FillKit does. It looks at each field, figures out what kind of data belongs there, and fills it with something that looks real — the right format, the right length, the right language.
How It Works
Install the browser extension and a floating widget appears on every page with forms. It gives you one-click actions to fill or clear all detected fields — drag it anywhere, switch between valid and invalid data, change locale, or use keyboard shortcuts. No code changes to your app required. Developers can also use the SDK programmatically for automated testing.
Core Principles
One Click, Every Field
FillKit automatically knows what each field expects and fills it with the right kind of data — no setup, no mapping, no config files.
Realistic, Not Random
Names look like names, emails look like emails, and phone numbers are properly formatted. Your forms get data that looks like it came from a real user.
Works in Any Language
Generate data in 50+ locales with locale-appropriate names, addresses, and formats. Test international forms without guessing at foreign data.
Works with Any Framework
FillKit works with React, Vue, Angular, plain HTML, and everything in between. If it has a form, FillKit can fill it.
Add to Chrome — Free
Add to Firefox — Free