Context-aware form autofill with realistic data

FillKit reads page structure, labels, and surrounding context to detect what each field expects — then fills it with realistic, coherent data. A checkout form gets a valid card number, matching expiry, and billing address in the same city. A signup form gets a real-looking name, email, and strong password. It recognizes 100+ field types across 50+ languages and generates both valid and intentionally invalid values for edge-case testing.

Use it as a browser extension for instant one-click filling, or embed the SDK into your app for programmatic control in tests, demos, and development workflows.

  Chrome Extension      Firefox Add-on

Install the SDK

npm install @fillkit/core

Quick Start

import { FillKit } from '@fillkit/core';

const fk = await FillKit.init({ mode: 'valid', ui: { enabled: true } });
await fk.autofillAll();

Docs

Full API reference, configuration options, and framework guides at fillkit.dev/docs.

Intended Use

FillKit is designed exclusively for development, QA testing, and demo environments. All generated data is synthetic — realistic but entirely fake. FillKit is not intended for filling real forms with real personal information.

Privacy & Terms

FillKit SDK operates entirely on your device by default. No form data is collected or transmitted. See our Privacy Policy and Terms of Service for full details.

License

MIT