DevFill Official Icon DevFill
100% Free • Open Source (MIT) • Manifest V3 Offline

Smart Dummy Form Filler for
Web Developers & QA Engineers

Fill entire registration forms, checkouts, and nested web inputs in 1 millisecond. Dispatches native synthetic events with zero network transmission.

Verified Microsoft Edge Extension • Zero Server Requests • No Ads or Paywalls
RegistrationForm.tsx • Alt + Shift + F
● Synthetic Events Dispatched
React / Vue Event Sync

Framework State Synced

Engineered for Developer Speed

Stop typing manual test data. Automate repetitive form submissions with clean heuristic intelligence.

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1-Click Smart Filler

Recognizes email, names, passwords, phone numbers, postal codes, and dropdowns using intelligent heuristic pattern matching.

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Framework Ready

Dispatches native synthetic DOM events compatible with React, Vue.js, Inertia.js, Angular, Blade, and pure HTML forms.

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Context Menu Actions

Right-click any individual input field to insert specific test data like dummy emails, dates, or UUIDs on the fly.

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Multi-Locale Datasets

Supports generating synthetic names and addresses tailored to multiple international locales (English, Spanish, Bengali, etc.).

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Custom Test Passwords

Configure your team's standard test password rule in options so complex authentication validation passes effortlessly.

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100% Offline & Private

Zero external tracking or scripts. All faker engines and datasets run inside your browser's private local extension sandbox.

Global Keyboard Shortcuts

Trigger instant form automation without lifting your fingers from the keyboard.

Alt + Shift + F Fill All Inputs
Alt + Shift + C Clear All Inputs

🛡️ 100% Free & Open Source — No Strings Attached

DevFill contains zero ads, zero telemetry, and zero pro paywalls. Everything is open source under the MIT License and auditable on GitHub.