According to AlphaMoat, as of 2026-09, the Chrome extension Autofill AI Ninja has 32 users (+146.2% MoM), rated 5 (10 reviews) — ranked #6,360 of 9,324 AI browser extensions, and #405 of 601 in Programming.
What is Autofill AI Ninja
AI form filler for developers and QA. Fill React, Vue, Angular and multi-step forms with realistic test data. Autofill AI Ninja is an AI-powered form filler that actually understands your form — not just field types, but labels, placeholders, and surrounding context — so it fills React, Vue, Angular, Svelte and multi-step forms with test data that makes sense, stays consistent across steps, and can match a specific locale on request (Japanese names, Tokyo addresses, JP phone formats, and more).
No subscription, ever. Works right away with smart built-in defaults — no account, no setup. Want even more realistic, context-matched data? Connect a free Google Gemini or Groq account and let AI generate it instead.
WHY AUTOFILL AI NINJA?
Testing forms gets repetitive fast — registration flows, checkout, onboarding, profile forms, multi-step applications. Same fields, same manual re-entry, every test cycle. Autofill AI Ninja fills them in seconds, with data you don't have to double-check or explain away in a bug report.
CONTEXT-AWARE, NOT RANDOM
- Reads field labels, placeholders, and surrounding page context — not just input type
- Keeps values consistent across multi-step forms (the name entered on step 1 shows up correctly on step 3's review screen)
- Write any custom instructions according to your scenario — "use Japanese names and Tokyo addresses," "French names and Paris addresses," "Korean phone formats" and get your desired results.
- Fully safe handling your API KEYS with proper encryptio.
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BUILT FOR MODERN WEB FORMS
Works with React, Vue, Angular, Svelte, and standard HTML — using native setters and real events, so the framework registers the value instead of resetting it.
USE AI WITHOUT ANOTHER SUBSCRIPTION
Connect your own AI provider — Google Gemini or Groq — both offer a generous amount of free tier tokens for usage, no credit card required.
Your key is stored locally on your device (optionally encrypted with a passphrase); it's never sent to us and never leaves the extension. Provider limits and pricing are set by Google/Groq, not us.
Prefer not to deal with any of that? Heuristics-only mode fills forms immediately using smart built-in defaults — no API key, no account, no setup, and no form content is ever sent anywhere.
Tutorial: https://nobijoy.github.io/ai-form-filler/tutorial.html Documentation: https://nobijoy.github.io/ai-form-filler/ GitHub: https://github.com/nobijoy/ai-form-filler Privacy policy: https://nobijoy.github.io/ai-form-filler/privacy.html
Extension profile
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Data month: 2026-09 · User counts and ratings come from public Chrome Web Store data, aggregated monthly. See methodology.