Hi everyone! 👋 I built FormFill Ninja after experiencing a frustrating problem while applying to jobs earlier this year. When you're applying to many roles under time pressure, most of the effort goes into repeating the same information again and again — name, education, projects, skills, cover letters, etc. Filling 20+ fields per application repeatedly felt slow and sometimes even led to small mistakes. So I decided to build a tool that could automate most of this process. FormFill Ninja is a Chrome extension that detects form fields and fills them automatically using a mix of structured data, rule-based extraction, and AI-generated responses. A few interesting engineering decisions while building it: • Backend APIs running on Cloudflare Workers • Hybrid system (regex + structured data + LLM generation) • Reduced token usage from ~4k tokens → ~1–1.1k tokens per form by partitioning resume context • LLM used mainly for complex fields like cover letters and motivation questions The goal was to make the tool fast, lightweight, and cost-efficient. I’d love to hear your feedback, especially from developers and people currently applying for jobs. Thanks for checking it out! 🚀

FormFill Ninja

AI Chrome extension agent that automate job application

AI Chrome extension agent that automate job application