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How I Built a Production-Ready Utility Web App Using GitHub Copilot CLI

GitHub Copilot CLI Challenge Submission

This is a submission for the GitHub Copilot CLI Challenge

What I Built

I built Quick-Tools β€” a full suite of practical utility tools in a modern Next.js + TypeScript web app.

Quick-Tools gives developers and productivity-focused users a set of essential helpers like:

  • UUID generator
  • Password & Hash generator
  • JSON formatter
  • Regex tester
  • Bill Splitter & Tip Calculator
  • EMI Calculator
  • And more…

πŸ“¦ All tools are modular, responsive, and built with reusable components.

🎯 This project showcases clean architecture, strong typing, automated testing, PWA support, analytics integration, and a polished UI.

πŸ‘‰ Source code: https://github.com/DevCodeHub99/quick-tools


Demo

🌐 Live Product Demo

πŸ‘‰ https://quick-tools99.vercel.app/

Quick-Tools is fully responsive and optimized for desktop and mobile devices.

πŸ–₯️ Dashboard Overview

Quick Tools Dashboard


πŸ” Password Generator

Password Generator


🧾 JSON Formatter

JSON Formatter


πŸ’° Calculator Tools (Bill Splitter / EMI)

Calculator Tools


Here’s a walkthrough of my development flow using GitHub Copilot CLI:

πŸš€ Starting the Copilot CLI Session

Copilot CLI Trust Prompt
I initialized the Copilot CLI and trusted my project directory so Copilot could read and assist.


🧠 Planning & Task Breakdown

Copilot CLI Planning

Copilot CLI helped plan every stage β€” component creation, responsive design improvements, tests, analytics, PWA, and deployment.


πŸ’» Iterative Development

Component & Plan View

Copilot CLI broke down tasks into incremental changes and guided me through edits like:

  • Optimizing UI components for mobile responsiveness
  • Adding input validation
  • Updating global styles

πŸ§ͺ Testing Integration

Test Implementation

With Copilot CLI, I scaffolded tests, ran them with Vitest, and confirmed test status β€” providing confidence in every commit.


πŸ“¦ Deployment Plan

Deployment Confirmation

Copilot CLI generated a deployment summary and CI checklist β€” ready for Vercel auto-deploy.


My Experience with GitHub Copilot CLI

Using GitHub Copilot CLI transformed my typical development workflow into a guided, context-aware build process:

πŸ“‹ Contextual Planning

Instead of guessing my next steps, Copilot CLI interpreted my goals and produced a phase-by-phase plan showing:

  • UI refactors
  • Feature additions
  • Test strategy
  • PWA and analytics integration
  • Deployment strategy

This made the project more organized and predictable.

✨ Better Quality Code

Copilot CLI guided edits with tight context awareness of:

  • File structure
  • TypeScript types
  • Tailwind classes
  • Reusable components

This saved time and reduced debugging cycles.

πŸ“ˆ Enhanced Productivity

With Copilot CLI, I felt like I had a second pair of eyes during development β€” always suggesting the why as well as the how.


What’s Next?

I’d love to:
βœ” Add live API tools

βœ” Publish a hosted demo publicly

βœ” Expand tool modules based on user feedback


Thanks for reviewing my submission! πŸš€

Feel free to check out the repo and live hosted demo URL. let me know if you want to add somthing else. I'am here to help you!

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