How to Build Any Web App Using ChatGPT Codex (in 10 Minutes)

In this video, I explore OpenAI's ChatGPT Codex and build a fully working web app in just 10 minutes using a single prompt — no coding skills needed. I built a thumbnail face swapper app that replaces the face on any YouTube thumbnail with a portrait you upload. I'll walk you through the entire process, from setting up Codex and connecting it to GitHub, to deploying the final app on a live server. What you'll learn: How to setup and use ChatGPT Codex (web version) How to write structured prompts for better outputs How to connect Codex to your GitHub repository How to improve your app UI using a reference image How to iterate and fix issues using follow-up prompts How to deploy your app on a VPS server 🔧 Tools Used: ChatGPT Codex: https://chatgpt.com/codex ⏱️ Timestamps: 0:00 — Codex Intro 0:40 — Setting up Codex and GitHub 1:44 — Writing the prompt & Building app 3:22 — Improving the UI 4:36 — Testing the app 5:24 — Fixing issues with follow-up prompts 6:12 — Final result This is available for free and paid ChatGPT users — no Mac required. If you try building your own app with Codex, let me know in the comments what you made! 📩 For collaborations and partnerships: info@rajeevdaz.com #openaicodex #buildwithai #vibecoding