freeCodeCamp

How to Build a Complete Flutter CI/CD Pipeline with Codemagic: From PR Quality Gates to Automated Store Releases

Oluwaseyi Fatunmole |
If you've spent any time shipping Flutter apps manually, you already know the drill. Someone on the team finishes a feature, builds the APK locally, signs it (hopefully with the right keystore), uploa... read more

How to Stop Letting AI Agents Guess Your Requirements

Daniel Nwaneri |
I spent 64% of my weekly Claude budget before Wednesday building a tool designed to reduce Claude usage. That's the kind of irony that deserves its own specification. The tool is spec-writer: a Claude... read more

How to Use the Command Pattern in Python

Bala Priya C |
Have you ever used an undo button in an app or scheduled tasks to run later? Both of these rely on the same idea: turning actions into objects. That's the command pattern. Instead of calling a method... read more

How to Use MLflow to Manage Your Machine Learning Lifecycle

Temitope Oyedele |
Training machine learning models usually starts out being organized and ends up in absolute chaos. We’ve all been there: dozens of experiments scattered across random notebooks, and model files saved... read more

Claude Code Essentials

Beau Carnes |
We just published a massive new course on the freeCodeCamp.org YouTube channel that will change the way you think about programming. Instead of just chatting with an AI, you can now learn how to use C... read more

Infrastructure as Code with APIs: How to Automate Cloud Resources the Developer Way

Manish Shivanandhan |
Modern software development moves fast. Teams deploy code many times a day. New environments appear and disappear constantly. In this world, manual infrastructure setup simply doesn't scale. For years... read more

Docker Container Doctor: How I Built an AI Agent That Monitors and Fixes My Containers

Balajee Asish Brahmandam |
Maybe this sounds familiar: your production container crashes at 3 AM. By the time you wake up, it's been throwing the same error for 2 hours. You SSH in, pull logs, decode the cryptic stack trace, Go... read more

How to Build a Browser-Based Image Converter with JavaScript

Bhavin Sheth |
Image conversion is one of those small tasks developers run into occasionally. You might need to convert a PNG to JPEG to reduce size, or export an image to WebP for better performance. Most developer... read more

The world still needs people who care - CodePen founder Chris Coyier interview [Podcast #212]

Beau Carnes |
Today Quincy Larson interviews Chris Coyier. He's a front-end developer and co-founder of CodePen and the CSS Tricks blog. He has also recorded more than 700 podcasts about software engineering. We ta... read more

How to Set Up WebAuthn in Node.js for Passwordless Biometric Login

Sumit Saha |
JWT auth feels clean until a stolen token still looks valid to your server. That's the real problem: a bearer token proves possession of a token, but it doesn't prove possession of a trusted device. I... read more