If your website takes too long to load, there's a good chance people will abandon it. So to help you make it snappier, Alex wrote this guide. He discusses various techniques like optimizing code & images and managing plugins & scripts to help you remove those extra bits and

For today's coding challenge, you'll get an array of values. You'll need to remove all occurrences of the most frequently occurring value and return the resulting array. Check it out on the freeCodeCamp mobile app.

I can personally vouch for a dozen of these - from the genius silverware storage, to the perfect leggings with 70+ reviews, to the hands-down best pillows on earth.

Learning DevOps can be challenging, and it's difficult to know where to start. Sometimes, some hands-on experience does just the trick. Here, @nitheeshp shows you how to build a GitOps pipeline for a production grade app. https://t.co/U7NuDv5zdF

Chemistry connects biology, medicine, and many more disciplines. It's about reasoning, and how to break down complex systems. In this Chemistry course, Chad McAllister teaches you everything from the periodic table to thermodynamics. https://t.co/5S14d6iXPS

Godot is a lightweight, powerful game engine that's easy for beginners to learn. And it's open source, too. In this course by @luiscanary (taught in Spanish), you'll learn to to implement lighting, animations, physics, & more. https://t.co/Z8ceYMsD5k

Cybercriminals love the holidays almost as much as you do! Protect your accounts with multifactor authentication. A little extra security now means more peace of mind while you shop, wrap, and celebrate. Read our Safe Shopping guide and share these tips with your loved ones!

Making games is one of the best ways to learn programming. It pushes you learn new tech and interesting solve problems. Here, Erik Yuzwa teaches you how to use C and Raylib to build a match-3 game with graphics, music, and points. https://t.co/P1qX3DffPs

Tell your friends: you can now start learning Spanish with freeCodeCamp's new A1 Professional Spanish Curriculum! It covers key building blocks of the Spanish language, and has warm up exercises, review pages, and quizzes to help you practice. You'll learn proper pronunciation,

All right my ambitious friends: if you're doing some year-end skill building this weekend, here are my 5 recommendations. 💪😎💻 1. freeCodeCamp just launched our new Python certification curriculum. You can learn Python by building projects right in your browser. You'll learn a

For today's coding challenge, you'll get an array of integers and a target number. You'll need to find all pairs of elements whose values add up to that target number and return the sum of their indices. Whew! See if you can solve it on the freeCodeCamp mobile app.

If you want to learn game development fundamentals, here's a fun course for you. You'll build your own 2D pixel art tower defense game using the popular Unity game dev framework. Along the way, you'll set up 2D tilemap levels, animate pixel-art characters, build towers, and

JavaScript is one of the most popular languages for web development. And if you want to solidify and level up your JS skills, this course is for you. In it, Steven teaches you all about Object Oriented Programming, prototypal inheritance, ES6 classes, Node.js, and async

As a full-stack developer, you're responsible for coding both the front and back ends of a website. And in this handbook, @prankurpandeyy explains what's involved in full stack development. You'll learn about popular tools and languages, DevOps practices, how to approach the

LLMs are powerful tools that can help you with many tasks. But they're reactive, and they wait for your input before doing anything. Here, Balajee goes over how to use LLM agents, which have memory and autonomy, to take your use of AI to the next level. https://t.co/Dgi7gunbyP

The open source community offers devs many opportunities to collaborate, learn, & grow. Contributing to OSS helps you develop skills, get key experience when job hunting, and so on. If you want to dive in, this course will teach you how to get involved. https://t.co/oVxDLFKrNe

Now you can learn Spanish on freeCodeCamp. We just launched our FREE Spanish curriculum. You'll learn: 🔡 Pronunciation ⚽️ Nouns 🤝 Greetings and introductions 🧮 Counting and numbers More than 200 steps are live now. The rest of CEFR level A1 go live in 2026. ¡Aprendamos!

For today's coding challenge, you'll create a checkerboard (a matrix) filled with Xs and Os. Check it out on the freeCodeCamp mobile app.

If you have an app, you'll want to track its performance, how users interact with it, what errors occur, etc. This involves setting up a monitoring system - which is what @TanGuangzh54866 helps you do in this handbook. You'll focus on the data collection & reporting stage of

You might think graphs are just something you learned about in math class - but they're everywhere. Think Google Maps, friend connections on social media, visualizing Git branches, etc. In this guide, @b_eautifulchaos explains how we use graphs in real-world systems, different

Supabase is a popular Backend-as-a-Service tool that you can use to build powerful, scalable apps. And in this course, you'll learn how to use it by building a React.js sales dashboard. Your app will have authentication, real-time data operations, secure user management, and

Many devs love Go for its simplicity - and a lot of this comes from its small core group of data structures. There are three main ones you'll need to know: arrays, slices, and maps. In this tutorial, Gabor explains how each one works in depth with Go code examples.