Artificial intelligence has moved far beyond simple chatbots and basic automation. Today, developers and non-developers alike use AI tools to research information, write content, create presentations, manage projects, and analyse data faster than ever before. The biggest advantage of AI is not that it replaces people. Instead, it helps people spend less time on repetitive […]
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PDF files are one of the most widely used document formats for sharing reports, invoices, contracts, books, research papers, manuals, forms, and business documents. Although viewing a PDF is simple, understanding what’s inside the document is often much more difficult. For example, you may need to know how many pages a PDF contains, whether it’s […]
Add a product to a Shopify store the default way and the whole page reloads. The shopper is looking at your product, they click Add to cart, and the browser throws the page away and rebuilds it. On a slow connection, that’s two or three seconds of blank screen. Sometimes they even land on /cart, […]
In this tutorial, I’ll show you how to build a private local RAG-powered Q&A AI agent for your personal documents using LangChain v1, Ollama, Qwen, and Python. The agent reads your documents and answers questions about them with cited sources, all running on your own machine to preserve privacy. Table of Contents Background What Are […]
AI coding assistants have evolved from simple autocomplete tools into capable development agents that can write code, debug applications, refactor projects, and even execute complex workflows. Among the newest generation of tools, OpenAI’s Codex and Anthropic’s Claude Code have emerged as two of the strongest options for developers. Both platforms promise to improve productivity, reduce […]
Cloudflare Tunnel is a secure tunneling solution that allows developers to expose local applications and private services to the internet without opening inbound ports or changing firewall rules. Instead of accepting direct incoming traffic, Cloudflare Tunnel creates an outbound connection to Cloudflare’s network and routes requests through its global edge infrastructure. This approach improves security […]
Scaling large AI models requires more than just raw computing power. It demands sophisticated techniques to distribute workloads efficiently across hardware. We just posted a new course on the freeCodeCamp.org YouTube channel, where instructor Kian Kyars provides a hands-on guide to mastering Distributed Data Parallelism (DDP). The course shows you how to overcome memory limitations […]
Computers are incredibly fast, but they have a surprising, fundamental flaw when it comes to counting money. In our latest freeCodeCamp.org video, “Why Computers Can’t Count Money,” Ania Kubow dives into the history of a class of software bugs that once challenged major financial institutions, leading to accounts that gained or lost funds due to […]
Building your own AI agent has never been more accessible. We just released a comprehensive new course on the freeCodeCamp.org YouTube channel that guides you through building a powerful, persistent AI agent from scratch, inspired by the popular open-source project OpenClaw. In this project-based course, instructor Shawn Esquivel takes you through the entire development lifecycle, […]
When you build a feature that streams data, like an AI chat response or a live notification feed, the network is rarely as cooperative as fetch makes it look. Connections drop, proxies buffer responses, and mobile networks switch from WiFi to cellular mid-stream. If your streaming code doesn’t plan for this, the user sees a […]