Master Modern AI Engineering with Production Code

AG-UI: How the Agent-User Interaction Protocol Works

AI Agents & Automation

AG-UI (Agent-User Interaction Protocol) is an open, lightweight protocol that standardizes the way AI agents interact with frontend apps. Consider it a common language that eliminates the need for custom integration code...

Accessibility on the Platform

Web development

Codecademy is committed to providing a high-quality learning experience for all learners. That includes accommodating different usage forms such as auditory, motor, or visual restrictions, limited hardware, or other acce...

Building Websites with Wix

Developer tools

Creating a website has never been easier. Previously, making a presentable website meant learning HTML, CSS, andJavaScript. The whole process could take weeks, months, or even years before creating a website that you’re...

CSS Glossary

Web design

Comments in CSS are signified by a forward-slash and asterisk.

CSS Visual Rules in Chrome Inspector

Developer tools

Browser developer tools allow web developers to quickly collect important information on most websites. These tools are available within most major web browsers, like Chrome, Safari, and Firefox, to name a few. Because G...

Create Stunning Tailwind CSS Forms: A Step-by-Step Guide

Web development

Have you ever wondered how websites make their forms look cool and easy to use?

Create Your First Local HTML/CSS Project

Web development

In this article, we’ll cover how to take the CSS skills you’ve learned on Codecademy and use them to create a basic web page built entirely from the tools you have on your computer. Before you proceed, you should already...

Create and View a Web Page on Your Computer

Web development

When you navigate to a web page on the Internet, the browser is doing a lot of work. The browser reads all the necessary files (HTML, CSS, andJavaScript) and interprets those raw resources to paint the complex page you s...

Design Mobile App UI with Google Stitch (Step-by-Step Guide)

LLM Workflows

Stitch by Google is an AI-powered UI design tool introduced at Google I/O 2025 and now available through Google Labs. With Google Stitch AI, users can turn text prompts or image inputs into responsive user interfaces and...

Docling AI: A Complete Guide to Parsing

LLM Workflows

Docling is an open-source framework created by IBM to convert unstructured documents into structured machine-readable formats. Instead of giving a raw text dump like most PDF tools, Docling analyzes the layout and turns ...

Figma Make Tutorial: Build Interactive Apps with AI

Developer Tools

Ever designed a great UI and thought, "I wish I could just make this work without jumping through extra tools or workflows"? What if you could bring your designs to life by describing what you want, no handoff, plugins, ...

Grids in SwiftUI

Mobile development

The grid layout has become a familiar paradigm for mobile user experiences. The canonical example of grid layout is in the built-in camera roll app for iOS. It can also be found on an extremely popular social photo-shari...

HTTP Requests

Web development

This page is generated by a web of HTML, CSS, andJavascript, sent to you by Codecademy via the internet. The internet is made up of a bunch of resources hosted on different servers. The term “resource” corresponds to any...

How Users Scan: Learning from Eye Tracking Research

Web development

You designed a beautiful web page. The color schemes and typography are perfect, the assets are beautiful, and the call-to-actions are intuitively positioned. Given all these things, you can count on users to interact wi...

How to Use Figma Sites to Build Website

Developer Tools

Figma Sites is a website builder that lets you create and publish websites directly from your Figma designs without coding. Now in open beta for all paid users, this integrated tool eliminates the need for exports or ext...

Inline Styles in HTML

Web design

Usually, CSS is written in a separate CSS file (with file extension.css) or in a<style>tag inside of the<head>tag, but there is a third place which is also valid. The third place you can write CSS is inside of an HTML ta...

Managing Assets and Icons

Web design

In this article, you will learn how to manage icons and assets using web-based tools.

Running JavaScript in the Browser Console

Web development

Along with HTML and CSS,JavaScript(JS) makes up one of the core languages inweb development. JS code is normally added using the HTML<script>element for executing in web browsers, but most modern browsers also provide a...

Seaborn Color Palettes: Complete Guide to Data Visualization Colors

Web design

Seaborn color palettesare predefined sets of colors that enhance your Python data visualizations by providing consistent, accessible, and visually appealing color schemes. These palettes help distinguish categories, emph...

Test-Driven Development

Web development

Web developers have different workflows for creating and maintaining projects. For example, when implementing responsive design, some developers will program “mobile-first” by starting with the mobile view and scaling up...

Typography Design

Web development

Typography is the art of arranging text on a page to make it legible and appealing. Decisions about the arrangement of text are just as vital to site design as color, layout, and image selection. Text has the power to gr...

Users Don’t Read Web Pages

Web development

You designed a beautiful web page. The color schemes and typography are perfect, the assets are beautiful, and the call-to-actions are intuitively positioned. Given all these things, you can count on users to interact wi...

Web UI Conventions

Web development

Websites and the ways that people expect to use them have evolved together over the years. Features or layouts that were difficult to use were discarded, and features that worked well became more and more common, further...

What is CSS-in-JS

Web development

This article will explore CSS-in-JS as a concept and evaluate the pros and cons of using CSS-in-JS. This article will not prescribe any specific library or syntax for using CSS-in-JS, as examples of both will be provided...

What is Digital Accessibility?

Web development

Accessibility refers to designing devices, products, and environments such that individuals with disabilities or sensory impairments can successfully use the device or product.

What is Streamlit? A Complete Guide for Building Data Apps

Cloud & Full-Stack AI

Have you ever considered writing a few lines of Python and instantly turning them into a live, interactive web app? No JavaScript, no CSS, and no complicated front-end frameworks, just Python.

What is Wireframing in Mobile App Development?

Mobile development

A mobile appwireframeis a collection of sketches and notes that represent what a mobile app might look like on a device. It shows the layout of elements such as navigation bars, buttons, and content blocks—essentially se...

Wireframe to Wire-fame

Web development

In this project, you will fire upAndroid Studio, create a brand new project, and design the layout needed to make Unquote a reality. You will use Android Studio and the Layout Editor to create a layout that will serve as...

Creating User Personas

Web design

User Personas are a written way of approximating your understanding of your diverse users and their goals and motivations for using your product. User personas allow you to summarize what you know about your current user...

Data Privacy, Ethics, and the Social Impact of Computing Systems

Web design

Think of a set of dominos carefully and elaborately set up in space. All it takes is a single push, intentional or accidental, for a rapid and massive chain reaction to take place. Once the first domino falls, we don’t h...

How to Conduct Card Sorting

Web design

A good information architecture is crucial for a product. You want to easily find what you’re looking for and understand how to get there, right? Imagine you’re on a website shopping for a new toaster. There’s a home app...

Interpreting Website Analytics

Web design

Understanding how to interpret basic website analytics will help you understand who your users are and what parts of your website are succeeding or failing.

Introduction to User Centered Design

Web design

What does it mean for design to be user-centered?

SWOT Analysis

Web design

User-Centered Design must be done with a knowledge of the business objectives of the product. The goal is not just to understand the users, but to use your knowledge of the users to guide the creation of a product that w...

Understanding User Research

Web design

User research is ideally conducted by teams of people, with input from multiple departments (ie. product design, customer service, engineering), as well as experts in conducting both qualitative and quantitative research...

What is UI/UX Design?

Web design

While “design” is often equated with graphic design or visual design,designis a vast discipline with many subdisciplines – everything from industrial design to service design falls under the umbrella of design. Merriam-W...

What is a User Story?

Web design

User stories are a way of concisely defining the common interactions and needs that your users will have with your product. User stories are helpful for many reasons, from making sure that your design process is centered...

Wireframing The Unquote Game

Web design

Along this Android and Java journey, you will build a game. Each project will bring you one step closer to completing a working trivia game we’re calling,Unquote.