HTML5 (Semantic HTML, Forms, Accessibility)
CSS3 (Flexbox, Grid, Animations, Responsive Design)
JavaScript (ES6+) (Async/Await, Promises, DOM Manipulation)
Frontend Frameworks/Libraries:
React.js (Hooks, Context API, Redux)
Vue.js (Vuex, Composition API)
Angular (RxJS, Dependency Injection)
State Management (Redux, Zustand, Context API)
CSS Preprocessors (SASS, LESS)
Build Tools (Webpack, Vite, Parcel)
Static Site Generators (Next.js, Gatsby)
Web Performance Optimization (Lazy Loading, Code Splitting, Caching)
Progressive Web Apps (PWA) (Service Workers, Offline Support)
Web Accessibility (A11y) (ARIA, Screen Readers)
Testing (Jest, Cypress, React Testing Library)
Server-Side Languages:
Node.js (Express, NestJS)
Python (Django, Flask)
PHP (Laravel, Symfony)
Java (Spring Boot)
C# (.NET Core)
Databases:
SQL (PostgreSQL, MySQL)
NoSQL (MongoDB, Firebase)
ORMs (Prisma, Sequelize, Mongoose)
APIs:
RESTful API Design
GraphQL (Apollo, Hasura)
WebSockets (Socket.io)
Authentication & Authorization (JWT, OAuth, Passport.js)
Security Best Practices (CORS, CSRF, SQL Injection, XSS)
Caching (Redis, Memcached)
Microservices & Serverless (Docker, Kubernetes, AWS Lambda)
Deployment & DevOps (CI/CD, GitHub Actions, AWS, Heroku)
MERN/MEAN Stack (MongoDB, Express, React/Angular, Node.js)
Jamstack Architecture (JavaScript, APIs, Markup)
Real-Time Apps (WebSockets, Firebase)
Headless CMS (Strapi, Sanity, Contentful)
Version Control (Git, GitHub/GitLab)
Performance & Scalability (Load Balancing, CDN)
SEO Best Practices (Server-Side Rendering, Meta Tags)
Web3 & Blockchain (Smart Contracts, Ethereum, Solidity)
AI in Web Dev (Chatbots, TensorFlow.js)
WebAssembly (Wasm) (High-Performance Web Apps)
Motion UI & Animations (Framer Motion, GSAP)
Low-Code/No-Code Tools (Bubble, Webflow)
Clean Code Principles
Agile & Scrum Methodologies
Cross-Browser Compatibility
Mobile-First Development
Debugging & DevTools Mastery
MDN Web Docs (Best for fundamentals)
freeCodeCamp (Hands-on projects)
Frontend Masters / Udemy (Advanced courses)
YouTube (Traversy Media, The Net Ninja)