Webentwicklung
Web Performance: Optimizing Core Web Vitals
Kevin KrögerWebentwicklung
Web Performance is a central topic in modern web development. In a time when users expect top performance and the best user experience, developers must master the right technologies and patterns. This comprehensive guide shows you everything you need to know about web performance – practical, current, and with concrete recommendations.
Overview: Web Performance
Web Performance is a central topic in modern web development. The technology landscape has evolved rapidly in recent years, and choosing the right technologies and patterns is more important than ever.
At AXIS/PORT., we use modern technologies and proven best practices in software development. Our experience shows: The right technical foundation determines a project's success.
In this article you'll learn:
- Key concepts and fundamentals
- Practical application examples
- Best practices and common mistakes
- Tool recommendations and resources
Why This Topic Matters Now
The web development stack has fundamentally changed:
Performance is a ranking factor – Google evaluates Core Web Vitals as a direct ranking factor.
User expectations are rising – Users expect app-like experiences in the browser. Load times over 3 seconds lead to 53% bounce rate.
Developer experience counts – Modern tools like TypeScript, Next.js, and Tailwind CSS speed up development.
Security is mandatory – Secure coding and DevSecOps must be considered from the start.
Practical Implementation
For practical implementation, we recommend:
Step 1: Requirements Analysis
- Technical requirements
- Target audience
- Performance goals
Step 2: Technology Selection
- Choose framework (Next.js, Remix, Nuxt.js)
- Define styling approach (Tailwind CSS, CSS Modules)
- Plan backend architecture
Step 3: Development
- Set up CI/CD pipeline
- Implement testing strategy
- Establish code reviews
Step 4: Deployment and Monitoring
- Choose hosting (Vercel, AWS, own server)
- Set up performance monitoring
- Activate error tracking
At AXIS/PORT., we accompany projects from conception to go-live.
Best Practices and Common Mistakes
From hundreds of projects, we've distilled these best practices:
Do:
- Use TypeScript from the start
- Design mobile-first – over 60% of traffic comes from mobile
- Write automated tests – testing isn't a luxury
- Consider accessibility from the beginning
- Define and maintain a performance budget
Don't:
- Over-engineering: Not every project needs microservices
- Premature optimization: Measure first, then optimize
- Vendor lock-in: Build abstraction layers
- Accessibility as afterthought: Adding it later is more expensive
- Ignore security: A data breach destroys trust permanently
Tools and Resources
Our recommended tools:
Development: VS Code with ESLint, Prettier, TypeScript plugins; Git with conventional commits; Docker for local environments
Testing: Vitest/Jest for unit tests; Playwright/Cypress for E2E; Storybook for components
Deployment: Vercel (ideal for Next.js); GitHub Actions for CI/CD; Sentry for error tracking
Performance: Lighthouse for audits; WebPageTest for detailed analysis; Bundlephobia for bundle size
At AXIS/PORT., we develop performant, modern web applications with the right tools and technologies.
Conclusion
Web Performance requires solid knowledge and the right tool choices. Start with solid foundations, use proven best practices, and optimize continuously. At AXIS/PORT., we develop modern web applications with the latest technologies.
About the Author
Kevin Kröger
Founder & Geschäftsführer
Kevin Kröger is the founder and CEO of AXIS/PORT. He oversees SaaS development, cloud infrastructure, and technical project management.