What Is Web Design Standards and Best Practices 2019 and Why It Matters for Agencies

Web design standards and best practices from 2019 represent a collection of established guidelines for creating websites that perform well across devices, load quickly, and provide good user experiences. These standards emerged from years of testing and real-world data about what makes websites convert visitors and rank in search results. They cover everything from responsive design principles and typography choices to color contrast ratios, page speed optimization, and navigation patterns. While some specific tools and technologies have evolved since 2019, the foundational principles remain remarkably relevant because they're based on how humans actually interact with websites.

For agencies, understanding and implementing these standards directly impacts your ability to deliver results for clients and differentiate yourself in a competitive market. When you build sites that follow established best practices, you're not guessing about what might work—you're building on proven frameworks that reduce development time and revision cycles. Clients see faster page speeds, higher conversion rates, and better search rankings because you're following guidelines developed through collective industry experience. More importantly, standards-based design protects your agency from liability and scope creep. When a client questions why you made a certain decision, you can point to established best practices rather than defending subjective choices. This positions your agency as a professional, evidence-based partner rather than an order-taker.

Practically, this means your design processes should include accessibility checks using WCAG guidelines, responsive testing across common breakpoints, and performance audits that measure Core Web Vitals like loading speed and visual stability. You should establish templates and component libraries that bake these standards in from the start, rather than retrofitting them. For example, rather than debating whether a button should be blue or green, use color contrast checking tools to ensure buttons meet accessibility standards, then let that guide your color choices. When proposing timelines to clients, build in time for standards compliance testing—this prevents rushing through accessibility audits or performance optimization at the end. Document your process and show clients how following these standards reduces their long-term maintenance costs and improves their bottom line metrics.

The practical benefit is that standards-based design creates consistency across your portfolio. When potential clients visit your work, they notice that sites load fast, navigation makes sense, and text is readable. This consistency becomes your brand signal. Additionally, staying current with evolving standards—understanding how 2019 practices have been refined through 2024—keeps your agency competitive. This doesn't mean completely redesigning your approach every year, but rather continuously incorporating new data about what works. Subscribe to resources from W3C and WebAIM, join professional communities focused on web standards, and regularly audit your own client work against current benchmarks. This continuous improvement mindset, grounded in standards rather than trends, is what separates agencies that survive industry shifts from those that get left behind.