What Is Website Design Tips 2021 and Why It Matters for Agencies

Website Design Tips 2021 refers to the evolving best practices and design standards that emerged during that year, driven by changes in user behavior, search engine algorithms, and technology. While we're now several years past 2021, understanding what shifted that year remains relevant because many of those trends became permanent fixtures in how Google and users evaluate websites. The core focus centered on three areas: Core Web Vitals (Google's technical performance metrics), mobile-first experiences, and conversion-focused design. These weren't just aesthetic preferences—they directly influenced search rankings and user engagement metrics. For agencies, this represented a turning point where design decisions could no longer be separated from technical SEO and performance optimization.

For agencies specifically, understanding 2021's design evolution matters because it fundamentally changed how you should approach client projects and position your services. During that period, Google officially announced that Core Web Vitals (Largest Contentful Paint, First Input Delay, and Cumulative Layout Shift) would become ranking factors. This meant that a beautifully designed website could tank in search results if it loaded slowly or felt janky on mobile devices. Agencies that adapted quickly positioned themselves as partners who understood the intersection of design and performance, not just visual aesthetics. Clients began expecting designers and agencies to address loading speed, responsive layouts, and interactive responsiveness as core deliverables, not afterthoughts. This shift also opened opportunities—agencies that could demonstrate improved rankings and user experience metrics gained competitive advantage in their pitches.

Practically, you can apply these 2021 lessons by auditing your current client sites and your own processes. Start by running websites through Google's PageSpeed Insights and checking Core Web Vitals performance. Many design systems that looked good in 2019 fail these metrics due to unoptimized images, render-blocking JavaScript, or cumulative layout shifts from poorly designed interactive elements. When taking on new projects, build performance budgets into your design specifications—decide how large your CSS and JavaScript can be before the project starts, not after design is complete. This requires collaboration between designers and developers from day one rather than a handoff approach. Additionally, prioritize mobile design as your starting point. The 2021 shift wasn't just about making sites responsive; it was about designing the mobile experience first and scaling up, since most users arrive on mobile devices.

For positioning your agency to clients today, reference the lessons from 2021 when explaining why their website redesign needs to consider performance alongside aesthetics. Show them case studies where improved Core Web Vitals led to ranking improvements or conversion rate increases. Offer performance optimization as a distinct service that complements design work, whether that's image optimization, code splitting, or hosting improvements.