When using Next.js and Vercel, it's crucial to optimize your images for the web. This includes resizing images to the correct dimensions, compressing them to reduce file size, and using modern image formats like WebP. By neglecting image optimization, you risk slowing down your site's load times and causing a poor user experience.

One of the key features of Next.js is its support for server-side rendering. By neglecting to implement SSR in your application, you may miss out on significant performance gains and SEO benefits. SSR helps pre-render pages on the server, resulting in faster load times and improved search engine visibility.

Next.js introduced Incremental Static Regeneration as a feature that enables developers to update static content on-demand without regenerating the entire site. By failing to leverage ISR, you may end up with stale content on your site and miss out on the benefits of real-time updates without compromising performance.

Alongside image optimization, asset optimization plays a crucial role in enhancing page speed and overall performance. By ignoring asset optimization techniques such as minification, bundling, and lazy loading, you risk delivering bloated files to users, resulting in longer load times and increased bounce rates.

Code splitting is a technique that involves breaking down your codebase into smaller chunks that are loaded only when needed. By neglecting to implement code splitting in your Next.js application, you risk sending unnecessary code to users, resulting in slower initial load times and decreased performance. Utilize code splitting to improve user experience and optimize resource usage.

Google's Lighthouse tool is a powerful resource for evaluating web page performance, accessibility, best practices, and SEO. By skipping regular Lighthouse audits, you may overlook critical areas for improvement and miss out on opportunities to enhance your site's user experience and search engine rankings. Make Lighthouse audits a regular part of your development workflow to identify and address issues proactively.

Implementing caching strategies, such as browser caching, server-side caching, and CDN caching, can help reduce the load on your server and speed up page loads for users. By neglecting caching mechanisms in your Next.js application, you risk delivering stale content, increased server load, and slower performance. Leverage caching to enhance user experience and optimize resource usage.

Critical CSS refers to the minimal CSS required to render above-the-fold content on a web page. By ignoring critical CSS optimization, you risk delaying the rendering of essential content, leading to slower perceived load times and a subpar user experience. Implement critical CSS techniques to prioritize styling critical elements and improve initial page rendering.

While third-party libraries can provide handy functionality, using too many or bloated libraries can harm your application's performance. By including unnecessary dependencies, you increase the size of your bundle, leading to longer load times and reduced performance. Opt for lightweight or custom solutions whenever possible to streamline your application and optimize performance.

Errors are inevitable in any web application, but neglecting proper error handling and monitoring can lead to user frustration and lost opportunities. By implementing robust error handling mechanisms and monitoring tools, you can proactively detect and address issues, ensuring a smooth user experience and high application reliability. Prioritize error handling to maintain user trust and application integrity.