Next.js introduces practical tools for developers to optimise images and fonts, tackling Core Web Vitals challenges without complex pipelines. New features such as the built-in <Image> component, blur placeholders, and self-hosted fonts streamline performance improvements for faster, more stable pages.
Images and fonts often decide whether a Next.js page feels fast or sluggish, even when the code itself is well structured. The Tekraze article argues that visual assets are now a major threat to Core Web Vitals, particularly Largest Contentful Paint and Cumulative Layout Shift, and that Next.js offers practical tools to control both without building a separate optimisation pipeline. Its central point is straightforward: if a page still relies on plain <img> tags and unserviced web fonts, performance will usually suffer before the JavaScript bundle becomes the main problem.
The built-in <Image> component is the first line of defence. According to the Next.js documentation, it extends the standard HTML image element by serving correctly sized files for each device, applying modern formats where possible, and reducing layout instability by reserving space before the image appears. That matters because an oversized image can waste bandwidth on mobile connections, while an image without known dimensions can push content around as it loads. The Tekraze guide also stresses the priority prop for the single image that forms the page’s main visual element, because that instructs Next.js to fetch it early rather than treating it like an off-screen asset.
A further gain comes from visual placeholders. The article recommends placeholder="blur" so that a tiny low-resolution version appears instantly while the full file downloads. Next.js documentation describes the same general approach as a way to improve perceived speed and preserve layout stability, which is especially useful on image-heavy landing pages and editorial templates. For images that come from a database or content system, the Tekraze post notes that developers can generate blur data server-side and pass it into the component, preserving the effect even when the image is not statically imported at build time.
Fonts are the other frequent cause of avoidable jank. The article distinguishes between FOIT, where text remains hidden until the font is ready, and FOUT, where a fallback face is shown and then replaced, often causing the layout to shift. Next.js’ next/font system addresses both by self-hosting font files during the build and adjusting fallback metrics so that the replacement does not noticeably move the page. The result is a cleaner loading experience and less dependence on third-party font endpoints. The Tekraze piece also recommends variable fonts, which combine multiple weights and styles into a single file, reducing the number of separate assets that need to be fetched.
The wider lesson is that performance work does not end with minification or code splitting. According to Next.js documentation, image optimisation should be paired with responsive delivery and lazy loading, while remote images still need proper configuration in the application so they can be resized and served efficiently. The Tekraze article adds an important deployment point: even highly compressed images and fonts still depend on distance, so distributing assets through a CDN or edge network remains critical. For teams building on Next.js, the practical path is clear: reserve space for images, preload only the true hero asset, use blur placeholders where they improve perception, and let next/font handle typography rather than leaving text rendering to the browser’s default behaviour.
Disclaimer: This content is intended for informational purposes only. Readers are advised to exercise their own judgement, conduct due diligence, or consult a qualified expert before acting on any information provided.
