Optimize Next.js Server Components with loading.tsx

Most Next.js applications are not slow because the product is complex - they’re slow because of poor foundational decisions. I just went through a practical Next.js performance checklist, and it clearly explains why Lighthouse scores drop even in “modern” apps. First, images: incorrect usage of next/image and missing priority can instantly hurt LCP. Then fonts: without next/font, you almost guarantee unnecessary render blocking. The biggest silent performance killer is third-party scripts loaded synchronously, blocking everything. And yes, many projects are still shipping too much client-side JavaScript instead of leveraging Server Components. Caching (SSR / ISR / static) is often configured by habit, not based on real traffic patterns. The takeaway is simple: in Next.js, performance is not optimization - it’s an architectural decision from day one. So what’s your Lighthouse score in production right now - 90+ or “we’ll fix it later”? #Nextjs #WebPerformance #FrontendDevelopment #ReactJS #JavaScript #WebDevelopment #SoftwareEngineering #PerformanceOptimization #Lighthouse #CoreWebVitals #FrontendArchitecture #UX #EngineeringBestPractices

What is useDeferredValue? useDeferredValue is a React Hook that returns a deferred version of a value — meaning React can postpone updating it until more important work is done. const deferredValue = useDeferredValue(value); When value changes: - React first renders with the old value - then updates the deferred value in the background This makes the UI feel responsive, even if some parts are slow. There is the example on the screenshot and there: - input updates immediately (high priority) - results update later (low priority) useDeferredValue is about prioritization. That small shift makes a huge difference in real-world UX — especially in data-heavy or interactive apps. #react #frontend #webdev #javascript #reactjs #performance

🚀 Built an Image Search App using React! Recently, I worked on a project where users can search and explore images dynamically using an API. 🔧 Tech Stack: React (Hooks: useState, useEffect) Tailwind CSS Pixabay API 💡 Key Learnings: Managing state and data flow in React Fetching and rendering API data dynamically Handling user input and triggering side effects Component-based architecture (reusable components) Conditional rendering for better UX ⚡ Features: Search images in real-time Displays likes, views, and tags Clean and responsive UI 🔍 Challenges I faced: Handling API responses and state updates Managing loading and empty states Structuring components properly Excited to keep building and move towards full-stack development 🚀 #React #WebDevelopment #Frontend #LearningInPublic #100DaysOfCode

Choosing a data grid in a React app is one of those decisions that quietly shapes everything: performance, UX, and how fast your team can ship. This comparison of AG Grid, React Table, and Ext JS Grid does a nice job of showing the tradeoffs between raw power, flexibility, and complexity. It reminded me how often we default to "what we used last time" instead of matching the grid to the actual use case. Worth a read if you're dealing with big tables, heavy filtering, or complex data workflows: https://lnkd.in/dyA4vRV5 #reactjs #frontend #webdevelopment

So , I was using Ola's web app recently and ran into something just felt off . The map was there… but locked inside a tiny, unusable box. No resize option. No fullscreen button. No settings to fix it. At that moment, I thought: Why are we not able to do this? And more importantly… Why not just build it myself? So I did. Created a simple bookmarklet (a bookmark + JavaScript) that: → Injects a button into the page → Lets me expand the map instantly → And even toggle it back when needed No extensions. No dependency , no waiting . Just one click. It’s a small thing, but it reminded me of something important: Sometimes the best solutions don’t come from waiting — they come from taking control of the tools you already use. Though it would be nice , if Ola's people fix it , it’s a simple fix .  For now Sharing the code here : https://lnkd.in/ghcF7CNE Would love to know — what’s a small UX problem you’ve always wanted to fix? #WebDevelopment #JavaScript #Frontend #UI #UX #UserExperience #WebDesign #Technology #Developers #Coding #DigitalExperience

Performance matters! A faster app = better UX 🚀 Here are 10 tips with quick examples: 1️⃣ Identify bottlenecks 👉 Use Chrome DevTools to find slow renders 2️⃣ Leverage Virtual DOM 👉 React updates only changed components, not the whole DOM 3️⃣ Enhance network requests 👉 Debounce API calls in search inputs 4️⃣ Use code splitting 👉 Load pages using React.lazy() 5️⃣ Optimize images 👉 Use WebP + lazy loading 6️⃣ Optimize state management 👉 Keep state local instead of global when possible 7️⃣ Monitor performance 👉 Run Lighthouse audits regularly 8️⃣ Use memoization 👉 Use React.memo() to prevent re-renders 9️⃣ Optimize virtualization 👉 Render lists using react-window 🔟 Use SSR & pre-rendering 👉 Use Next.js for faster initial load 💡 Small improvements = BIG performance gains! #ReactJS #WebPerformance #Frontend #JavaScript #DeveloperTips

Fixing Layout Shift Issues in React Caused by Late Loading Content Ever noticed your 𝗨𝗜 𝗷𝘂𝗺𝗽𝗶𝗻𝗴 around just when everything seems loaded? That’s a classic layout shift issue — and in React apps, it often happens 𝗱𝘂𝗲 𝘁𝗼 𝗹𝗮𝘁𝗲-𝗹𝗼𝗮𝗱𝗶𝗻𝗴 content like images, fonts, or async data. 𝗜𝗻 𝘁𝗵𝗶𝘀 𝗽𝗼𝘀𝘁, 𝗜 𝗯𝗿𝗲𝗮𝗸 𝗱𝗼𝘄𝗻: • Why layout shifts happen in React • How late-loading elements impact user experience (and 𝗖𝗼𝗿𝗲 𝗪𝗲𝗯 𝗩𝗶𝘁𝗮𝗹𝘀) • Practical techniques to prevent it — from reserving space to using 𝘀𝗸𝗲𝗹𝗲𝘁𝗼𝗻 𝗹𝗼𝗮𝗱𝗲𝗿𝘀 • Real-world patterns you can apply immediately in your projects A smooth UI isn’t just about design — it’s about stability. Fixing layout shifts can significantly improve both UX and performance scores. 𝗜𝗳 𝘆𝗼𝘂'𝗿𝗲 𝗯𝘂𝗶𝗹𝗱𝗶𝗻𝗴 𝗺𝗼𝗱𝗲𝗿𝗻 𝗥𝗲𝗮𝗰𝘁 𝗮𝗽𝗽𝘀, 𝘁𝗵𝗶𝘀 𝗶𝘀 𝘀𝗼𝗺𝗲𝘁𝗵𝗶𝗻𝗴 𝘆𝗼𝘂 𝗱𝗼𝗻'𝘁 𝘄𝗮𝗻𝘁 𝘁𝗼 𝗶𝗴𝗻𝗼𝗿𝗲. #ReactJS #WebPerformance #FrontendDevelopment #UIUX #CoreWebVitals #JavaScript #CleanCode

Ever wanted to open a modal without leaving the page… but still keep a real URL? That’s exactly where Next.js Intercepting Routes quietly change the game. After working deeply with Next.js in real production apps, this is one of those features that feels small at first… but completely shifts how you design UX. Let’s break it down simply. Intercepting Routes let you “intercept” navigation and render a different route than what the URL suggests without actually leaving the current layout. What this really means is: You can show content like a modal, drawer, or overlay while still updating the URL. Example use case: You’re on a feed page → you click a post → instead of navigating away, it opens in a modal But the URL becomes /post/123 Refresh the page? Now it loads as a full page. That’s powerful. How it works (conceptually): Next.js uses a special folder pattern like: (.) or (…) This tells the router: Hey, render this route here temporarily instead of fully navigating. So you get: • Shared layout stays intact • UI feels instant • URL remains meaningful Why this matters: → Better UX No hard page transitions. Everything feels fluid. → Real URLs Users can share, bookmark, and reload seamlessly. → Cleaner architecture You don’t need hacks with state-heavy modal logic anymore. Common patterns you can build: • Image preview modals • Product quick views • Auth popups (login/signup) • Side drawers with details • Nested content without losing context Things to watch out for: • It can get confusing if you don’t plan your route structure well • Debugging parallel + intercepting routes together needs clarity • SEO behavior depends on fallback routes (don’t ignore this) Intercepting Routes aren’t just a routing feature. They’re a UX upgrade baked into your architecture. Once you start using this properly, going back to traditional routing feels… limiting. Have you tried Intercepting Routes in your project yet? #NextJS #WebDevelopment #Frontend #ReactJS #FullStack #JavaScript #UX #WebDev #SoftwareEngineering #DevTips

The Dev Journal #5 Users may not always notice design details — but they always feel performance. A fast interface creates a smoother, more engaging user experience. Speed is not just technical — it’s part of great design. #PerformanceOptimization #FrontendEngineer #WebDevelopment #ReactJS

You click 'Like' on a post. The heart turns red instantly. ❤️ But did the server confirm it? Not yet. That's Optimistic Updates — and it's one of the smartest UX tricks in frontend development. --- Here's the idea: Instead of waiting for the server to respond, you update the UI immediately — then reconcile once the response arrives. ✅ Server succeeds → nothing changes, user never noticed the gap ❌ Server fails → you roll back silently --- Why does it matter? → Your app feels instant, even on a 3G connection → Users don't stare at loading spinners for simple actions → The difference between a "slow app" and a "fast app" is often just this one pattern --- But here's what we must get right: ✔ Always snapshot the previous state before updating the UI ✔ Roll back immediately if the server responds with an error ✔ Sync with the server after the request settles — success or failure Libraries like React Query make this clean with onMutate → onError → onSettled hooks. --- When TO use it: ✔ Likes, toggles, checkboxes ✔ Drag-and-drop reordering ✔ Read/unread status ✔ Auto-save form fields When NOT to: ✗ Payments ✗ Irreversible deletes ✗ Anything with real business consequences --- The rule of thumb: use optimistic updates when failure is rare and rollback is easy. Are you using this pattern in your apps? Drop a comment 👇 #React #FrontendDevelopment #WebDev #JavaScript #UX #SoftwareDevelopment