Avoid these Painful Mistakes Slowing your Next.js apps


Hey friend,

I have some good news ๐ŸŽ‰.

I've been working hard on offering a Exclusive Live Workshop on Next.js.

Want to take your Next.js skills to the next level and learn how to build a production ready, modern and full stack app?

well, this workshop is for you!!

โ€‹You can read more about the workshop here โ†—๏ธโ€‹

As a special thank you for reading my weekly newsletter, I plan to offer some launch discounts and exclusive bonuses to folks on the waitlist so please add yourself to the waitlist if you are interested.

Clicking this button will add you to the waitlist โœจ


Here are a five common mistakes I've seen developers make in Next.js that are truly slowing your apps.

  • Not Utilizing the sizes Prop with the Image Component ๐ŸŽจ
  • Incorrect Usage of Loading States in Server Actions ๐Ÿ”
  • Misplacement of Redirect Functions in Server Actions โ†
  • Inadequate Cache Management ๐Ÿ“ฆ
  • Improper Component Architecture ๐ŸŒ

We won't be diving into each one but only "Not utilizing the sizes Prop with the Image component".

To watch the rest, you can check out my Youtube video here โ†—๏ธโ€‹

๐Ÿฟ Our Weekly Snack: Not Utilizing the sizes Prop with the Image Component

Here is a quick code snippet,

For optimal performance benefits with Next.js's image component, it's essential to specify the sizes prop along with fill={true} property to ensure the appropriate image size is served based on viewport dimensions.

Failure to do so may result in inefficient image loading, causing larger images to be downloaded unnecessarily. This means you'll download an image 3x the size on a smaller mobile device.

This can easily slow down your app performance.

Weekly Youtube Videos ๐Ÿ’–

I've been asked to create a video a deep dive into Caching for a while now so here you go.

Check out the below video on Next.js Caching or master Next.js by taking my completely free Crash Course.

Master Next.js Caching in 25 minutes

video previewโ€‹

Ultimate Next.js Crash Course ๐Ÿš€

video previewโ€‹

Check it out and subscribe to my channel for more content related to Frontend, Leadership and Career Development. ๐Ÿ’ช

Frontend News & Developers Toolbox ๐Ÿงฐ

  • A compiler for React called React Unforget โ†—๏ธ that optimizes components and hooks for performance and readability.
    โ€‹
  • Do you like ESLint, but for performance? Million Lint โ†—๏ธ is a VSCode extension that keeps your React website fast. They identify slow code and provide suggestions to fix it.
    โ€‹
  • Vercel has a new SDK for AI 3.0 โ†—๏ธ, a generative UI design tool that converts text and image prompts to React UIs and streamlines the design engineering process.

Ankita Kulkarni

Join 9200+ subscribers reading by weekly personalized Newsletter that helps developers level up their skills through weekly Frontend and Leadership Snacks. You get a deep dive into a Tech topic, Actionable tips to excel in your career and a toolbox!

Read more from Ankita Kulkarni
AI SDK Wrapper

Hey Reader, A couple of weeks ago, I kicked off the AI Agent Series ๐Ÿง โš™๏ธ and the response has been wild ๐Ÿคฏ. So many of you said, โ€œI had no idea it was this fast to build AI Agentsโ€. I walkthrough simple AI Agent Frameworks like this to make it useful for you. AI Agent Framework No fluff, no abstractions. Just real tools, real use cases, and clean architecture that you can build on. And Today, weโ€™re diving into an AI tool that every developer should be using and is probably missing from your...

The Subtle UX Trick That Makes Apps Feel Premium

Hey Reader, Iโ€™ve kicked off a brand-new series on YouTube: The AI Agent Series where youโ€™ll learn how to build, deploy, and scale powerful AI Agents from scratch. To get started, check out the series here โ†—. I listed down tasks I'd hire for and instead, built an AI Assistant Agent with Convex, WorkOS Authkit and Next.js. This week, I'm dropping a video showing ๐Ÿ“น How I shipped a AI Agent SaaS in just 13 minutes and we'll buid your own Assistant step-by-step. Now onto todayโ€™s sponsor ๐Ÿ‘‡...

Create Your First AI Agent

Hey Reader, Ever Wish You Had a Senior Engineer Reviewing Your Code 24/7? ๐Ÿง Now you do and itโ€™s powered by AI. This is Part 1 of my new AI Agent Series where weโ€™re building and deploying real AI agents that can think, analyze, and act like a senior software engineer ๐Ÿค“. This project is called AI Code Reviewer and itโ€™s not just a fancy chatbot. It remembers past messages, gives contextual feedback and helps you ship better code, faster. Here's the Tech Stack: โ†’ โšก Next.js 15 + React 19 โ†’ ๐Ÿง  Convex...