How to write a project brief that actually helps you hire a Next.js developer
Writing a good brief before you hire a Next.js developer is the single thing that separates projects that land on time from ones that drift for months…
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The worked example that disagreed with its own calculator
I run a small site of home-improvement cost calculators ( costto.build ) — pick a project, get a low / average / high estimate with a materials-and-la…
How I Built and Deployed 288 Client-Side Calculators in 3 Weeks 🚀
Hey Dev.to community! Over the last 3 weeks, I’ve been working on a massive product sprint: building a completely local-first web directory called Cal…
How We Migrated a Client from WordPress to a Custom Next.js Storefront
Last year, a client came to Paradane with a WordPress/WooCommerce store that was buckling under growth. Page loads were hitting 6 seconds, the checkou…
Setting up Supabase Auth with Next.js in 10 minutes
Every time I started a new project, auth killed my momentum. Setting up JWT, hashing passwords, managing sessions, handling refresh tokens... before w…
How I Built the Two Missing Payload CMS v3 Plugins — Reviews, JSON-LD & Real Production Bugs
Running 23 European e-commerce shops on Payload CMS v3 taught me that some things simply don't exist yet. So I built them. Background I maintain a mul…
I'm Building an Infinite Full-Stack Assembly Line (And Why the Boilerplate Market is Dead)
Every developer knows the absolute worst part of starting a new software project.It isn't writing the features, designing the UI, or talking to users.…
I tried "GEO" on my indie tool — it was just SEO (here's the GSC data)
Every other newsletter this year told me my SaaS needed GEO — Generative Engine Optimization. Write an llms.txt . Add "AI-only" schema. Chunk your con…
React 19 Hydration Mismatch in Static Export
📚 This is Part 3 of the UtlKit Tech Series — Part 2 covers the architecture & trade-offs → Read Part 2 React 19 Static Export Hydration Mismatch? …
I built Reclaim: an AI tool that finds medical billing errors and writes your appeal letters
Americans owe $220 billion in medical debt, and 80% of medical bills contain errors — duplicate charges, upcoded procedures, unbundling, wrongful deni…
I Built a 4-Sided Plot Area Calculator with 2D & 3D Visualization
I Built a 4-Sided Plot Area Calculator with 2D & 3D Visualization Most online plot calculators only work for simple rectangular plots. However, ma…
The Next.js Data Cache Error That Broke My Production App (And How I Fixed It)
The Next.js Data Cache Error That Broke My Production App (And How I Fixed It) A real bug from building Flacron Gamezone — a live football platform bu…
How I built an automated SBOM scanner to secure my supply chain 🛡️
Supply chain security is terrifying right now. With new vulnerabilities popping up daily and governments mandating compliance (like the EU CRA and US …
Generating valid .ics calendar feeds at build time
A few weeks ago I shipped a feature I'd been putting off because it felt like it needed a backend: subscribable calendar feeds. "Add this holiday to G…
Interview Tree: Turning User Interview Transcripts into Structured Opportunity Trees with Claude
I built Interview Tree because synthesizing user interview transcripts by hand is slow and error-prone. Reading through long conversations to find rec…
Building a Production-Ready E-Commerce Platform with Next.js
Most e-commerce tutorials stop after implementing a product page, shopping cart, and checkout process. Real-world e-commerce platforms are much more c…
One SSE stream, seven LLM providers: giving a Next.js app a single streaming code path
How I made OpenAI, Claude, Gemini, Ollama, Mistral, Groq and Azure look identical to the browser — with no database, no backend secrets, and the user'…
How I built a flash-sale engine that can't oversell
I created this piece of content for the purpose of entering the H0: Hack the Zero Stack hackathon. #H0Hackathon The problem (that's harder than it sou…
How I Built a 24 Game Solver: Brute-Force Meets Elegance in TypeScript
The 24 Game is deceptively simple: given four numbers, combine them with + , - , × , ÷ to make exactly 24. Sounds easy, right? Try solving 1, 5, 5, 5 …
Portable: A Financial Platform for Gig Workers (HackNomics 2025)
What it is Portable is a financial platform I built for HackNomics 2025, aimed at the 70 million Americans working in the gig economy. The core idea: …
Playbooks: a community feed where Claude builds structured plans for life's biggest moments
I built Playbooks because I kept running into the same problem: Notion is too blank, and ChatGPT gives you walls of text. Neither gives you a structur…
I Built an AI Symptom Tracker That Generates Doctor-Ready Reports
What It Is AI Wellness Journal is a symptom tracking app built with Next.js, Supabase, and Google Gemini. You log daily symptoms with severity ratings…
Mutuals: a taste-based social discovery app built with Next.js and Claude
What it is Mutuals is a social discovery app. You tell it 8–10 things you love — bands, films, books, games, places — and it matches you with people w…
I Cut My Next.js + Supabase App Load Time by 73% - Here Are the 5 Techniques That Actually Worked
I Cut My Next.js + Supabase App Load Time by 73% - Here Are the 5 Techniques That Actually Worked Last month, our SaaS dashboard was embarrassingly sl…
Next.js + Supabase Performance Optimization: From Slow to Lightning Fast
Next.js + Supabase Performance Optimization: From Slow to Lightning Fast Last month, I optimized a Next.js + Supabase application that was frustrating…
Next.js Pages Router to App Router Migration Guide (2026)
Migrating from Next.js Pages Router to App Router is a significant but manageable project. The recommended approach is incremental - both routers can …
T3 Stack Complete Guide 2026: Next.js 15, tRPC v11, Drizzle + Neon
The T3 Stack was created to solve one specific problem: full-stack TypeScript apps where the type safety falls apart at the API boundary. You define t…
Building a Movie Platform with Next.js and TMDB API
As part of my journey toward becoming a better full-stack developer, I wanted to build something that would help me deepen my understanding of Next.js…
Building a Movie Platform with Next.js and TMDB API
As part of my journey toward becoming a better full-stack developer, I wanted to build something that would help me deepen my understanding of Next.js…
How I Built a Property Matching System Using Euclidean Distance
Most accommodation platforms sort by price and star ratings. When I started building Voyera , a ski accommodation platform for Niseko, Japan, I wanted…