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Building a Fast, SEO-First Local Business Site with Next.js App Router

Most local business websites are slow, template-bloated, and invisible to search. I recently built one that scores 100 on Lighthouse SEO and Best Practices, ships zero client-side CMS weight, and generates its own sitemap, structured data, and AI-crawler manifest from a single data file. Here's how, with code you can lift into your own project.The finished result is live at browardacguys.com if you want to view-source along the way.One data file, many pagesThe trick to a maintainable local site

MedSpeak

When I first built MedSpeak, you had to type the shorthand in by hand. That's fine for a demo, but the whole point of a label is that it's already written down — so the natural next step was letting people snap a photo of the label and skip typing entirely.This update adds in-browser OCR via Tesseract.js, switches the page to a JSON API instead of form posts, and keeps everything else — the lookup tables, the decoding logic — exactly the same. 1. What changed under the hoodThe translation l

Figma to Code in 2026: React, React Native & HTML (The Complete Guide)

I've rebuilt the same Figma design in React by hand more times than I'd like to admit — squinting at the inspector panel, copying hex codes, nudging padding by 2px until it finally matched the mockup. So while building GenVibe, I went deep on every way to turn a Figma file into real code.Here's everything I learned: what actually works in 2026, what still doesn't, and the workflow I now use to go from a Figma frame to a running app in about 15 minutes — for React, React Native, and plain HTML.

I Built a Free Browser-Based Keyboard Testing Tool with Next.js

As developers, we often need to verify whether a keyboard is working correctly. Maybe a key has stopped responding, a mechanical switch is chattering, or you're trying to test anti-ghosting before gaming.Most existing tools either require downloading software, contain intrusive ads, or don't provide enough information for debugging.So I decided to build KeyboardTester.👉 https://keyboardtest.techWhy I Built ItThe goal was simple:No installationNo account requiredWorks instantly in any modern brow

Why I Built Yet Another JavaScript Date Picker

Every developer has had this moment.You need a date picker, so you start searching.You find one that's perfect... until you realize it requires React.Or Vue.Or jQuery.Or an entire date library just to select a few dates.After trying several solutions, I kept asking myself:Why is such a common UI component often more complicated than it needs to be?So I decided to build my own.Meet RollDate. The GoalI didn't want to create "another date picker."I wanted to build something that I would actual

What are Partitioned cookies (CHIPS), and why can+t your cookie editor see them?

I cleared "all cookies" for a site, reloaded, and a tracking cookie was still there. Not a caching issue — the cookie genuinely came back. That's what sent me down the CHIPS rabbit hole, and it turns out most cookie tools quietly hide a whole class of cookies from you.Here's the short version of what's happening. Third-party cookies got partitionedFor years, a cookie set by embed.example.com was one cookie, shared everywhere that embed appeared. That's exactly the cross-site tracking browse

Building a Linear Regression PWA with React

From a CSV file to an interactive chart, entirely in the browserLinear regression is one of the simplest statistical techniques, but it is also a useful example of how data processing, mathematics and visualization can be combined in a modern web application.In this project, I built a Progressive Web App with React that allows users to upload a CSV file containing pairs of X and Y values. The application processes the data, calculates a linear regression model, displays the resulting equat

Why Most Web Change Monitors Fail: Solving DOM Mutations and False Positives

If you have ever tried building a website change detection system or visual testing tool, you’ve likely stumbled into the "False Positive Trap."You configure a cron job to monitor a target URL, take snapshots every 15 minutes, and compare them. But within hours, your inbox is flooded with alerts for:Tailwind CSS dynamic hash class mutations (e.g. class="bg-blue-500_a3f9" turning into class="bg-blue-500_b81c" after a deployment)Lazy-loaded images rendering at offset offsetsAnti-bot verification s

Understanding Monads in TypeScript: A Practical Guide

You have read five blog posts about monads. Each one started with category theory, mentioned burritos, and left you more confused than before. Let's skip all of that.Here is the short version: a monad is a container that supports three operations. You already use two monads every day in TypeScript — Promise and Array. Once you see the pattern, every monad in @oofp/core will feel familiar. The Three OperationsEvery monad has three things:of(a) — Put a value into the container.map(f) — Transf

TypeScript Pipe Function: Composing Functions Without the Nesting Hell

Look at this code and tell me the order of operations:const result = uppercase(trim(removeSpaces(validate(input))));You read it left-to-right, but it executes right-to-left. validate runs first, then removeSpaces, then trim, then uppercase. The reading order is the opposite of the execution order.Now add one more step:const result = format(uppercase(trim(removeSpaces(validate(input)))));And another:const result = encode(format(uppercase(trim(removeSpaces(validate(input))))));This does not scale.

Functional Error Handling in TypeScript: Beyond try-catch

Every TypeScript developer has written something like this:function getUser(id: string): User { const user = db.findUser(id); if (!user) throw new Error("User not found"); return user;}The function signature says it returns a User. But that's a lie. It might throw, and nothing in the type system warns you about it. The caller has to remember to wrap it in try-catch, hope they handle the right error type, and accept that the compiler won't help if they forget.This is the fundamental problem wi

Dependency Injection in TypeScript Without Classes or Decorators

You want dependency injection in TypeScript. So you reach for InversifyJS, tsyringe, or NestJS. You add reflect-metadata to your entry point. You slap @Injectable() on every class. You register bindings in a container. You configure modules. You emit decorator metadata. You lose tree-shaking. And after all that setup, the compiler still cannot tell you if you forgot to register a dependency — you find out at runtime.There is a simpler way. One that uses the type system itself as the DI container

Startup founders urge Trump not to shut off Chinese open weight AI

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Why We Built IconSearch: Searching 350,000+ Free SVG Icons in One Fast Engine

Every developer and designer knows the drill: you’re building a feature in React or Vue, and you need a specific icon—say, a shopping cart or a subtle chevron.You open 5 different tabs: Lucide, Heroicons, Phosphor, FontAwesome, and Tabler. You find an icon, copy the raw SVG, tweak the stroke width manually in code, convert it to a React TSX component, and realize the design language doesn't match the rest of your app.We got tired of repeating this workflow on every project. So we built IconSearc