I open-sourced the financial charting library we use in production
If you've ever tried to build a trading dashboard, a crypto portfolio tracker, or any financial app, you probably ran into the "charting problem" pret…
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I built a real-time multiplayer 3D IDE with WebRTC voice chat and AI generation from scratch 🚀
Hi DEV community! 👋 I want to share a project I've been working on: IA Code Studio ( https://ia-codestudio.com ). It is a next-generation interactive …
I Built a Web-Based Code Editor for SA-MP Scripting
I Built a Web-Based Code Editor for SA-MP Scripting — Here's Why A lightweight, browser-based code editor built specifically for SA-MP (San Andreas Mu…
React 19 Concurrent Rendering Deep Dive: Actions, Transitions, and Suspense in Production
React 19 Concurrent Rendering Deep Dive: Actions, Transitions, and Suspense in Production Most React performance issues stem from treating async opera…
Kotlin Compiler Plugin Cuts Android Startup Time by 30% in Expo SDK 56
Expo SDK 56 ships with a custom Kotlin compiler plugin that eliminates reflection from Expo Modules on Android. The result: 70% faster module initiali…
The Clean Code Handbook: How to Write Better Code for Agile Software Development
Building scalable software applications demands writing clean code that’s so simple that any dev can understand it. In this article, I’ll explain and …
I built a Chrome extension that shows which tab is eating your RAM (and frees it in one click)
The problem I kept running into I'm a chronic tab hoarder. At any given time I've got 40–80 tabs open across two windows. Chrome's built-in Memory Sav…
How we built a medicine-substitution engine that refuses to be clever
How we built a medicine-substitution engine that refuses to be clever There is a category of bugs where the code looks perfectly correct in code revie…
Building a Path-First State Engine for TypeScript Apps
I got tired of application state being split across a dozen tiny systems. One store for settings. One object for UI state. One event bus for updates. …
New developer from Morocco 👋 looking to learn and grow
Hey Dev.to 👋 I’m Anass, a graphic designer from Morocco who recently got into software development. I’ve been learning by building real projects and e…
Beyond Missing Exports: Building an Early Garbage Collector for Webpack’s TypeDoc AST
Introduction Great documentation relies on an unbroken chain of references. As I'm responsible for the API Markdown Generation Phase, one of my tasks …
Why PDF generation breaks in production (and why localhost lies)
PDF generation is one of those things that works perfectly… until real users touch it. On localhost: npm run dev Open Chrome → print → PDF. Done. Then…
TypeScript Without tsc in 2026: Type-Stripping in Node.js 24, Bun, and Deno Compared
TypeScript Without tsc in 2026: Type-Stripping in Node.js 24, Bun, and Deno Compared The End of tsc: Why Type-Stripping Changed Everything in 2026 Mos…
The Code AI Won't Write
I use a form validation problem as a technical interview question. It's deceptively simple — and the solutions people reach for reveal a lot about how…
Wuchale: One Year of Compile-Time i18n
Photo by Bernd 📷 Dittrich on Unsplash It has now been one year since the initial commit of Wuchale! A lot has happened since then and I will explore s…
The Day We Fixed Our Signup Pipeline
It started with a graph. Our signup numbers were climbing every week. The team was excited—growth was happening. But something felt off. A lot of thos…
How I Built a Zero-Dependency Token Compressor for AI Coding Agents (During My High School Exams)
as developers, we are spending more and more time working alongside AI coding agents like Cursor , Claude Code , GitHub Copilot , Windsurf , or Cline …
I built a JS/TS runtime in Rust where nothing runs without your permission
Last week I shipped v2.0.2 of 3va — a JavaScript and TypeScript runtime written in Rust. Here is why I built it and what makes it different from Node.…
I built a JS/TS runtime in Rust where nothing runs without your permission
Last week I shipped v2.0.0 of 3va — a JavaScript and TypeScript runtime written in Rust. Here is why I built it and what makes it different from Node.…
OTP Verification in Playwright Without Regex
Every developer who has written a Playwright test for OTP verification has written this line: const otp = email . body . match ( / \b\d{6}\b / )?.[ 0 …
I Built a PDF Toolbox That Never Uploads Your Files — Here's How
Every "free online PDF tool" uploads your files to a server. I built one that doesn't — and here's the technical breakdown. The Privacy Problem Try th…
Stop Rewriting UI Components for Every Project
Ever started a new project and found yourself rebuilding the same modal, dropdown, toast notification, tabs, and switches for the 20th time? I got tir…
I built a real-time Air Quality Index monitor from scratch — AtmoPulse 🌍
Hey everyone! I'm a fullstack development learner and I just finished building one of my most ambitious projects entirely from scratch — no templates,…
I built an offline wiki that fits in a single 19 KB HTML file
I kept hitting the same wall looking for an offline wiki. Kiwix is great, but it's an app plus multi-GB ZIM files. IPFS needs connectivity and setup. …
I built a 100% private, client-side suite of web utility tools (No data leaves your browser)
Hey DEV community! 👋 As a developer, I got tired of using clunky, slow, ad-choked web calculators that constantly refresh the page or track your input…
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…
I Built a Privacy-First PDF Toolbox — Your Files Never Leave the Browser
Every online PDF tool I've used uploads your documents to their servers. Tax returns, contracts, medical records — they all go to some third-party ser…
I Built a GitHub Repo Health Scorer with the Free Public API
Hackathon judges, hiring managers, and open-source maintainers all ask the same question fast: is this repo alive and looked-after? Eyeballing every r…
I built a document converter that never uploads your files
Every time you use an online PDF converter, your file travels to a server somewhere — processed by a company you don't know, stored temporarily on har…
Behind the Green Tests: My Honest HNG Internship Experience
Over the past two years, I've been a laravel developer. I've been so stuck with this framework that I felt like I didn't know much about actual progra…