Installed, but nothing shows": building an install check for a third-party widget
Any product that ships a <script> tag for customers to paste into their site gets the same support ticket: "I installed it, but nothing shows.…
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Building Dashboards with React: A Practical Guide to Reusable Components and Data Visualization
Dashboards are often the first place users go when they want to understand what is happening in an application. Whether you are building an analytic…
Why AND(0, ?) is 0: three values, snapshots and memory in a logic simulator
In my last post I planned a feature, and executing it turned up a bug: the simulator could not hold a bit with two gates. The first circuit in every…
My first web project: 95 pages, 49 indexed, 0 visitors. What would you do (for free)?
This is my first web project, so please assume I know nothing. I'm learning in public and I'd love your recommendations. I built a solar savings cal…
I built a free, open-source platform with 180+ developer tools and 18 technical guides (Built with Astro)
Hey Dev community! I want to share a project I've been building: Th-Tech. It's a comprehensive, free, and open-source platform for developers. Why I…
Create an AI Dubbing Tool for Video Content
Why Build Your Own AI Dubbing Tool? If you’ve ever needed to localize a video, add a narration track, or simply replace a shaky on‑camera voice, doi…
Streaming LLM-Generated UI in React 19 with OpenUI Lang
Every generative UI demo I have shipped hits the same wall: the model emits a JSON component tree, and nothing paints until the closing brace arrive…
Architecture Patterns for Custom Direct Booking Engines & Hospitality Web Apps
When building web applications for the hospitality sector—ranging from luxury boutique hotels to private villa rentals—developers often face a choic…
Don't feed the whole file to the AI: meet Sentinel-IR
description: "A free JavaScript package that turns a source file into a short, structural note for an LLM: what it touches, how risky it is, and whe…
Building a Production WhatsApp Cloud API Webhook in Node.js & Express
Connecting your backend to Meta's official WhatsApp Cloud API allows you to send automated transactional alerts, customer support messages, and inte…
The wappalyzer npm package is deprecated: options for detecting tech stacks in code
For years, npm install wappalyzer was how developers detected a website's technologies in code. The package's last release, 7.0.3 from August 2023,…
Building an AI-Powered WhatsApp Bot with Webhooks, CRM, and Real-Time Routing
Automating customer interactions on messaging channels has shifted dramatically over the past year. Traditional keyword-based decision tree bots are…
Using AutoClaws free GLM models usage from other sdks (opencode / claude code)
ive been maintaining this small opensource project GLM Proxy (glmproxy on npm) for a while and its finally on the level where im happy to share it o…
Type-Safe Web Scraping for AI Agents: Integrating Firecrawl into a TypeScript Monorepo
Type-Safe Web Scraping for AI Agents: Integrating Firecrawl into a TypeScript Monorepo When building AI agents that need fresh web data, you hit two…
I'm 13. I Spent 101 Days Building a Secure Social Network with Node.js
Hey dev community! 👋🏻 I'm Seif, a software engineer with 4 years of experience who absolutely hates vibe-coding and prefers designing architecture b…
CrUX Now Counts SPA Soft Navigations. 5 Things I'd Check Before Search Console Switches
For years, the Chrome UX Report (CrUX) has had a blind spot. If your site is a single-page app, Chrome only recorded the first "hard" page load. Eve…
Compare building a modern React CRUD application with REST versus GraphQL. Understand query shapes, state mutations, and implementation patterns
Whenever I start a new client project or evaluate an architecture for a team, I inevitably get asked the same question: "Should we build our fronten…
How to Get a Table Out of a PDF Without Uploading the File
Bank statements, invoices and supplier price lists often arrive as PDFs. When you need the numbers in a spreadsheet, the usual advice is to upload t…
How to Run a Fair Secret Santa Draw Online (Free, No Signup)
Every December the same scene plays out in offices and group chats: someone volunteers to organize Secret Santa, everyone is excited, and then the o…
Build a Real-Time Voice Translation App
Getting Started with a Real‑Time Voice Translation App Building a real‑time voice translation app feels like science‑fiction, but with today’s cloud…
React Frontend Plus NodeJS Backend Error Capture for Tenant Cohort Incident Reconstruction
A thin correlation layer beats a large monitoring rollout when the immediate job is reconstructing which tenant cohort saw a fintech experiment fail…
I built a free GitHub profile README generator with no badge APIs, no backend and a 3D contribution universe
README-Glassfolio turns your GitHub username into a themed profile README (banner, stats, heatmap, 3D universe, projects) as plain SVGs in your own…
Building a 60fps Canvas Frustum Camera for 4K System Architecture Presentations
When presenting a complex enterprise topology—whether it's a multi-region Kafka cluster, a distributed consensus state machine, or an intricate doma…
JavaScript Error Handling: Custom Error Types, Result Pattern, Global Handlers, and Error.cause
JavaScript error handling is often an afterthought — a try/catch here and there. But a robust error handling strategy makes the difference between a…
Inside a pupa you can rewind: deriving every frame from t alone (Canvas 2D)
A caterpillar becomes a pupa and then an adult. Inside the pupa, much of the larval body breaks down and the adult body is rebuilt. I made a page th…
Regex in Firefox: Named Groups, Unicode Support, and DevTools Debugging
Firefox's DevTools include regex testing capabilities, and Firefox's JavaScript engine has some regex-specific features worth knowing for developers…
Testing Security Headers in Firefox: CSP, HSTS, X-Frame-Options, and DevTools Debugging
Security headers are server-side HTTP headers that instruct browsers on security behavior. Firefox implements all the major ones. Here's a practical…
Firefox for Testing and Automation: geckodriver, Playwright, and CI Pipelines
Firefox is an excellent choice for automated testing and web scraping — it has official WebDriver support (geckodriver), a stable API, and unique fe…
Your screenshot tool is the leak — doing redaction entirely client-side
The most common way people redact a screenshot is still this: Take the screenshot. Search "blur image online". Upload it to the first result. Blur t…
React Error Boundaries Explained: Handle UI Errors Gracefully
Every React application eventually encounters unexpected errors. A component might fail while rendering, a third-party library could throw an except…