How We Turned a High-Traffic News Site's Core Web Vitals from Red to Green
The setup: a news site where every millisecond is public Kapital.kz is one of Kazakhstan's high-traffic business and finance news portals, built on Ne…
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Convert a whole folder of images to WebP — locally, no upload, one command
Every few months I hit the same wall: a folder full of .jpg and .png files that need to be WebP before they go anywhere near production. And every few…
Day 127 of Learning MERN Stack
Hello Dev Community! 👋 It is officially Day 127 of my software engineering marathon! Today, I leveled up my asynchronous data pipeline in React.js by …
Stop API Spam: Debouncing React Inputs ⚡
The Live Search DDoS Live search inputs are a staple of modern B2B dashboards at Smart Tech Devs. As the user types into the "Find Client" box, the da…
Stop Auth Flickers: Edge Middleware in Next.js ⚡
The Amateur UI Flicker When building protected routes (like /dashboard ) in a React Single Page Application (SPA), developers usually handle authentic…
Fix Core Web Vitals: Offload Scripts with Partytown ⚡
Liquid syntax error: Variable '{{% raw %}' was not properly terminated with regexp: /\}\}/
🚀 Introducing Prism Guard — An Open Source Frontend Architecture Intelligence Platform
Every engineering team has experienced this. The codebase starts clean. A few months later... Components become 500+ lines long. Anonymous components …
Fix Web Performance Issues Faster with Modern Web Guidance and Chrome DevTools for AI Agents
Performance optimization has always been one of the hardest parts of web development. You run Lighthouse, record a Performance trace, identify a long …
Google just shipped an official "agent-ready" toolkit. Here's the one thing it can't measure.
For most of 2026, "is my website agent-ready?" was a question you answered with vibes and a blog post. As of last week, Chrome answers it with a toolk…
Stop Wasting Bandwidth: Master API Caching with ETags ⚡
The Redundant Data Tax In data-dense B2B SaaS platforms at Smart Tech Devs, clients constantly poll your API for updates. Imagine a dashboard making a…
Your structured data is probably broken, and your crawler isn't telling you
Most on-page audits catch the obvious stuff: a missing title here, a duplicate meta description there. The thing that quietly costs you rich results i…
Building High-Performance E-Commerce Sites for Niche Fashion: A Developer's Guide
The Challenge of Niche E-Commerce Niche fashion retailers—think specialized clothing, accessory boutiques, or heritage brands—face a unique technical …
Sentry vs OpenTelemetry: You Don’t Need to Pick One
TL;DR — If your backend already uses OpenTelemetry, you can send traces and logs to Sentry by changing a few environment variables. No SDK swap, no in…
Stop Race Conditions: React AbortControllers ⚡
The Unmounted Component Trap In highly interactive dashboards at Smart Tech Devs, users navigate quickly. Imagine a user clicks a "Generate Heavy Repo…
I Benchmarked 17 Image Conversions on My Production Server. Some Results Were Not What I Expected.
I run Convertify , a free image converter built on Rust and libvips. Last week I decided to stop guessing about format performance and actually measur…
The CSS-in-JS Penalty: Zero-Runtime Styling in React ⚡
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Compile Zod (30x faster Zod validation)
Lets start with a code example: import { pool , sql } from " ./db.js " ; import { z } from " zod " ; const getUser = ( id : number ) => { return po…
How I get marketing sites to 100/100 on mobile Lighthouse (the exact Astro setup)
Open zivaro.co.za in PageSpeed Insights on the mobile profile. Performance 100, Total Blocking Time 0ms, and that is on the Moto G Power, Slow 4G prof…
Stop Blocking the UI: Interruptible Rendering in React ⚡
Liquid syntax error: Variable '{{% raw %}' was not properly terminated with regexp: /\}\}/
Image Optimization for Modern Web Applications: Formats, CDNs, Automation
Images account for 50-70% of a typical web page's weight. Optimizing them properly — choosing the right format, generating responsive sizes, automatin…
Zero Perceived Latency: Architecting Optimistic UI in React ⚡
Liquid syntax error: Variable '{{% raw %}' was not properly terminated with regexp: /\}\}/
60fps Real-Time Graphics: OffscreenCanvas in Next.js ⚡
The Interactive Dashboard Bottleneck Modern enterprise platforms at Smart Tech Devs demand high-density data visualizations. We build tracking spaces …
Cut Network Latency: Optimize Next.js with Brotli ⚡
The Overlooked Bandwidth Tax When optimization is discussed in modern frontend development, developers frequently focus on component code-splitting or…
Getting images actually web-ready: compress, resize, and pick the right format without opening an editor
A surprising amount of "my site is slow" comes down to one thing: someone dropped a 4032x3024 photo straight off their phone into a content block that…
How we cut INP from 480ms to under 200ms on a legacy site (no rewrite)
Most "make it faster" advice assumes you can rebuild. On real small-business sites — a clinic on WordPress, a retailer on a 2018 theme — you usually c…
How to Onboard a New Client for Performance Monitoring
You sold performance monitoring on the proposal, and the contract is signed. Now delivery has three days before someone asks why nothing is live yet. …
Vendor Chunking: The React Optimization I Wish I'd Known Earlier
I ignored my bundle size for months. By the time I checked, my production build was several megabytes of JavaScript in a single file — and every deplo…
Font Subsetting for Web Performance: 4 Tools to Reduce Font File Size and Improve LCP
In web development, every millisecond on the critical path matters. Typography is part of your visual identity, yet a single self-hosted family can ad…
From Reactive to Proactive: How Smart Alerts Change Performance Monitoring
An account manager forwarded us a Search Console screenshot at 4:47 p.m. on a Friday. LCP on the homepage had been in the red for eleven days. Enginee…
INP in production: what we wish we had measured earlier
We spent years teaching clients to watch Largest Contentful Paint. Hero images, preload tags, CDN moves: the story was easy to tell in a slide deck. W…