The Unglamorous Maintenance Work That Keeps a Site Indexed
Nobody writes launch posts about maintenance. But in our experience running a production site, the work that protects your search visibility is most…
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How we took CLS to 0.000 on a hand-built static site (no framework, no CDN)
Our production site is deliberately boring technology: hand-written HTML, one compiled CSS file per page, no framework, no build step, no CDN, share…
How to Choose Image Conversion or Compression in Python — Property Photos
Short answer: to choose between image conversion and compression, convert when a target device or browser needs a different format or shape; compres…
Compression Dictionaries: Ship Only the Diff When Your Bundle Changes
You ship a one-line bug fix. Your bundler dutifully produces app.8f3c1a.js , a brand new filename, and every returning visitor downloads the whole 2…
Our preload header downloads four files the page never uses, and one query parameter is why
CogniPrep's homepage shows a grid of company logos. The first four are above the fold, so next.config.mjs sends a preload hint in a response header,…
How I made my React portfolio 2x faster (Lighthouse 30 to 80) by prerendering a Vite app
My portfolio is a Vite + React single-page app with a cyberpunk terminal theme: matrix rain, a live terminal, mini-games, easter eggs. It looked gre…
INP and Partytown: give the main thread back to your users
Introduction You click on a button. Nothing happens. You click again. Still nothing. Then the menu opens... and closes right away. We have all lived…
We Thought We Had an Image Format Problem. We Actually Had a Workflow Problem.
While rebuilding the Daminion website, we started paying more attention to something fairly mundane: image files. Some pages contained old JPEGs. De…
Site-Wide Structured Data and Social Graph Integration
Choosing A Publishing Stack A Technical a mobile stack starts with constraints, not a popularity contest. When developing static-site platforms or c…
A Website Can Work Perfectly and Still Be Bad: Why Web Performance Matters
Imagine this. You find exactly what you're looking for on Google. You click the website. The browser starts loading. You wait. And wait. And wait so…
Charts.css vs ProvChart vs FSCSS (st-core): three ways to chart without a JS chart library
JavaScript chart libraries are powerful, and heavy. For many pages you only need a trend, a bar comparison, or a simple gauge. Shipping 40-150 KB of…
Next.js & AI Systems Architecture: Scaling Real-Time Agents (2026)
The Hidden Bottleneck in AI Engineering In the rapidly evolving landscape of 2026, building AI-native applications is no longer just about prompt en…
Core Web Vitals Benchmarks for Shopify Stores (2026 Data)
Shopify's own theme performance table still shows median pass rates in the 80–97% range for LCP, INP, CLS, and “all Core Web Vitals.” Open a multi-p…
How to monitor and maintain Laravel apps for multiple clients
Laravel agencies often run a clean ops story and a messy front-end story at the same time. Forge or Vapor shows green deployments, queues drain, and…
The Callback That Kept Rendering Data From Twenty Minutes Ago
A closure doesn't capture the one variable you meant to use; it captures a strong reference to its entire outer lexical environment. Left unmanaged,…
Lighthouse says 86. Run it again: 91. Building a free local console for scores you can defend
You know this loop. A page feels slow. You open the Lighthouse panel in DevTools, hit Analyze, and get 86 . You change nothing, run it again, and ge…
Fixing Delicate Cache Mismatches in a Brownfield SPA: A Pragmatic Solution
Building in public often means talking about shiny new features, but in mature production applications, the most critical engineering work is usuall…
iOS Safari can't decode your .mov, and the reason is 2 bytes deep in the container
Our tool transcribes audio in the browser — Whisper running locally via transformers.js , no upload. It worked fine, until analytics showed somethin…
When LCP Moves and Nobody Deployed: Browser Release Cadence and Your 28-Day Field Window
Field Largest Contentful Paint in PageSpeed Insights can move while your release calendar stays empty. Chrome User Experience Report (CrUX) data is…
Is PageSpeed Insights a good reference for web page structure/performance?
PageSpeed Insights (PSI) answers a narrow question well and a broad one poorly. It is a good reference for how a URL performs under a controlled lab…
Are websites still relevant today for the average person?
The average person does not wake up choosing between "website" and "no website." They choose between opening an app, asking ChatGPT, tapping a map r…
Adaptive PNG filtering made my animations 2.4x bigger
I added adaptive per-scanline filtering to an APNG encoder, because that is what you are supposed to do. PNG lets every row pick one of five filters…
A GIF re-encode made the file 4.5x bigger. Interframe differencing fixed it.
Cropping a GIF should not make it bigger. Ours did, and not by a little: a 288-frame Foucault pendulum went from 1074 KB in to 4881 KB out, and a 70…
INP Bukan Masalah Hosting: Cara Mengaudit dan Menjinakkan Script Pihak Ketiga di Situs Bisnis
Setiap kali skor Core Web Vitals memerah, percakapan di ruang rapat hampir selalu berbelok ke arah yang sama. Ganti hosting. Naikkan RAM. Pindah ke…
The End of useMemo: React Compiler in Next.js
The Exhausting Re-Render Crisis For the past decade, building highly interactive React applications has been a delicate balancing act. React’s core…
How We Optimized Next.js 15 for 70,000+ High-Res 4K Wallpapers (Without Melting the Edge)
When we set out to build Zenith Walls , we made a promise: we were going to serve pristine, uncompromised 4K and 8K wallpapers — crisp enough for ul…
TTFB Won't Go Down? Server-Side Culprits Beyond the Theme
You moved the site behind a CDN, trimmed the theme, deferred scripts, and ran a caching plugin. PageSpeed Insights still flags a high Time to First…
Stop Polling: Real-Time SSE Architecture in Next.js 📡
The Polling Anti-Pattern In modern enterprise applications, users expect real-time data. Whether it is a live trading dashboard, a server health mon…
What happens when you upload a PDF online
Disclosure: I build UMyPDF , a browser-based PDF toolkit, which comes up at the end of this post. The explanation applies to any tool built either w…
Your store weighs 1.7 MB and still takes 18 seconds: the number that matters is 364 requests
Page weight is the number everyone checks, and it is the reason this store has been slow for months without anyone finding out why. I measured a Sho…