Front-End’s Missing Metric: The TBT Window
The TBT Window is the FCP-to-TTI interval used to calculate synthetic Total Blocking Time. If FCP or TTI moves, TBT can change even when long tasks do not.
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Challenge and opportunity
I am back! Ten days “offline”. For me that just means online without talking to anyone. My break came at a time of high industry (and personal) stress. “Seeing talented people lose motivation bums me the hell out. Reach out and say thanks - Kevin Powell”Thank you to those who reached out whilst I […]
Joining the atmosphere
I don’t post to or visit the social network formerly known as Twitter, but as a very early Twitter user, I can’t quite bring myself to delete all my old posts. There’s so much history there, not just personal history but the stories of a lot of the work I’ve done. This is the problem […]
Pixels of the Week – May 31, 2026
This week's newsletter focuses on my project definition framework, an interesting essay on being both engineer and artist in the AI era and some Claude Design limits for design systems. Also don't miss 2 beautiful technical dataviz, and a very important potato quiz.
June Is For Exploring (2026 Wallpapers Edition)
Let’s kick off June — and the beginning of summer — with some fresh inspiration! Artists and designers from across the globe once again tickled their creativity to welcome the new month with a new collection of desktop wallpapers. Enjoy!
Why the accept attribute degrades file upload UX
Last week I posted about why the accept attribute on file inputs is bad UX. The accept attribute lets you specify which file types an input will accept. For example, if users need to upload a receipt, you can do this: <input type="file" accept="image/jpeg,image/png,application/pdf"> That means users can only select tho…
Back from maternity leave
Today is my last day of maternity leave. Chloe is down for her morning nap and I'm trying to process the last 5 months and where it has all gone and all these complicated feelings. I want to go back to work and I don't. I am only going back part-time for a few months but it still feels like a massive shift is about to…
On the Twisted Logic of Labeling Criticism of Israel as “Anti-Semitism”
When defending human rights is framed as prejudice, the public conscience is backed into a corner.
Which DeepSeek Model Fits Your Hardware? VRAM Sizing Guide for 2026
Comprehensive guide covering this topic with practical implementation details. Continue reading Which DeepSeek Model Fits Your Hardware? VRAM Sizing Guide for 2026 on SitePoint.
How to Route DeepSeek-V4 Through Claude Code for Local Agentic Coding
Comprehensive guide covering this topic with practical implementation details. Continue reading How to Route DeepSeek-V4 Through Claude Code for Local Agentic Coding on SitePoint.
Claude Code Plan Mode: The Read-First Workflow for Complex Refactors
Comprehensive guide covering this topic with practical implementation details. Continue reading Claude Code Plan Mode: The Read-First Workflow for Complex Refactors on SitePoint.
The Future of Emotional Technology: Comfort Websites for Growth and Self-Awareness
Personalized digital spaces designed with care and emotional intention may offer a new way to support self-awareness, emotional growth, and the processing of difficult experiences in an increasingly AI-driven world.
Payment Orchestration Platforms in 2026: The Developer’s Guide to a More Flexible Payment Stack
Compare the top payment orchestration platforms in 2026. Reviews Akurateco, Spreedly, Primer, Gr4vy, Yuno, and more for merchants, PSPs, fintechs, and developers. Continue reading Payment Orchestration Platforms in 2026: The Developer’s Guide to a More Flexible Payment Stack on SitePoint.
How I Architected an Automated Programmatic SEO Auditor Using Node.js and LLM Function Calling
null Continue reading How I Architected an Automated Programmatic SEO Auditor Using Node.js and LLM Function Calling on SitePoint.
AI Is Not Your Accessibility Expert: What LLMs Still Miss About WCAG
null Continue reading AI Is Not Your Accessibility Expert: What LLMs Still Miss About WCAG on SitePoint.
How to Get Research Recommendations on the Roadmap
To influence the roadmap: join planning early, learn constraints, tie research to PM metrics, and give clear recommendations at the right time.
Using RAS to Guide UX Research Resource Allocation and Strategy
RAS helps managers allocate resources based on actual impact, shifting focus from outputs to outcomes and enabling data-driven UX strategies.
How to redirect if a page doesn't exist with Apache
Over a decade ago, I decided I wanted my article URLs to live at my site’s root path / instead of a subpath (like /blog or /articles) “for SEO purposes.” That made sense when I had a few dozen articles and hosted with WordPress. Today, I have nearly 3,000 articles generated as a flat HTML files with H…
Choosing LLM inference optimization techniques
A decision framework Continue reading on Level Up Coding »
The Game of Variable Possession
LEGB and SCOPE Continue reading on Level Up Coding »
0.4ms Latency: What Our AI Pipeline Was Really Paying For
A production postmortem on architectural debt, invisible overhead, and the cost of normalized slowness. Continue reading on Level Up Coding »
I Built a RAG Pipeline That Kept Lying to Users. Here’s What Fixed It.
Three weeks after shipping a knowledge-base chatbot for an internal project, I noticed a serious retrieval issue during testing. The bot… Continue reading on Level Up Coding »
Adding Paged Attention to Andrej Karpathy’s NanoGPT (2026 edition)
How Two Machines That Have Never Met Agree on a Secret: TLS and the Protocol Behind Every Secure…
Why AI Hallucinations Won’t Go Away? And What We Should Do Instead?
Why teaching AI to say “I’m not sure” matters more than teaching it to never be wrong Continue reading on Level Up Coding »
Stop Wasting Time Expanding Objects in Visual Studio
How a Single Line of C# Can Save You Hours of Debugging Continue reading on Level Up Coding »
Zero-Downtime Database Changes: The Multi-Deploy Strategy for Django
The migration works. But can it run while your app is serving traffic? Continue reading on Level Up Coding »
AI Token Economics and Enterprise Resource Management
LLMs use tokens to process data and determine pricing as corporate demand for artificial intelligence capabilities reaches record levels. Continue reading on Level Up Coding »
Reading List 359
This reading list is courtesy of Vivaldi browser, who pay me decent money to fight for a better web and don’t moan at me for reading all this stuff. We’ve just released Vivaldi 8 for desktop, with our biggest UI overhaul to date, and Vivaldi 8 for Android and iThings. All are free from Big […]
What’s !important #12: Safari Testing, ::checkmark, HTML Anchor Positioning, and More
The old (testing in Safari when you don’t have Safari), the new (::checkmark), the in-between (anchor positioning but with HTML), and more. What’s !important #12: Safari Testing, ::checkmark, HTML Anchor Positioning, and More originally handwritten and published with love on CSS-Tricks. You should really get the newsle…
The Fundamentals and Dev Experience of CSS @function
There are quite a few "gotchas," developers face when getting into the new @function syntax of CSS. Some are getting addressed!
The Index: Issue #184
musiq Some web components that render piano keys and guitar fretboards in various configurations. Handy for educators! Aphera This is looking like a genuine challenger for Adobe Lightroom. Media queries range syntax A very concise explainer on this ever-useful syntax by one of the best in the biz at explaining CSS synt…
New to the web platform in May
Discover some of the interesting features that have landed in stable and beta web browsers during May 2026.
Starting in the Analog domain
I find myself writing more orchestral music, it's tough, requires more concentration than programing (skill issue?) and is sooo time consuming. I also write code (duh!). And I also write books (not so much recently but still) One thing in common I notice lately is that the sooner you start to "commit" things in the […]
How Diamonds are Made?
A short, clear, engaging website that explains how diamonds are made by Jaydip Sanghani. Several facts in there I just didn’t know at all until now, like how many diamonds have a tiny serial number carved onto them. I think it’s nice to showcase websites that do things that websites really do best. I’d maybe […]
Coding Curriculum for Educators: How to Choose a Coding Course Subscription in 2026
For teachers and school curriculum leaders navigating a crowded field of coding platforms, this guide gives you a practical, five-step framework for making the right call. Coding education has never been more important—or more overwhelming to navigate. In 2026, hundreds... The post Coding Curriculum for Educators: How…
DeepSeek R2: What Developers Need to Know Before August
Comprehensive guide covering this topic with practical implementation details. Continue reading DeepSeek R2: What Developers Need to Know Before August on SitePoint.
Automating Code Review with DeepSeek in GitHub Actions
Comprehensive guide covering this topic with practical implementation details. Continue reading Automating Code Review with DeepSeek in GitHub Actions on SitePoint.
DeepSeek API + OpenAI SDK: A Developer's Quick-Start Guide
Comprehensive guide covering this topic with practical implementation details. Continue reading DeepSeek API + OpenAI SDK: A Developer's Quick-Start Guide on SitePoint.
Local LLMs Are Getting Easier: The Complete Guide (2026)
Weekly roundup of the most useful local-model improvements, with a focus on setup friction and developer value Continue reading Local LLMs Are Getting Easier: The Complete Guide (2026) on SitePoint.
Local LLM Deployment: Ollama vs vLLM vs LM Studio Compared
Comprehensive guide covering this topic with practical implementation details. Continue reading Local LLM Deployment: Ollama vs vLLM vs LM Studio Compared on SitePoint.
Understanding Frontend Builds
The Invisible Machinery of the Web: Why Do We Need Frontend Build Tools? Continue reading on Level Up Coding »
I Tried Caveman, Hit a Wall, and Ended Up Sending a Pull Request to a 65k-Star Repo
Honest analysis of an AI token-saving skill — what worked, what broke, and the moment my AI refused to lie for me. Continue reading on Level Up Coding »
I Stopped Writing Prompts and My AI Output Got 10x Better with Claude AI Skills
Most developers treat AI like a chatbot. I found something that works way better. Continue reading on Level Up Coding »
I’m Coding From My Bed Now — And My Team Has No Idea ️
How one new feature turned my phone into a full-blown development machine Continue reading on Level Up Coding »
How I Set Up OpenClaw on My Mac Mini M4 — My 24/7 AI Assistant That Costs Less Than a Coffee for 1…
Everything I learned after weeks of tuning, debugging, and optimizing an open-source AI gateway with 9 models from 8 providers. Continue reading on Level Up Coding »
Stop Calling Yourself a Junior Developer. Seriously.
The label is holding you back more than your lack of experience ever will. Continue reading on Level Up Coding »
I Wasted 10 Hours a Week on AI Context — Until I Found This $0 Fix
How a 2-command open-source tool cut my “AI amnesia” problem by 90% and saved me 50,000+ tokens per week Continue reading on Level Up Coding »
Even the Father of Tesla Autopilot
Feels Behind in AI — Here’s Why That Should Wake You Up Continue reading on Level Up Coding »
Swift/iOS: A Better(?) Way to Make A Dictation App