About Lightning Jar

Blog

Cold Email Is Spam

Give the Model a Tool, Not a Rule

Svelte $effect Overuse: The React Reflex

From Google Analytics to Plausible

The Error Message Didn't Matter | barkup-bench Study AJ

It Asked About Things It Already Knew | barkup-bench Study AG

The Twenty-First Note | barkup-bench Study AH

Repeating the Goal Doesn't Make It Yours | barkup-bench Study AF

Only the Frontier Knows When to Ask | barkup-bench Study AE

The Frontier Doesn't Need the Training Wheels | barkup-bench Study AD

The Model Always Knew What It Couldn't See | barkup-bench Study AC

The Arcade Game With No Game Loop | Donut Shooter

Stronger LLMs Follow Conflicting Instructions More Literally | barkup-bench Study Z

The Number That Doesn't Fit in a Number | Numberoo

Undo That | barkup-bench Study X

Hand It Everything It Needs | The barkup-bench Capstone at 23 Studies

The Browser Is an Instrument | Web Audio API Synth

F♯ Is Not G♭ | Music Theory as a Data-Modeling Problem

Who Writes the Memo? | barkup-bench Study W

Views Carry Values, Memos Carry Goals | barkup-bench Study V

The Two Things Your Agent Can't See | barkup-bench Studies T and U

The Thirty-Sixth Edit | barkup-bench Study S

barkup 0.5 | Deterministic Selection

Your Agent Doesn't Need a Memory | barkup-bench Studies P and Q

barkup 0.4 | Content Search

Then We Found the Cheap Part: One Search Call Grounds LLM Tree Edits

barkdown: a Markdown to DOM Round-Trip Codec | Lightning Jar Engineering

The Benchmark Said No | barkup-bench Studies L and M

Stable IDs Are All You Need | barkup-bench

barkup 0.3 | Focused Views

Session Drift in LLM Agents | barkup-bench Study K

The Model Doesn't Need to See Your Tree | barkup-bench

We Found the Crossover | barkup-bench at 1000 Nodes

Deprecated Accessor Broke My Benchmark | Tool-History Footgun

barkup 0.2 | Id-Anchored Patches

We Benchmarked It | HTML vs JSON for LLMs

Content Is an Overlay | Words vs. Structure

Documents as Web Code | Origin of Replicator

25 Years of Lightning Jar | A Digital Agency Since 2001

HTML as a Native Data Format for LLMs | AST-as-HTML

Utility CSS for LLM-Generated Markup | Lightning Jar Engineering

Pimcore to OpenDXP on Rootless Podman | Migration

Pimcore Fork | OpenDXP

Anatomy of a WordPress Compromise | Abandoned Plugins

Why Links Should Rarely Open in a New Tab

Open Source vs Proprietary for B2B: Why Freedom Wins

SvelteKit vs WordPress for B2B: Security, Speed, Cost

Questions, Decisions & Compromises

Why We Don't Sell Ads

SEO Is Changing

Leaving Wordpress

Project Management Software Trap

Built With

Customer Stories

The Evolution of Replicator | Customer Story

Ten Years and One Unified Stack for SecureLogix | Customer Story

14 Languages in Days, Not Quarters: CCRTA Sitewide Translation | Customer Story

Selling Seats, Not SKUs, for PetroSkills | Customer Story

Leaving WordPress Behind for CCRTA | Customer Story

Five Years and One Brand System for Sage Energy Holdings | Customer Story

A Modern Design System for TransTrack's Transit Software | Customer Story

In-Store Digital Experience for Northgate González Market | Customer Story

A Decade as Zenith Energy's Digital Partner | Customer Story

Launching Hark for MediaScience | Customer Story

Finding Baloo's Brand | Customer Story

A Bold, Real Voice for Rigby Home | Customer Story

A Rebel Brand for Blue Duck Scooters | Customer Story

A Modern Digital Presence for Zenith Capital Partners | Customer Story

Pimcore Data Management for Cappex & EAB | Customer Story

Architecting BlueLine Rental's Digital Ecosystem | Customer Story

Pimcore PIM for Green Sprouts and O2C Brands | Customer Story

Digital Agency of Record for Avaya | Customer Story

The Perfect Cocktail for Marketing Data | Customer Story

Launching Space Racers on Pimcore | Customer Story

Pioneering Digital for United Rentals | Customer Story

Fun

Lightning Jar

Reading List

We got addicted to an AI model we can't talk about

Sarah Guo's Wager

Rewriting Bun in Rust

Agent swarms and the new model economics

Who's Afraid of Chinese Models?

Infinities, impossibilities, and the man in the white linen suit

Overtraining as the Path to Human-like AI

The Tokenpocalypse Is Here

Bosses Are Becoming Obsessed With AI

Thinking More About Netscape Time

The Hidden Cost of Taking Yourself Too Seriously

Why We're Choosing Stewardship Over an Exit

Ad Infinitum

Why Federated Design Systems Keep Failing

The Pre-Training Wall and the Treadmill After It — CoRecursive #121

How NASA Built Artemis II's Fault-Tolerant Computer

Does Code Cleanliness Affect Coding Agents? A Controlled Minimal-Pair Study

How I use LLMs as a staff engineer in 2026

Evolved antennas, LLM-generated code, and a potential antifuture

TanHacked — Syntax #1004

Hyperblam: Make Music With HTML

The House Is Valuable Because It Is the House

Yankee Candles Levels of Abstraction

You Deserve a Tech Union

How to win at CORS

You Can't Design Software You Don't Work On

Phantom Obligation

On Affordances

Mental Models

Deep dive into Turso, the "SQLite rewrite in Rust"

Sixty years of learning the same lesson

Waiting for dawn in search: Search index, Google rulings and impact on Kagi

Some Thoughts on the Open Web

Research

barkup-bench

The Builder's Playbook

Services

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Robots.txt

Technologies

Terms

Testimonials