My logo is a black letter. In a dark browser tab it vanished. An SVG favicon can carry its own stylesheet and switch colour with the system theme. Tracing the PNG, the five files a Next.js app needs, and the fallbacks for the browsers that ignore all of it.
A reply from my own mail server to an msn.com address bounced with a block-list code. SPF, DKIM and DMARC were all fine. The block was on my hosting provider's network range, and the practical fix was to send that one mail another way. How to read the bounce, what does not help, and the detour through SES.
I made my database session read-only before a few careful queries on production. Through the connection pooler that setting stayed on the shared connection after I left, and the next request to land on it could not insert a row. What to use instead and how to find the poisoned connection.
A form, one table, two routes and one mail: that is the whole sign-up side of a newsletter. What each piece has to do, the SES settings that decide whether the confirmation arrives, the sentence I removed from the form, and the placeholder that cost me the first deployment.
A Worker on one of my domains stopped writing to its database while the site in front of it looked perfectly healthy. The zone was on Flexible SSL, the origin redirected to HTTPS, and the two sent each other in circles. One setting, one health line, done.
An hourly check that posts whenever something is wrong will post the same thing every hour until someone fixes it, and by day two nobody reads the channel. A fingerprint of the finding, a small state file and three rules turn the noise back into a signal.
A scheduled Claude Code job ran green for eleven days and produced nothing. The login had expired, the command printed one line saying so and returned success. Wrappers have to read the output, and headless machines need a token of their own.
The Google Nest Hub on my desk now runs my office lights and the docked Google Pixel Tablet in the bedroom shows a big clock with AC and hot water buttons. No Home Assistant and no app. The screens show a page from my own network through Google Cast, and taps go through to it. Below: how it works, the double tap, the page that would not reload, and why it all runs on an old Raspberry Pi.
I set the share image once in the root layout and assumed every page inherited it. Every page that defined its own Open Graph title had no image at all. Metadata in the App Router merges one level deep, and openGraph is replaced as a whole.
Search Console shows index coverage as a chart with a three-day delay and no export per URL. The URL Inspection API answers the same question for every address in your sitemap in about two minutes. The script, the quota, and what the answers told me after a site move.
Auto-renew only works while a card or a balance is behind it, and the registrar does not tell you when that stops being true. A small daily job reads every expiry date, sorts the domains into four buckets and only speaks up when something changed.
A font loaded from Google at page load sends the visitor's IP address to Google before anyone has consented to anything. Next.js can bundle the same font at build time, so the request never happens.
Five ways to get something built, run or sold. We start with a call, and at the end you own what we made.
Paid acquisition on Meta and Google for products and local businesses, run by someone who has bought media for years with his own money on the line. From the first ad to a running account, with the tracking that tells you what actually sold.
Services where a system does the daily work and a named senior checks it and signs off. Sold as a monthly service, and you can resell it under your own name to your clients.
The work that repeats in your business, handed to an AI assistant your team controls. Done with you, on your real tasks, until it runs without me.
Small tools, automations, AI products and MCP servers, built to run on their own and handed over with the code.
Clean cloud accounts on AWS, Google Cloud or Azure, costs you can see, and the startup credit applications written properly.
Products and tools I run myself, described at the surface.
An advertising system for private psychotherapy practices in Germany: Google search and Meta ads, a dedicated topic page and online booking, built to bring first conversations with self-paying clients.
A guide and a set of job files that teach remote workers to hand repetitive screen work to Claude, under their own supervision, on their own machine.
A book about the AI-first company, read in the browser, plus a marketplace of services each answered for by a named company.
A Google Ads system for local service businesses: copy-and-paste campaign templates, keyword and negative lists, written lessons, and a managed option for those who would rather hand it off.
