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Add JSON-LD structured data to an Astro or Docusaurus site
Originally published on headlark.com. Structured data tells search engines what a page is: an artic…
I built 59 free browser-based dev tools in vanilla JS — here's what I learned
I've been quietly building Antigravity Tools — a collection of 59 free, browser-based developer util…
Nothing to pair: show things on a TV without Bluetooth
Walk up to a screen, and a few seconds later it is showing what you chose. No settings menu, no list…
Hex to Decimal: Free Online Hexadecimal to Decimal Converter — How-To Guide
Hex to Decimal: Free Online Hexadecimal to Decimal Converter — How-To Guide What the Tool…
I Built a Free Tool That Copies Any CV Style You Like (From Just an Image)
You know that feeling: you see a CV design you love — a clean sidebar, a nice colour, a layout that …
How to Generate Beautiful Code Screenshots 100% Client-Side (No Server Uploads, Zero Telemetry)
If you've ever shared code snippets on Twitter/X, LinkedIn, tech blogs, or team documentation, you'v…
Cloudflare Workers caching: store values, not in-flight promises
A module-level cache can reuse completed data across requests in a Cloudflare Worker. Sharing a pend…
Representing a 2048 Board in JavaScript (and Why Flat Arrays Win)
Tile-merge games look simple on screen and get messy in code the moment you handle "slide left" four…
Medium Kept Throwing Cloudflare Bot Walls at My Publishing Bot — What Actually Worked
I spent last night publishing five articles to Medium from a headless-ish VM browser. It should have…
How I Keep 50 States of DMV Fee Data Accurate Without Going Insane
Here's a fun problem. You ship a free tool. People actually use it. And the data behind it can chang…
What Should You Write Next? Compare These 7 Keyword Research Tools
A keyword tool can give you 500 ideas and still leave you with the same question: what should you ac…
Claude Code File System Boundaries in 2026: What `--add-dir`, Allowed Paths, and Sandbox Roots Actually Restrict
Claude Code File System Boundaries in 2026: What --add-dir, Allowed Paths, and Sandbox Roots Actuall…