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Practical guides on the tools developers use every day — JSON, regex, JWT, cron, and more.
2,830 posts · page 1 of 236
Lossy compression has a knee in the curve where file size keeps dropping and visible quality doesn't. Here's how to find it.
Learn how to diagnose and fix unexpected memory spikes in Node.js apps with heap snapshots and practical code examples.
Exported SVGs are full of editor cruft. Here's what optimizers remove safely, and the few things worth checking by hand.
Learn to profile and fix slow Next.js builds by measuring bundle sizes, optimizing images, and leveraging build caching.
You don't need 15 files anymore. Here's the realistic minimum set of favicon assets modern browsers and platforms expect.
Learn where AI coding agents still fail in real workflows, and how to work around their blind spots with concrete commands and configs.
A handful of nice colors isn't a system. Here's what a palette needs to survive a real UI with states, themes, and edge cases.
Learn to build an AI agent that writes failing tests before implementation, using a test-first loop with real code examples.
Learn to set up an AI code review agent that catches bugs, security issues, and style problems in every pull request, with real commands and config.
4.5:1, 3:1, 7:1 — the actual numbers behind WCAG contrast requirements, and why they differ by text size.
Learn to build a codebase-aware AI agent using embeddings, a vector store, and a retrieval loop with practical code examples.
Testing a class combination shouldn't require running a dev server. Here's a faster loop for trying Tailwind ideas.
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