I build whatever I’m curious about to see how it works, then write down what happened.https://screenager.dev/https://screenager.dev/blog/a-typeface-from-one-letter/https://screenager.dev/blog/a-typeface-from-one-letter/A tiny model, trained on 2,806 open-source typefaces, that draws a whole alphabet from one letter, right here on your CPU. The first version lost to a lookup table. The second reads your letter, checks its own work, and says how sure it is.Wed, 07 Oct 2026 00:00:00 GMThttps://screenager.dev/blog/everything-falls-into-step/https://screenager.dev/blog/everything-falls-into-step/Clapping crowds, two clocks on a wall, a riverbank of fireflies, a bridge in London and a rack of routers all do the same strange thing without being told. Nature wants it. Computers really don’t.Sun, 04 Oct 2026 00:00:00 GMThttps://screenager.dev/blog/why-you-cant-zip-a-zip/https://screenager.dev/blog/why-you-cant-zip-a-zip/I zipped a folder, it got seven times smaller, so I zipped it again. It got bigger. A tour of how compression actually works, from Morse code to the pigeonhole principle.Sun, 04 Oct 2026 00:00:00 GMThttps://screenager.dev/blog/anatomy-of-a-page/https://screenager.dev/blog/anatomy-of-a-page/A dissection of the page you’re reading, top to bottom: the night above it, the grid under it, the type, the code, the maths, the figures, and every small thing a post here can do.Thu, 01 Oct 2026 00:00:00 GMThttps://screenager.dev/blog/what-actually-happens-when-you-press-ctrl-c/https://screenager.dev/blog/what-actually-happens-when-you-press-ctrl-c/You know that moment when magic becomes real? This is about that moment: the kernel subsystem that turns two keys into a signal.Sun, 19 Oct 2025 00:00:00 GMThttps://screenager.dev/blog/why-ping-is-a-masterpiece-of-network-diagnostics/https://screenager.dev/blog/why-ping-is-a-masterpiece-of-network-diagnostics/The most powerful network diagnostic tool you’ll ever use is 1,000 lines of code written in a single evening in 1983.Fri, 17 Oct 2025 00:00:00 GMThttps://screenager.dev/blog/diff-algorithm-hunt-mcilroy/https://screenager.dev/blog/diff-algorithm-hunt-mcilroy/Every CS student grinds LCS problems on LeetCode. But do they know it powers git diff? A deep dive into the Hunt–McIlroy algorithm and why your DSA practice is more relevant than Twitter debates suggest.Thu, 09 Oct 2025 00:00:00 GMThttps://screenager.dev/blog/l3-cache/https://screenager.dev/blog/l3-cache/A practical guide to CPU caches, sparked by a slow laptop. How simple changes to your loops and data structures can dramatically speed up your code.Fri, 26 Sep 2025 00:00:00 GMT