Solving niche problems
Quick format vs. Full format. Why 'deleting' a file doesn't actually remove it, and why SSDs are different from hard drives.
Is 0 the same as nothing? A guide to NULL, pointers, and why the 'Million Dollar Mistake' is probably in your code right now.
Why is every packet on the internet 1500 bytes long? A look at Maximum Transmission Units and why your fiber connection still uses 1980s limits.
Why is it always 256? Why do ports stop at 65535? A look at the 'magic' numbers that define our digital world.
Why do computers think the world began on January 1st, 1970? A guide to Unix timestamps and the 'Year 2038' problem.
86 utilities for encoding, hashing, parsing, and converting — all run client-side, no account needed.
Things we've built and shipped over the years.
Missing batteries for your Cloudflare stack. Build, monitor, and scale your infrastructure without the enterprise contract.
Active useheadstart.appStreamlines the boring parts of your day. Brings all your favourite sites and tools into one place with shortcuts, so you can focus on building in your browser with a single extension.
Active bestwebextension.comWell-crafted, beautifully-designed browser extensions. Open source. Works across Chrome, Firefox, Brave, Opera, and Arc.
Active js.kibibyte.inA JavaScript REPL with CDN-loaded NPM support, powered by esbuild-wasm. No install, just code.
Screenshot organizer that finds your screenshots by searching the text and content inside them.
ArchivedSearch domain availability without getting tracked or frontrun by registrars.
ArchivedAn easy-to-use modular state management library for Dart.
ArchivedBypass Google Drive's exceeded quota limit. Share files that actually open.