I'm Cooper Johnson — a developer and designer from Seattle. I make web apps, Minecraft tools served to thousands of players daily, and clean product work, designed and shipped end to end.
A free suite of Minecraft tools — skin & cape editors, addon and pack makers, profile lookups and more — used daily by thousands of players. Designed, built, and maintained entirely solo: the front end, the Cloudflare backend, SEO, and ad partnerships.
Visit mc-tools.net
A workout & performance tracker for a youth athletic-training gym. Athlete and coach modes, per-session and weekly strength graphs, streaks and PRs, and full session history — installable as a PWA so it lives on the home screen like a native app.
Private build — screenshots onlyI'm Cooper, a 17-year-old developer and designer based in Seattle, Washington. I run MC-Tools, a suite of free Minecraft utilities used by thousands of players every day, and I build web apps for businesses and teams.
I care about three things: fast, polished, and actually useful.
Got a project, a tool idea, or just want to talk shop? My inbox is always open.
xcoopofficial@gmail.com