Entrepreneur & Student
Hello I'm

Cooper
Johnson

Building tools 30,000 people use every day | Web tools, Products | USA πŸ‡ΊπŸ‡Έ

CJ
click me πŸ‘€
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Age
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Daily users
0
Products live
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UTR rating

Education

Still in it, building products between classes.

2023 to 2027 (expected)

High School

1470
SAT score, earned while running a 30k-user site on the side
Self-taught, always

School of Shipping Things

24/7
Everything below was learned by building it, breaking it, and fixing it

Short Profile

Entrepreneur building web tools 30,000 people use every day. Competitive tennis player: same discipline, different court.

What I build with

The tools behind the tools.

TypeScript
JavaScript
Node.js
HTML / CSS
Cloudflare
SQL / D1
Discord API
Analytics

The Inside Scoop

Currently heads-down growing mc-tools past 30k daily users and building out the Calloway tracker.

A small selection of recent projects

Live, maintained, and used daily.

Featured Β· Live

mc-tools.net

A suite of 15+ free Minecraft tools serving 30,000+ visitors every day: cape editor, skin editor, custom player heads, texture pack tools, and more.

  • 15+ tools, all free, all in the browser
  • 30k+ visitors a day and climbing
  • Built, deployed, and run solo: frontend, infra, analytics, community
Check Site β†’
mc-tools.net
mc-tools.net homepage, the Minecraft toolbox tool grid
mc-tools Cape Editor
mc-tools Custom Player Heads tool
In production Β· Private

Calloway Athletics Tracker

Full-stack roster, attendance, and performance tracker that coaches use daily to run a real athletics program.

  • Roster, attendance, and performance in one place
  • Real database backend, per-coach auth, automated nightly backups
  • Installable as a home-screen app, so coaches open it like any other app
πŸ”’ Private for the team, happy to demo
Calloway athletes roster with attendance status
Attendance
Calloway coach dashboard with team stats
Coach dashboard
Calloway athlete progress with streaks and strength chart
Progress tracking

My Experience

Titles are made up. The work is real.

01

Founder Β· mc-tools

Grew a side project into one of the most-visited tool sites in its niche. Own the whole thing: features, deploys, ads, analytics, and a Discord-powered bug pipeline.

02

Founder / Builder Β· Calloway

Designed and shipped a production team-management app with a real database backend, per-coach access, and automated nightly backups.

03

Community Operator

Run the Discord community and YouTube channel around my tools: support, bug triage, announcements, and shipping fixes users actually asked for.

04

Competitive Tennis Player

UTR 6.8 and climbing. Tournament schedules taught me more about deadlines than any textbook.

0.0
UTR

Off the keyboard: on the court

Universal Tennis Rating of 6.8, earned match by match in competitive play. Training most days of the week. The discipline carries straight back into shipping software.

My journey report

From first lines of code to 30,000 daily users. The short version:

2026

The year mc-tools got big: 30,000 daily users and still climbing. Also shipped the Calloway Athletics Tracker into production for a real team, all while juggling school, tournaments, and a 1470 SAT.

2025

The building phase. Launched mc-tools, kept adding tools, and set up the community around it: Discord, YouTube, and a proper bug-report pipeline. Traffic was still small, but real people were using my stuff.

Earlier

Playing Minecraft since I was 4, so building Minecraft tools was the obvious move. Learned to code the only way that sticks: wanting something to exist and building it. Broke a lot of things. Fixed most of them.

Let's Talk

Come hang out where the stuff I build actually lives: mc-tools, YouTube, or the Discord.