About
techgeek.biz is a free toolbox and learning hub for people who like to tinker — developers, sysadmins, homelabbers and hobbyists. It started as my IT support business for residential and small business customers in South Australia. After I moved interstate and lost those customers, I turned the site into tech tips and code for fun and to help the community — and that's still what it is.
What you'll find here
- Free online tools — 50+ browser-based utilities: QR Code Maker, Password Generator with an entropy calculator, JSON/JavaScript/XML formatters, Regex Tester and a ready-made regex library, DNS lookup and propagation comparison, IP address & subnet calculator, Base64 / URL / HTML-entity converters, Hash Generator, cURL to Code Converter, Favicon Generator, Image Upscaler and more. The tools run 100% in your browser — nothing you type is ever sent to a server.
- Tech Tips — 60+ hands-on how-to guides written from real projects: Raspberry Pi (including pi-auto, a low-cost device that reads vehicle computer and GPS data), PowerShell, Ubuntu, Django, home-server networking with OPNsense and Graylog logging.
- Linux in Browser Beta — boot a real Debian 12 or Ubuntu 24.04 system entirely in your browser with v86: a full working terminal (vim, git, curl, python3), adjustable RAM and save/restore of your VM state between visits.
Who it's for
If you're the person who reads the man page before asking a colleague, keeps a Raspberry Pi in a drawer “for later”, or wants to know exactly what a tool does with your data — this is your site. Everything here is free and no sign-up is required.
Contact
Email. Get in touch
Luke Keam
Founder/Developer of:
| Website | Description |
|---|---|
| quick-time-management.com | Productivity site for desktop users: take time back, achieve your goals, faster and easier. |
| hash-check.com | Third party cryptographic hash storage. For users: Check file integrity from any download source. For Companies: Receive notifications for file alterations in the wild. |
| auto-allocator.com | Prototype of a Transport Planning Management site that automates planning and scheduling. |
| pi-auto | pi-auto: A low-cost Raspberry Pi device that utilizes vehicle computer and GPS data. |
| fleet-track.org | GPS tracking website: Provides real-time tracking, historical data, and reports for vehicles. |
| techgeek.biz | Nerdy things and how-to guides: learn, code, contribute and make money. |
| brisklearn | Software for Training Manager to send out training notifications. |
| average-athlete.com | Cycling races, training rides, commentary and analysis. |
| LukeKeam on GitHub | GitHub Profile. |
| Luke Keam on LinkedIn | LinkedIn Profile. |
Located in Queensland, Australia
