About onthu.com
onthu is a collection of small tools I built because I kept needing them and didn't want to deal with ad-heavy websites every time.
Need to check the weather? Generate a password? Calculate compound interest? These are things people do all the time, and most of the sites that offer them are bloated, slow, or trying to get you to sign up for something. I wanted something simple that just works.
What's on here
Right now onthu has:
- Weather — hourly and 3-day forecasts using Open-Meteo data
- Password Generator — creates passwords from your inputs so they're actually memorable
- GPS — find your coordinates and share a location link
- BMI Calculator — quick calculation with context on what the number means
- Lucky Wheel — random picker for decisions, giveaways, whatever
- Quotes — mood-based quote browser
- Bank Interest Calculator — see how compound interest affects your savings
- Age Calculator — exact age with some fun historical facts
- Focus Station — Pomodoro timer with a few different time modes
- Sleep Calculator — optimal bedtimes based on sleep cycles
- Image Compressor — shrink images without uploading them anywhere
- Photo Editor — basic editing with filters and adjustments
- QR Generator — make QR codes for URLs, WiFi, text, etc.
I also write a blog about random things I find interesting — mostly stuff about how brains work, common myths, and the occasional deep dive into something nobody asked about.
How it's built
Everything runs in your browser. No accounts, no server-side processing, no data collection. The weather tool calls an API for forecast data, and the GPS/map features use OpenStreetMap, but everything else happens locally on your device.
The site is a Progressive Web App, so it works on any device and you can install it if you want. It also follows your system's dark/light mode automatically.
Why "onthu"?
No deep meaning. I needed a short domain name and this one was available. The gecko emoji stuck because why not.
If you have questions or ideas, there's a contact page. If something's broken, I'd genuinely like to know.