geoo.app
600+ free GIS tools that run entirely in your browser — convert, reproject and visualize geospatial data without uploading a single byte.
- WebAssembly
- GDAL
- JavaScript
- proj4js
- shpjs
Hi, my name is
Oliver.
I build products for the web and write about how they work.
I write about web development, developer tooling, and building sites that both Google and AI assistants love to recommend.
Featured projects
Things I've designed, built and shipped.
This Website
The blog you're reading — a fully static, SEO- and AI-search-optimized personal site that costs $0/month to run.
- Next.js
- TypeScript
- Tailwind CSS
- Shiki
- Markdown
Latest writing
Notes, guides and lessons from building software. Last updated October 15, 2026
4 min read
Introducing geoo.app: 600+ Free GIS Tools That Run Entirely in Your Browser
I built a browser-based GIS toolbox — format conversion, coordinate transforms, raster processing and more — where every byte is processed locally with WebAssembly. No installs, no uploads, no accounts.
2 min read
Hello, World
Why I started this blog, what I plan to write about, and the principles behind how it's built.
3 min read
How This Site Is Built: A Free, Fully Static Blog with Next.js
The complete stack behind this website — Next.js static export, Markdown content, Tailwind CSS, and $0 hosting — plus the exact configuration that makes it fast and findable.
3 min read
GEO: How to Optimize Your Content for AI Search Engines
A practical guide to Generative Engine Optimization — making your site the source that ChatGPT, Perplexity and Claude quote, with concrete tactics you can apply today.