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D2R Inventory Image screenshot
Live

D2R Inventory Image

Auto-generated Diablo II item showcase images

Go Google Sheets API Grafana Cloud
Launch app

What it is

A fun side project for Diablo II: Resurrected. It reads a curated list of items from a Google Sheet and renders a clean, shareable “inventory” image — handy for showing off finds in trade communities.

How it’s built

A Go service pulls item data from the Google Sheets API, composites the item art and stats into a PNG on the fly, and serves it over HTTP. Operational metrics ship to Grafana Cloud.

Google Sheet
Go image service composites PNG
Browser / share
Sheet as the source of truth; metrics to Grafana
Go image service
Grafana Cloud metrics
Observability

Design decisions

  • Sheets as the database — non-technical edits to the item list need no deploy; the source of truth is a spreadsheet anyone can update.
  • On-the-fly image compositing in Go keeps the service stateless and the output always fresh.
  • Grafana metrics make a hobby service observable, just like a production one.

What I learned

Treating Google Sheets as a lightweight CMS is a surprisingly pragmatic pattern for small projects where the content owner isn’t a developer.