Small tools

Small tools I wrote for myself and left here for anyone to use. Some run entirely in your browser; others are pages on this site.

DeepSeek API balance check Check your DeepSeek API account balance straight from the browser. The key stays in page memory, never passes through our server, and is not written to cookies or local storage. Open tool

Object storage cost calculator The cost calculator from the Guyun guide: drag storage and monthly data traffic to compare providers’ monthly cost on one chart — storage, egress, retrieval and request fees included. Open tool