Sparkline Generator
sparklines.bitworking.info/#generator
From the page
Saved with the link. Notes from 2007 to 2016 are mostly the page's own words, so this is probably an excerpt.
Welcome to the sparkline generator. You can start right away by dynamically creating a sparkline using the Sparkline Generator Web Application, or you can read more about sparklines and decide if you want to use the sparkline web service or if you would be better off downloading the code and running the sparkline service on your own server.