More efficiently sized plots?

[tdealtry]

The current webpages are being made of ~20-30 MB per CI job x 35 jobs = 671 MB total (at time of writing). This seems quite big!

The largest part of each job is a load of .gifs that are 12-16 kB

It would be interesting to see if using a tool that can plot binary data, rather than images, would be more efficient for the webpage. Something like plotly can export graphs to html

A benefit of this is that you get an interactive graph, rather than a static image. Which is more useful for determining exactly how different things are