Torstein Hønsi

Okay, I think we're drifting away from the OP issue here and over into general tech support. Can you post your question on the forum or on Stack Overflow? The...

@ericdevries Did you consider adding AVIF support? I tried but failed. Would be great to get help with that. See #30.

Currently we don't have an option for that (with the online export we have [this hack](http://jsfiddle.net/highcharts/gd7bB/)), but we should be able to do it with a little modification. We just...

@ChartHaven, @A-- Yes, the official [export-csv](https://github.com/highcharts/export-csv/blob/master/export-csv.js) plugin does offline export of XLS and CSV. It falls back to online export for non-supportive browsers.

Here's a dropin fix that enabled area fills for area series in legend: http://jsfiddle.net/AH7PL/

You can adjust that in the code of the drop-in fix

I think this belongs in the API

@oysteinmoseng Any insight?

Looks good to me! Asking a review from @oysteinmoseng too, to be on the safe side.

Fix applied to the OP demo: https://jsfiddle.net/highcharts/90hrap8x/ One think still failing is when there are null points in the second series (June).