meteohub.de

Hi,

Is their a way to reduce the filesize of Lastchart.html, mine currently is 656,594 and slows the page loading down.

Cheers

Lastchart is whatever chart you generated last. Therefore, I don't understand your question.
You are free to define less complex charts yourself (metacharts) or to reduce time resolution, which will have the most impact because all data points are also in the html. By that the html is selfsufficient and can be uploaded and viewed anywhere.