Good job! I may myself use this. Here's some feedback:
- Add night mode.
- Add prices prior to 2013. (2009-2012)
- Add historical data for each month.
- Add lightning donations!
I added "Night/Dark mode" and a chart with historical data.
The website contains a Bitcoin donation address that is visible on the API and Privacy statement page in the footer.
I have taken a look at "lightning donations" and learned something about "Bitcoin lightning transactions"

For now I do not want to implement lightning donations however it is something that I am gonna checkout, interesting technique.
Historical prices prior to 2013 is something that I need to checkout, I would need to find the data somewhere
