GitHub contribution card (PNG)

  https://heatmap.cloudflare-experiments.com/<github-username>
  https://heatmap.cloudflare-experiments.com/<github-username>?mode=3d&blocks=skyline&stats=cards

theme=dark|light   palette=golden|github   colors=hex,hex,..   empty=hex   bg=hex|none
mode=2d|3d   shape=rounded|square|circle|diamond|hexagon|plus|bar|ring   blocks=skyline|lego|blocks|cylinders|bars
stats=inline|row|cards|none   font=sans|mono|pixel   tint=1|0   year=2025
header=1|0   months=1|0   weekdays=1|0   legend=1|0   counts=1|0   picker=1|0
scale=1..3   cache=300..86400 (default 86400)   format=png|html