Your images are pretty huge right now, and this is the biggest easy win in terms of page weight. You can resize them all so that you aren't serving unnecessarily large dimensions (e.g the bulb png is 940px tall, but is never displayed larger than 256px). You can then run the files through ImageOptim to massively reduce the file size.
I just exported blank-bulb.png with Photoshop's Save-For-Web at 256px, then ran it through ImageOptim and it went from 90kb to 6kb 🎉
Your images are pretty huge right now, and this is the biggest easy win in terms of page weight. You can resize them all so that you aren't serving unnecessarily large dimensions (e.g the bulb png is 940px tall, but is never displayed larger than 256px). You can then run the files through ImageOptim to massively reduce the file size.
I just exported
blank-bulb.pngwith Photoshop's Save-For-Web at 256px, then ran it through ImageOptim and it went from 90kb to 6kb 🎉