brennycabinets

I am trying to use this on a website though... png isn't a supported web format is it? I've made images like this before with different software to use on the web....

I am trying to make images with transparent backgrounds to work on websites with colored backgrounds. Can anyone help me? Thank you

I am trying to submit a logo for print that I made on paint.net software. The printer says the resolution is too low and I need at least 300dpi. Can someone tell me how to change the image or tell me how to create a new one that is better quality? I need to create this today if possible... please any help would be great!