Hope the default background color for PNG format is transparent.

[kohaiy]

const el = document.querySelector('#export-box');
const result = await snapdom(el, { scale: 2, backgroundColor: '#f0f', type: 'png' });

const img = await result.toBlob({type: 'png', backgroundColor: 'rgba(0,0,0,0)'});
console.log(URL.createObjectURL(img));

Hope the default background color for PNG format is transparent, and that options can inherit the snapdom method.

Looking at the code, the background color is set to #fff everywhere. If it's not passed in by default, it won't fill the background — but the default is probably white, right?

[tinchox5]

Actually, png is transparent as default unless you set another color. Pls check the demo gallery export case. The first export is a png and corners are transparent

[kohaiy]

I try to download from the demo website, but it is not transparent.

[tinchox5]

Oh I see the issue is when use .download(). Thank you for the clarification

[tinchox5]

Fixed. Will published in nest release

[kohaiy]

thx.