CSS option

As far as I can tell the CSS option is ignored. When set it gets added to the opts Object https://github.com/fraserxu/electron-pdf/blob/master/index.js#L70 which then later on is passed to win.printToPDF https://github.com/fraserxu/electron-pdf/blob/master/index.js#L108. webContents.printToPDF does not support the css option though. What it does support is webContents.insertCSS(css) https://github.com/atom/electron/blob/master/docs/api/web-contents.md#webcontentsinsertcsscss which should be used instead

[RamIdeas]

I got around this by dispatching a ‘view-ready’ event after the document.fonts.ready promise resolves

<script>
    document.fonts.ready.then( () => document.body.dispatchEvent(new Event('view-ready')) );
</script>

[codecounselor]

Closing, for any circumstances such as this, the waitForJSEvent should be leveraged as demonstrated by @RamIdeas