base64 font imported from js string.

[Tolomaj]

Is possible to embed custom font encoded in base64 stored in js string like ''data:font/ttf;base64,8JCAgPS..." ?

I develop html page that loads from local html file and need export pdf files. Unfortunetly i need to use special characters like 'ůúřčž' and other, thats not possible with default fonts. When i try to load font from file i got Cross-Origin errors.
Becouse i resolved this problem before for images (using base64 encoded strings) iam curious if this is posible for font also?

This code resolves into Unknown font format error and i dont know what can i try next.

const fontBytes = ''data:font/ttf;base64,8JCAgPS...";
const font = await pdfDoc.embedFont(fontBytes);