Typst is a huge improvement over LaTeX, but makes the rather anachronistic decision to target paper-based media instead of screens. Unless you're planning to print out all your papers onto physical paper, and you have stacks of different sized paper lying around (A4, US Letter, US Legal, etc.), PDFs are kind of old-fashioned. Why constrain your document's width to eight and half twelfths of the length of some medieval king's foot, when we have cutting-edge 1980s technology like HTML which can adapt to your screen width?
Incidentally, there's an open issue with Typst for making HTML output, but I don't understand why that wasn't the project's first priority. Even if scientific journals require PDF uploads, you can still get those from printing HTML. The opposite isn't true at all.
Incidentally, there's an open issue with Typst for making HTML output, but I don't understand why that wasn't the project's first priority. Even if scientific journals require PDF uploads, you can still get those from printing HTML. The opposite isn't true at all.