When QWebEngineView is used to load a local PDF file via URL. When displaying the PDF, the scaling behaves differently —especially when the document contains a mix of portrait and landscape pages.

Even after clicking "Fit to Page" or "Fit to Width", the content does not adapt properly to the all available window size.

If pdf file is viewed in Firefox it fits the entire width. But with QtWebeneinge and with google chrome this still leaves left and right side empty.

It would be nice if we can make it fit to entire width as firefox does.