Could you please improve the UX of your PDF reader? For it to be on par with the browser experience (like Chrome, Brave, Edge, etc.), it should at least feature:
Scrolling with the hand tool, so it’s easy to scroll or navigate by dragging the page.
Scrolling with middle-mouse click, which should show the floating scrolling widget.
Full-screen mode.
A page-by-page scrolling mode, rather than only continuous.
These features are standard and relatively simple to implement (they exist even in open-source PDF viewers) and would make your product more useful and enjoyable for everyone.
Hand tool: this functionality is already available in the PDF Editor. Please update to the latest version of ONLYOFFICE and check the Hand tool on the top toolbar.
Middle-mouse-button autoscroll: this improvement, including the floating autoscroll widget, has already been registered in our internal tracker.
Page-by-page viewing mode: the request for a Single Page View mode as an alternative to continuous scrolling has also been registered.
Full-screen mode: the request to add a full-screen PDF viewing mode has been registered as well.
At the moment, we cannot provide an ETA for implementing these improvements. We have added your feedback to the corresponding requests and will update this topic if there is any news.