[Comfy.n]

A more hackish approach would be to run Calibre from source using an edited book_details.py (full path is C:\somefolder\calibre-master\src\calibre\gui2\book_details.py)

I was able to reduce the tooltip to an empty rectangle using this:

def update_tooltip(self, current_path):
        try:
            sz = self.pixmap.size()
        except:
            sz = QSize(0, 0)
        self.setToolTip(
            '<p>'+_('') 
        )

    # }}}

instead of:

def update_tooltip(self, current_path):
        try:
            sz = self.pixmap.size()
        except:
            sz = QSize(0, 0)
        self.setToolTip(
            '<p>'+_('Double click to open the Book details window') +
            '<br><br>' + _('Path') + ': ' + current_path +
            '<br><br>' + _('Cover size: %(width)d x %(height)d pixels')%dict(
                width=sz.width(), height=sz.height())
        )

    # }}}

https://manual.calibre-ebook.com/dev...nt-environment

https://github.com/kovidgoyal/calibr...ads/master.zip