Merge the top and bottom toolbar into one so that there is more useable space.
There are two toolbars unnecessarily. Top toolbar for browsing slides, searching for specific words, undo button and the add page button. Bottom toolbar for writing tools. Top one only uses up the left and right side (with the title taking up a huge amount of space in the middle) and the bottom toolbar only uses the middle so they would merge perfectly if you just moved the title elsewhere, thus giving us the users more space to write/draw on.