ScrollByPage

Adjusts the scroll position by the number of pages specified by the argument. Negative values scroll upwards, while positive values scroll downwards.

local wezterm = require 'wezterm';

return {
  keys = {
    {key="PageUp", mods="SHIFT", action=wezterm.action{ScrollByPage=-1}},
    {key="PageDown", mods="SHIFT", action=wezterm.action{ScrollByPage=1}},
  }
}

Since: nightly builds only

You may now use floating point values to scroll by partial pages. This example shows how to make the PageUp/PageDown scroll by half a page at a time:

local wezterm = require 'wezterm';

return {
  keys = {
    {key="PageUp", mods="SHIFT", action=wezterm.action{ScrollByPage=-0.5}},
    {key="PageDown", mods="SHIFT", action=wezterm.action{ScrollByPage=0.5}},
  }
}