wezterm/docs/config/lua/keyassignment/ScrollByPage.md

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'
local act = wezterm.act

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

Since: 20220319-142410-0fcdea07

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=act.ScrollByPage(-0.5)},
    {key="PageDown", mods="SHIFT", action=act.ScrollByPage(0.5)},
  }
}