old_contents: 
  # timeouts
  TIMEOUT = 30
  WAIT_TIME = 0.0
  
  MAX_TIMEOUT = 60.0
  MAX_WAIT_TIME = 10.0
  
  # Default size of browser window.  As there're no decorations, this affects
  # both "window.inner*" and "window.outer*" values.
  WINDOW_SIZE = '1024x768'
  
  # Window size limitations.
  WINDOW_MAX_WIDTH = 20000
  WINDOW_MAX_HEIGTH = 20000
  WINDOW_MAX_AREA = 4000*4000
  
  MAX_WIDTH = 1920
  MAX_HEIGTH = 1080
  
  AUTOLOAD_IMAGES = 1
  
  # This value has the same meaning as "level" kwarg of :func:`zlib.compress`:
  # - 0 means no compression at all
  # - 1 means best speed, lowest compression ratio
  # - 9 means best compression, lowest speed
  #
  # The default is 1, because it is twice as fast as 9 and produces only 15%
  # larger files.
  PNG_COMPRESSION_LEVEL = 1
  
  # There's a bug in Qt that manifests itself when width or height of rendering
  # surface (aka the png image) is more than 32768.  Usually, this is solved by
  # rendering the image in tiled manner and obviously, TILE_MAXSIZE must not
  # exceed that value.
  #
  # Other than that, the setting is a tradeoff between performance and memory
  # usage, because QImage that acts as a rendering surface is quite a resource
  # hog.  So, if you increase tile size you may end up using a lot more memory,
  # but there is less image pasting and the rendering is faster.  As of now, 2048
  # size is chosen to fit commonly used 1080p resolution in one tile.
  TILE_MAXSIZE = 2048
  
  # defaults for render.json endpoint
  DO_HTML = 0
  DO_IFRAMES = 0
  DO_PNG = 0
  SHOW_SCRIPT = 0
  SHOW_CONSOLE = 0
  SHOW_HISTORY = 0
  SHOW_HAR = 0
  
  # servers
  SPLASH_PORT = 8050
  PROXY_PORT = 8051
  MANHOLE_PORT = 5023
  MANHOLE_USERNAME = 'admin'
  MANHOLE_PASSWORD = 'admin'
  
  # pool options
  SLOTS = 50
  
  # disk cache options - don't enable it unless you know what you're doing
  CACHE_ENABLED = False
  CACHE_SIZE = 50  # MB
  CACHE_PATH = '.splash-cache'
  
  # security options
  ALLOWED_SCHEMES = ['http', 'https', 'data', 'ftp', 'sftp', 'ws', 'wss']
  JS_CROSS_DOMAIN_ENABLED = False
  
  # logging
  VERBOSITY = 1
  
new_contents: 
  # timeouts
  TIMEOUT = 30
  WAIT_TIME = 0.0
  
  MAX_TIMEOUT = 60.0
  MAX_WAIT_TIME = 10.0
  
  # Default size of browser window.  As there're no decorations, this affects
  # both "window.inner*" and "window.outer*" values.
  WINDOW_SIZE = '1366x768'
  
  # Window size limitations.
  WINDOW_MAX_WIDTH = 20000
  WINDOW_MAX_HEIGTH = 20000
  WINDOW_MAX_AREA = 4000*4000
  
  MAX_WIDTH = 1920
  MAX_HEIGTH = 1080
  
  AUTOLOAD_IMAGES = 1
  
  # This value has the same meaning as "level" kwarg of :func:`zlib.compress`:
  # - 0 means no compression at all
  # - 1 means best speed, lowest compression ratio
  # - 9 means best compression, lowest speed
  #
  # The default is 1, because it is twice as fast as 9 and produces only 15%
  # larger files.
  PNG_COMPRESSION_LEVEL = 1
  
  # There's a bug in Qt that manifests itself when width or height of rendering
  # surface (aka the png image) is more than 32768.  Usually, this is solved by
  # rendering the image in tiled manner and obviously, TILE_MAXSIZE must not
  # exceed that value.
  #
  # Other than that, the setting is a tradeoff between performance and memory
  # usage, because QImage that acts as a rendering surface is quite a resource
  # hog.  So, if you increase tile size you may end up using a lot more memory,
  # but there is less image pasting and the rendering is faster.  As of now, 2048
  # size is chosen to fit commonly used 1080p resolution in one tile.
  TILE_MAXSIZE = 2048
  
  # defaults for render.json endpoint
  DO_HTML = 0
  DO_IFRAMES = 0
  DO_PNG = 0
  SHOW_SCRIPT = 0
  SHOW_CONSOLE = 0
  SHOW_HISTORY = 0
  SHOW_HAR = 0
  
  # servers
  SPLASH_PORT = 8050
  PROXY_PORT = 8051
  MANHOLE_PORT = 5023
  MANHOLE_USERNAME = 'admin'
  MANHOLE_PASSWORD = 'admin'
  
  # pool options
  SLOTS = 50
  
  # disk cache options - don't enable it unless you know what you're doing
  CACHE_ENABLED = False
  CACHE_SIZE = 50  # MB
  CACHE_PATH = '.splash-cache'
  
  # security options
  ALLOWED_SCHEMES = ['http', 'https', 'data', 'ftp', 'sftp', 'ws', 'wss']
  JS_CROSS_DOMAIN_ENABLED = False
  
  # logging
  VERBOSITY = 1
  
subject: Increase default WINDOW_SIZE