~~Title: Options~~
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These options affect the [[:additional_functionality:viewing_images|standalone image viewer]].

  * **Default gamma correction**: Use this option if you need to adjust the gamma of images for proper color reproduction on your monitor. This sets a default gamma adjustment but you can adjust the display on-the-fly from within the viewer. 
  * **Hide scrollbars**: The viewer won't display scrollbars even if the image is too large to fit in the display. You can pan around an image with the cursor keys, and using the mouse (depending on the options set below). Some viewer plugins may not support this option. 
  * **Include histogram in information overlay**: When turned on, the information overlay that's shown when you press <kbd>F10</kbd> displays a histogram of the image's color channels.
  * **Show checkerboard behind transparent images**: When an image has an alpha channel, displays a checkerboard effect behind it instead of a solid color.
    * **Extend to full window if possible**: Extends the checkerboard to the full size of the viewer window, even if the image is smaller than the window. Only supported with accelerated (GPU) rendering.
  * **Show loading overlay**: When a picture is being loaded, a small "Loading..." indicator will be displayed.
  * **Show status icons**: If the currently viewed image has any [[:file_operations:labels|status icons]] assigned these will be displayed in the status bar (or top-left corner of the viewer window if the status bar is turned off). 
  * **Show thumbnails in Marked Pictures pane**: Thumbnails of each [[:additional_functionality:viewing_images:image_marking|marked image]] will be shown in the //Marked Pictures// pane in the viewer. You can configure the thumbnail size below.
  * **Use EXIF information to auto-rotate pictures**: Most modern digital cameras contain an orientation sensor that records into the image the orientation of the camera when the picture was taken. If this option is turned on Opus will read the orientation information from the image and automatically rotate the displayed picture so that it appears the right way up. The actual image file on disk is not modified, only the display in the viewer. 
  * **Use magnifier when selecting a region**: When selecting a region to copy to the clipboard or to crop the image, displays a magnifier tool making it easier to see what you are selecting. The size of the magnified area and the initial zoom level can be configured here. When the magnifier is shown you can use the mouse wheel to zoom in and out, and the cursor keys to nudge the magnifier for pixel-perfect positioning.