Making alterations to images in your story is easy with the built-in editor.
To launch it, just select an image and choose edit image.
The selected image will now be opened in the editor. The following options are available:
Transform tool (crop, resize, flip, rotate)
Adjust tool (brightness, contrast, saturation, etc.)
Flip the image
Rotate the image
Undo/Redo changes (not available on the Transform tools)
Zoom (not available on the Transform tools)
Once you are finished, click on Save to make the changes permanent.