1. The document discusses various image editing techniques used to manipulate images for a contents page, including removing backgrounds, using spot healing and blur tools, adjusting hue, color balance and brightness.
2. Specific techniques mentioned include using the quick selection tool to remove backgrounds, spot healing to blend gaps, auto tone to lighten images, adjusting hue to make colors stronger, and applying strokes and blur to draw attention to focal points.
3. The final manipulated images have brighter tones, striking colors and less distracting backgrounds to draw the target audience's attention to the main article for the contents page.