How to create a gradient for hero images (from Erika):

  1. Open image in InDesign
  2. Create a black box using the square Rectangle Tool
  3. Using the main arrow (Selection Tool), you right click Effects > Gradient Feather
  4. In Options, change the Angle to 90 degrees
  5. In the Gradient stops, move around the arrows to get the desired gradient effect.
  6. Export as JPG/PNG

InDesign menu settings for Gradient: