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Image Sizes (https://support.google.com/google-ads/editor/answer/57755?hl=en Typically pick about 5 sizes):
Always tell them the image file should be no larger than 150kb
Size recommendations:
250 x 250
200 x 200
468 x 60
728 x 90
300 x 250
Example:
Audience:
Users who have been to http://Nurse.com but have not ever been to the job board.
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