What materials are needed from me for a Impression Campaign?
Below is everything you’ll need to prepare and send for your impression campaign.

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Leaderboard: 970 pixels x 90 pixels
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Mobile Leaderboard: 970 pixels x 250 pixels
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Side Rail Small: 300 pixels x 250 pixels
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Side Rail Tall: 300 pixels x 600 pixels
Acceptable formats: PNG, JPG, JPEG, GIF, JS, CSS, HTML