To help increase competition for a particular ad size, we might substitute a similar-sized display ad to appear within an ad unit. When this happens, the size of the similar ad is modified if needed (using advanced imaging techniques) and then served in the ad unit.
Some important things to note about showing similar-sized ads:
- We may modify ads to fit in ad units that are larger or smaller than the original creative.
- Modified ads are served neatly centered at the top of the ad unit
- Modified ads fit within the existing ad unit and won't alter the layout of your page
- The new ad size might not necessarily match the full width or height of the ad unit.
For ad units opted in to showing display ads, these are just a few examples of the many possible similar-sized ad displays:
- 160 x 600 ad is placed in a 300 x 600 ad slot (no ad resizing)
- 728 x 90 ad is placed in a 970 x 90 ad slot (no ad resizing)
- 468 x 60 ad is resized to 320 x 50 in a 320 x 50 ad slot
- 336 x 280 ad is resized to 300 x 250 in a 300 x 250 ad slot
- 300 x 250 ad is resized to 336 x 280 in a 336 x 280 ad slot
- 728 x 90 ad is resized to 468 x 58 in a 468 x 60 ad slot
If you don't want your ad units to be backfilled with similar sizes, you can opt out of showing similar-sized display ads.
