Similar Sizes

From time to time you may wish to run similar sized banners in a zone. For example,
you might want to allow an advertiser to run a 120×600 skyscrapers in your 160×600
zone. This can easily be done without asking your advertiser to create a new banner
of the appropriate size, which can often take a long time and potentially derail
a campaign.

Create the Secondary Size

The first step is to create the secondary size if it does not exist. Click on
the Settings icon in the AdvertServe tool bar. That will take you to the
list of sizes that are available (as shown below), which you can search for the size you are
interested in to see if it exists already.

Flexible Banner Sizes: Create the Secondary Size

Make the Sizes Compatible

Once the secondary size exists, the next step is to edit the size of your zone.
For this example I am going to edit my 300×600 size. My goal is to allow
advertisers to run 300×300 and 300×250 ads in my 300×600 zones.

Flexible Banner Sizes: Make the Sizes Compatible

As you can see from the screenshot above, all we need to do is move the desired
300×300 and 300×250 sizes into the Compatible box on the right and finally
press the Save Changes button at the bottom of the page. Once you have
done this, you will be able to assign campaigns than contain 300×300 and 300×250
banners to your 300×600 zones.

Reverse Compatibility

One thing you will notice is that the size compatibility only goes one way. I
can assign a 300×250 banner to my 300×600 zones, but it won’t be possible to do
the reverse and assign a 300×600 banner to my 300×250 zones. This is done to
prevent mistakes such as assigning larger banners to smaller zones that they
won’t fit into.

If you did want to allow such a thing, you would simply need to edit the 300×250
size and make it compatible with the 300×600 size. That will give you a two-way
compatibility between the sizes so they can be used interchangeably. Odds are
you probably won’t need to do this, but the possibility does exist.

Closing Thoughts

One last thing to be aware of is that you might actually need to make a change to
your zone code to support multiple sizes. This will only be true if you are using
an IFRAME based code. The problem with IFRAME tags is
that they are fixed-size, so if you try to run a 300×250 banner in a 300×600 sized
IFRAME it won’t shrink down to the size of the banner and you will be
left with a lot of whitespace below the banner, which is usually not desired. To
remedy that problem, simply generate a new zone code without checking the IFRAME
option.