Sovrn Ad Tags for Header Bidding

Last Updated November 5, 2020

Not all ad partners are created equal. Some require different settings than others, and a small change can result in an increase in ad revenue. Learn more about how to set up your Sovrn ad tags effectively.

Whether you are using client side Header Bidding or Server to Server to offer your inventory to advertisers, it is important to get the most out of the ad placements and ad tags you have created for your domain. Improper implementation can result in low impressions and in some cases, no impressions at all. No impressions = no money.

In order to avoid this with Sovrn Ad Tags, there are some general rules to follow.

Ad Tags

An Ad Tag (i.e. creative tag or placement tag) is a chunk of code inserted within your domain that sends a request to the ad server to show an ad in a given place (i.e. Ad Placement). Publishers, advertisers, and ad networks use ad tags to exchange data with each other. 

For the purposes of this article we will be mostly focused on the Tag ID, which is the number you will want to reference when adding multiple tags within a Header Bidding wrapper on your page. The Tag ID for a Sovrn ad tag is highlighted in the example below.

Ad Tag example:
<script src=”//″></script>

Unique Tag IDs

When using Sovrn Ad Tags on your domain, you will need unique Tag IDs in all of your Ad Placements. No matter where you are placing Tag IDs in your domain, never use the same ID twice. If you choose to use the same tag ID, advertisers will view it as a duplicate request. This will impact fill, cpm and overall performance for multiple placements reusing the same tag ID.

However, if you manage multiple domains, you may use the same set of Tag IDs on all of your domains. That being said, we still do not recommend this approach. These are often referred to as run-of-network ad tags (or RON tags). Be aware, if you choose to reuse tag IDs across multiple domains, it will be far more complex to break down reporting for tag-level performance.

Sovrn recommends that you use a unique tag ID for each ad placement, but don’t hesitate to reach out to the Sovrn support team for questions about this.

Multi-Size Ad Units

It’s very common for publishers to want to have multi-size ad units within each ad placement. Using multi size ads allows the publisher to have a wider variety of options for advertisers to bid on, allowing publishers more opportunity to win and monetize from bids.

When creating Sovrn ad tags in //Meridian, you can only assign each ad tag one size. They are not multi-size compatible. With that said, you can still utilize the benefits of a multi size ad unit with the proper formatting.

In order to run multi-size ads with Sovrn Tags, a publisher will need a unique Tag ID for each size within each ad unit. For every Tag ID within your Ad Unit, there will be a request, the more sizes that you have in each ad unit, the more potential ad revenue you’ll be able to generate. As long as each size has a Tag ID properly mapped to it.

Please note that you may see a lower fill rate with more sizes added to your Ad Unit, but you will have more opportunity to earn more ad revenue. When possible, we recommend using more common, higher performing sizes (i.e., 728×90, 300×250, 970×90 etc ). We find that having robust tags that are unique to the size it is assigned to allows for more efficiency within our exchange.

Bid Floor

We recommend setting your floor prices to whatever makes best sense for your goals. Many of our publishers are successful with lower floor prices to encourage a higher fill rate, and others are successful with high floor prices to achieve a higher CPM.

If you decide you would like to use floors on your Sovrn Ad Tags, then we recommend you update them regularly to take advantage and compensate for seasonal trends. 

You should also consider U.S. vs non U.S. traffic, there is an option when editing Ad Tags in //Meridian to ‘Maximize fill for non-US traffic by ignoring the floor’. Advertiser bids for non-US traffic may be a bit lower than those for US traffic. By checking this box, you will increase fill rates for non-US traffic by accepting bids that are below your floor. Read this blog article if you’re interested in learning more about floor prices and how to update them effectively.


Every implementation will be unique, so ultimately it will be up to you as a publisher to decide what approach works best. The guidelines above have had the most success when it comes to utilizing Sovrn Ad Tags in the most efficient way. 

If you have any further questions about Sovrn Ad Tags or any of Sovrn products, please reach out to us and we’ll be happy to assist.

How satisfied are you with this article?

  • Not at all satisfied
  • 1
  • 2
  • 3
  • 4
  • 5
  • Completely satisfied