Size-Based Fluid (SBF) Flowlines
( icon: represents different sizes strung together at different break points, mediaqueries)
Mainly developed as a way to deliver specific different Ad Sizes for different break points of a Responsive Web Site. This works well when you have a single 1st party ad tag and in that tag you want to deliver for e.g. a 300x600 size at desktop, then at Tablet 160x600 and 300x50 for mobile with the same creative.
It is a way of having any different size you want that switches as different breakpoints.
Many publishers ( especially SME's) are used to using IAB standard sizes, and this is an easy way to have different IAB sizes for different channels ( desktop, tablet and mobile )
We created some basic SBF Flowlines and set them up for users to test and use, but with the Narrator tool you can create any custom configuration you want in the format section.
ResponsiveAds is now also working on a solution with this format for media and creative agencies that enable a group of different sizes that can be deployed selectively into different ad slots as one tag. Instead of switching to different sizes via breakpoints or mediaqueries the ad slot from the 1st party ad server will be called to indicate size from the group of packages sizes should be delivered. This is particularly interesting to have one-tag deployed through programmatic channels that can switch from size to size depending on the target ad slot.
Contact firstname.lastname@example.org if you want to deploy this solution