Table of contents
Gzipping
Criteo can receive compressed bid requests from partners and send them back compressed bid responses.
In order for our engine to properly handle a gzipped request, the HTTP header Content-Encoding: gzip must be present in the bid request.
In order for our engine to properly generate a gzipped response, the HTTP header Accept-Encoding: gzip must be present in the bid request.
For information, by default, all partners receive NON-compressed bid responses from Criteo.
Creatives - Formats for banners
Criteo primarily deals with so-called “dynamic creatives”. These creatives consist of a banner size (height and width) of a layout and of several products deemed interesting for the user. There are currently hundreds of different banner sizes, a dozen layouts, and billions of unique products. As Criteo’s operation grows, these numbers are expected to increase continually. Criteo uses two types of creatives: HTML within a JS tag, and HTML within an iframe.