Criteo supports Google shopping feed (also known as Google product feed specifications).
If you already have a Google shopping feed, there is no need for you to create a new feed, you can use your existing one.
There are two limitations to adhere to:
1. All csv header names and xml node names need to be in English. We do not support internationalized field feeds. However, the information below these fields can be in any language.
2. We do not support compressed file formats.