There are of course pre-trained models for CNN (most of the time it is pre-trained on ImageNet in a supervised manner). If you talk about self-supervised pre-training for CNN specifically have a look at the recent papers Convnext 2 or SparK (BERT-style pretraining for convnets).
Daango_ t1_j5xewol wrote
Do you mean mean something like this
https://pytorch.org/vision/stable/models.html
?