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# Mixins & serialization methods

## Mixins

The `huggingface_hub` library offers a range of mixins that can be used as a parent class for your objects, in order to
provide simple uploading and downloading functions. Check out our [integration guide](../guides/integrations) to learn
how to integrate any ML framework with the Hub.

### Generic

[[autodoc]] ModelHubMixin
    - all
    - _save_pretrained
    - _from_pretrained

### PyTorch

[[autodoc]] PyTorchModelHubMixin

### Keras

[[autodoc]] KerasModelHubMixin

[[autodoc]] from_pretrained_keras

[[autodoc]] push_to_hub_keras

[[autodoc]] save_pretrained_keras

### Fastai

[[autodoc]] from_pretrained_fastai

[[autodoc]] push_to_hub_fastai



