# Single files Diffusers supports loading pretrained pipeline (or model) weights stored in a single file, such as a `ckpt` or `safetensors` file. These single file types are typically produced from community trained models. There are three classes for loading single file weights: - [`FromSingleFileMixin`] supports loading pretrained pipeline weights stored in a single file, which can either be a `ckpt` or `safetensors` file. - [`FromOriginalVAEMixin`] supports loading a pretrained [`AutoencoderKL`] from pretrained ControlNet weights stored in a single file, which can either be a `ckpt` or `safetensors` file. - [`FromOriginalControlnetMixin`] supports loading pretrained ControlNet weights stored in a single file, which can either be a `ckpt` or `safetensors` file. To learn more about how to load single file weights, see the [Load different Stable Diffusion formats](../../using-diffusers/other-formats) loading guide. ## FromSingleFileMixin [[autodoc]] loaders.single_file.FromSingleFileMixin ## FromOriginalVAEMixin [[autodoc]] loaders.single_file.FromOriginalVAEMixin ## FromOriginalControlnetMixin [[autodoc]] loaders.single_file.FromOriginalControlnetMixin