Stable Diffusion: How to Use VAE

An In-Depth Look at VAE in Stable Diffusion: Improve Your Workflow

Stable Diffusion: How to Use VAE

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VAE is a limited update for the Stable Diffusion, available in only the 1.4 and 1.5 models. It aims to help users to improve their image’s rendering eyes.

Today, in the below read, we aim to let you know what VAE is and how to use it in Stable Diffusion to improve your content’s result quality.

How to Use VAE?

To use the VAE, you first need to download it. Currently, there are two improved versions available on Hugging Face.

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You can download them using the below link for both EMA and MSE:




  • The VAE installation procedure implies the AUTOMATIC1111 GUI.
  • Put the downloaded files into the directory as stable. Diffusion.WebUI/models/VAE




  • To use the VAE in your AUTOMATIC1111 GUI model, click Settings and then the Stable Diffusion section on the left.
  • Find the Section known as SD VAE.
  • In the following menu, select any VAE file you wish to use.
  • Now click the Apply Settings tab on the top, and it will apply the settings successfully after the loading.

If you cannot find the settings, click on the Show All Pages option on the left side. It will show all the settings on a single page. Now use CTRL+F to find the settings you want.

Is VAE Necessary to Install for Stable Diffusion?

No, installing VAE files is unnecessary, as the default VAE is already available with the V1 and V2 models. When people talk about installing the VAE, they refer to downloading and installing the enhanced versions of the VAE for better results.


The above short steps were meant to educate you about downloading and installing the improved versions of VAE. The Stability released them specifically for the 1.4 and 1.5 models to provide further noticeable improvements to rendering faces and eyes in an image.

However, it is not compulsory to use them, and it depends entirely upon the user’s will to download and use them. Using them does not harm or disintegrate your image.