Free image upscaler how to use Facelift in Stable Diffusion

Improve image quality with upscalers

Our software offers a variety of ways to bump the quality beyond Stable Diffusion’s default 512×512, like Adetailer, HighDef, and Facelift Upscaler 2X and 4X with specialized photo and anime models.

If you’re using Stable Diffusion 1.5 models, why not try Adetailer?

After Detailer for SD15 is the most modern of the three upscale methods, which pin-points faces and hands to boost trouble spots. You should try Adetailer first and follow through with the other upscaling techniques below after.

How to use HighDef

To use highdef, the input must be rendered at the standard 512×512. To boost up to 1024×1024 and see two variations of the effect, we then simply reply to an image with  /highdef

This can only be done once, and it will return two variations of the same image.  It doesn’t work with 768×768 images, which are already upsampled. The longer way to do it is to type /more /size:1024×1024 /images:2, which does the same thing.

You can then boost the pixels further with Facelift, explained below.

How to use Facelift

To use it, simply reply to an image with /facelift and you’re done. You can only upscale one image at a time, but the usage isn’t metered or limited in any way. You have unlimited facelifts, feel free to upscale everything all day long.

The /facelift command fixes faces (glitches, imperfections, rough and oily skin) as well as upscales your picture. Sometimes you don’t want faces retouched, so there are two other modes:

/facelift /anime — for any kind of illustrated works, pass the /anime secondary command. It works great on drawings, paintings, CGI, including semi-realistic CGI.

/facelift /photo — when you want upscaling but not face retouching, such as landscape photo, or when you do not want your character to have that “airbrushed” look


Control the amount of facelifting by adding the strength parameter. The strength is set to 1 by default.

/facelift /strength:0.5


Intentional loss of detail

Just like turning on “beauty face” on your smart phone camera, facelift uses similar technologies to smooth fine details. This can sometimes result in overly smooth faces or loss of some unique facial details, like freckles or birthmarks. You can offset this by targeting an ideal render from the start (see first paragraph).

But more than often, the results are really impressive.

Typical render:

Upscaled image:


The “more” method

Reply with:

/more /size:1300×1300 /images:2

This feature is often misunderstood, so we recorded a whole one hour video podcast on how to use it.


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