PROMPT GUIDE

How to Use ADetailer (What the Settings Mean and How to Set Them)

ADetailer is an extension used in AUTOMATIC1111, Forge and similar interfaces. When a face comes out small and broken in a full-body image, or a hand looks wrong, it automatically redraws just that part. Rather than the causes of broken faces, this guide focuses on what ADetailer's settings mean and how to set them.

Last updated: 2026-10-22 approx. 3 min read

日本語版

The short answer

ADetailer is an extension that automatically finds faces or hands in a finished image and redraws only those parts. Start with a face detection model and a medium denoising strength. If the face turns into someone else, lower the denoising; if problems remain, raise it, adjusting one thing at a time.

What is ADetailer and what does it do?

It is an extension that automatically finds faces and hands in an image, redraws just those parts at a larger size, and puts them back.

In full-body images the face is small, so there is little room for detail and it breaks easily. After generation, ADetailer automatically 1) detects where the face or hand is, 2) crops and enlarges that area and redraws it (inpaint), and 3) puts it back into the original image. Think of it as doing the same thing as manual inpainting, every time, all at once.

Setting	Meaning	How to set it
Detection model	Choose face, hand, person, etc.	Start with face; do hands in a second tab
Detection confidence	How certain a detection must be to fix it	Lower it if small faces are missed
Mask dilation	Expands the area to fix slightly	Increase a little if the seam shows
Mask blur	How the fixed area blends into the original	Increase if the seam is sharp
Denoising strength	How much to redraw	Start medium; lower it if the face changes
Separate prompt	Words used only for that part	Left blank, the main prompt is used

Full-body anime girl on a park path, a composition where the face is small — 全身で顔が小さい絵

Full-body anime girl standing with her hands down at her sides — 全身で顔が小さい絵

Illustration usage rules

Rinka's tips

Setting names and defaults can change between versions. Check the extension's page for the current names
The stronger the fix, the further it drifts from the original. Starting weak to medium is less likely to go wrong

How do you use ADetailer? (First steps)

Steps to fix faces with ADetailer

Install ADetailer from the extensions list and reload the interface
Open the ADetailer section that appears on the generation screen and tick the enable box
Choose a face model as the first detection model
Leave the denoising strength at medium (the default) and make an image
Compare the faces: lower the denoising if the face became someone else, raise it if problems remain
To fix hands too, add a hand detection model in the second tab

To fix faces and hands at the same time, split them into tabs: face in the first, hands in the second. Trying to fix everything in one tab often leaves the settings wrong for one of them.

How do you write ADetailer's separate prompt?

Left blank, the main prompt is used. Write a short one only when you want to change the expression or keep the eye color.

Words in the separate prompt are applied only to the detected part, such as the face. Clothes and background aren't in that crop, so write only face-related words. Keep hair and eye colors the same as in the main prompt, or that part alone may change color.

Face prompt example: 1girl, smile, red eyes, light blonde hair, detailed eyes, looking at viewer

Face negative example: worst quality, low quality, bad anatomy, asymmetrical eyes, extra eyes

What if ADetailer turns the face into someone else?

The usual causes are denoising that is too strong or separate-prompt words that don't match the original image.

Problem	Cause	Fix
Face looks like someone else, style changes	Denoising too strong	Lower the denoising
The seam around the fixed area shows	Mask blur and dilation too small	Increase blur and dilation slightly
Small faces aren't fixed	Not detected	Lower the confidence or make the original image a little larger
Unrelated areas turn into faces	Confidence too low	Raise the confidence
Eye or hair color changes	Colors missing or different in the separate prompt	Use the same color words as the main prompt
Hands get worse	Hand detection or settings don't fit	Fix hands in a separate tab, more gently, or hide hands in the composition

For why faces break and fixes other than ADetailer, see Why AI Art Faces Get Distorted and How to Fix Them (Full Body, Distant Shots, Inpaint) →

For hand fixes using composition and negative prompts, see How to Fix Bad Hands in AI Art: The Complete Guide →

To redraw a part manually with inpaint, see How to Use img2img and Inpaint (Fixing Only Part of an Image) →

Should ADetailer always be on?

Not necessarily. It is handy for full-body images where faces are small, or when you make many images and pick the best.

In face close-ups and upper-body images the face is already large, so ADetailer may change little and only add generation time. In full-body and wide shots, on the other hand, the effect is large. Turning it on or off to suit the composition is recommended.

FAQ

Frequently Asked Questions

Which interfaces support ADetailer?

It is used as an extension for AUTOMATIC1111, Forge and similar interfaces. ComfyUI has nodes that do similar work. Support changes between versions, so check the download page.

What denoising strength do you recommend?

There is no single right value. Start with the default, lower it if the face becomes someone else, and raise it a little if problems remain, one step at a time.

Can ADetailer fix hands too?

Sometimes, with a hand detection model. Hands are complex, though, so combining it with hiding hands in the composition or using simple hand poses is more reliable.

Do I have to write a separate prompt?

No, it works blank. In that case the main prompt is used. Write one only when you want to change the expression or keep colors.