---
license: cc-by-sa-4.0
---

A **1-step ResShift** super-resolution student as a pixel-space **`IMAGE → IMAGE`**
upscaler for ComfyUI, at **×4 or ×2** (a `scale` dropdown on the loader). The student is
distilled (paper [2603.22490](https://arxiv.org/abs/2503.13358), [repo](https://github.com/Daniil-Selikhanovych/RSD), *One-Step Residual
Shifting Diffusion via Distillation*) from a 15-step ResShift teacher, so it does the
whole super-resolution jump in a **single stochastic network step** — no multi-step
sampler, no CFG.

It is **model-agnostic**: drop it after `VAEDecode` / before `SaveImage` and it upscales
any RGB image, not just Anima / diffusion output.

```
… → VAEDecode → IMAGE ─┐
                       ├─► ResShiftUpscale ─► IMAGE (×scale) → SaveImage
ResShiftLoader ───┘
```