---
title: "Output upscaler | OptiScaler glossary"
description: "The backend you select in the overlay to produce the final image."
canonical: https://optiscaler.ink/glossary/output-upscaler
updated: 2026-10-18
---

# Output upscaler

The backend you select in the overlay to produce the final image.

## Facts (2026-10-18)

- **Version:** OptiScaler 0.9.4 (reference build, July 2026)
- **APIs:** DirectX 11, DirectX 12, Vulkan
- **Upscalers:** DLSS, FSR and XeSS inputs/outputs where compatible
- **Frame generation:** Experimental OptiFG (DirectX 12)
- **Overlay:** Insert key
- **Install:** ZIP extracted next to the main game executable
- **Platform:** Windows; Linux via Proton/Wine varies
- **Site:** Independent guide — not the official project site

## Definition: Output upscaler

The backend you select in the overlay to produce the final image.

The output can differ from the input where compatibility allows, which is the whole point of the translation layer.

## Where it matters

Start in the [guides](https://optiscaler.ink/guides) for the workflow, or go straight to [Download](https://optiscaler.ink/download) and test one game at a time with a backup in place.

## FAQ

### What does Output upscaler mean for OptiScaler?

The backend you select in the overlay to produce the final image. The output can differ from the input where compatibility allows, which is the whole point of the translation layer.

## Related

- [OptiScaler terms: OptiFG, proxy DLL, input and output](https://optiscaler.ink/glossary)
- [OptiScaler guides: install, FSR4, Linux, performance and safety](https://optiscaler.ink/guides)
- [Input upscaler](https://optiscaler.ink/glossary/input-upscaler)
- [OptiFG](https://optiscaler.ink/glossary/optifg)
- [Insert overlay](https://optiscaler.ink/glossary/overlay-insert-key)

## Download

ZIP next to the game executable: [Download OptiScaler](https://optiscaler.ink/download)

Markdown mirror: https://optiscaler.ink/glossary/output-upscaler.md