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How to upscale old or low-resolution photos locally on your Mac with Upscayl

Install Upscayl with Homebrew and enlarge images on your own GPU, free.

Short answer: Run brew install --cask upscayl (macOS 12 or later); then open Upscayl from Applications; the first time, right click it and choose Open; choose an image, pick a model such as High Fidelity or Ultrasharp, and an output folder. All steps.

  • Top pick
  • Content
  • Beginner
  • 10 minutes
  • From the README
  • Any agent

Who it is forSomeone with old family photos or small web images who needs them larger for print or a site.

The problemOnline upscalers charge per image or upload your photos to someone else's server.

The outcomeLarger, sharper versions of your images made locally.

What you need first

  • A Vulkan-compatible GPU (most integrated GPUs do not work)
  • Linux, macOS 12+ or Windows 10+
  • Node.js (Volta recommended) only if you build from source

Steps

  1. Run brew install --cask upscayl (macOS 12 or later)
  2. Open Upscayl from Applications; the first time, right click it and choose Open
  3. Choose an image, pick a model such as High Fidelity or Ultrasharp, and an output folder
  4. Upscale and compare before and after
  5. If a photo is out of focus, expect little change: Upscayl cannot de-blur

Prompt for your agent

Install upscayl/upscayl with Homebrew, then upscale the images in <folder> and save them to <output folder>. Tell me which model you used and flag any that look unchanged.

Caveat. This card is written from the upscayl/upscayl README, not from a test run by Deduped. Before you start, make sure you have a Vulkan-compatible GPU. Check the repo for newer instructions before you rely on these steps.

Use this in your AI agent

Ask your agent

Using the Deduped MCP, get the setup steps for upscayl/upscayl and "Upscale old or low-resolution photos locally on your Mac"

Add Deduped to Claude Code once

claude mcp add --transport http deduped https://dedupedai.com/mcp

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