Mio

A screenshot utility for macOS.

Download for macOS  ·  简体中文  ·  License

_{Requires macOS 26+ · Apple Silicon}

_{Swift 6.3  ·  SwiftUI · ScreenCaptureKit  ·  Offline  ·  ~5 MB  ·  EN / 中 / 日 / FR / DE}

A screenshot tool that gets out of your way.

Press the hotkey. Every screen freezes on that exact frame in under 200 ms, and you take your time picking what you want — a window, a region, or a whole display. Window captures come out with transparent rounded corners. Region captures hand off to a built-in editor when you want one. Everything stays on your Mac.

Mio lives in the menu bar. No Dock icon. No login. No network.

What's new

• Built-in editor. Six tools, three thicknesses, seven preset colors, screen color picker.
• Window capture with transparent corners. No more wallpaper bleeding into the rounded edges.
• Three independent shortcuts. Quick window, advanced window (into editor), and full screen.

Highlights

Capture

• Per-screen freeze in under 200 ms — pick from still images, not a moving target
• Window-aware hover; click for a clean cut, drag for a region
• Multi-display picker for full screen capture

Edit

• Rectangle, ellipse, arrow, brush, mosaic, text
• Vector text annotations stay editable until you confirm
• Mosaic granularity is fixed so redactions can't leak
• Pick any color from anywhere on your screen

Native

• Menu bar only, accessory app
• Strict Concurrency, no third-party SDKs
• Zero network access, zero analytics

Get started

Download Mio.app from Releases, drag it to Applications, and open it. Grant Screen Recording when prompted.

If macOS asks about an unidentified developer the first time, open System Settings → Privacy & Security, scroll to the prompt, and click Open Anyway.

Privacy

Mio runs entirely on your Mac. Screenshots go to the clipboard and, if you opt in, to a folder you choose. Nothing leaves the device. There's no account, no telemetry, no analytics — the app does not open a network connection at all.

Info

Developer · iSoldLeo · MeowLynxSea  ·  Source · github.com/iSoldLeo/Mio  ·  Issues · Report a bug  ·  License · GPL-3.0

Build from source

git clone https://github.com/iSoldLeo/Mio.git
cd Mio
open Mio.xcodeproj

Requires Xcode 26+. Select the Mio scheme and run.