doPreview

Available now on macOS. iOS release coming soon to the App Store.

doPreview is built to preview one image across multiple displays with synchronized zoom, pan, and background diagnostics.

Downloads…
doPreview app icon

How It Works

  1. Choose an image.
  2. Select target displays (built-in, external, or all).
  3. Start preview and control zoom, pan, and background live.

Core Features

  • Per-display selection with all displays selected by default.
  • Window size modes: Full Screen or 50% Display Size.
  • Synchronized multi-display preview state.
  • Optional display sleep prevention while preview is active.
  • Localized in 11 languages.

  • Touch, trackpad, and pointer pan/zoom support.
  • Zoom range from 10% to 6400%.
  • Background presets: black, gray, white, plus custom color.
  • Preview overlays can be shown or hidden.

Screenshots

See doPreview on macOS, iPad, and iPhone.

macOS

doPreview macOS composition showing built-in plus external preview.
doPreview macOS composition highlighting localization support.
doPreview macOS composition showing color and control features.

iPad

doPreview iPad composition showing built-in plus external preview.
doPreview iPad composition highlighting localization support.
doPreview iPad composition showing color and control features.

iPhone

doPreview iPhone composition showing built-in plus external preview.
doPreview iPhone composition highlighting localization support.

System Requirements

  • macOS: 13.0 or later
  • iOS: 16.0 or later (iPhone and iPad)
  • Processor: Apple Silicon or Intel Mac
  • Displays: Built-in plus supported external displays (USB-C/HDMI where available)

Downloads

Download on the Mac App Store

Direct download (DMG)

Detailed controls, keyboard shortcuts, supported image formats, and troubleshooting are in doPreview Help & FAQ.

Privacy details are available at doPreview Privacy.