Crosshairs icon

App Specs
File size:
596.92 KB
January 21, 2011
January 9, 2013

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Crosshairs is a screen ruler app for quickly getting the dimensions of anything on your screen. You can drag a transparent overlay overtop of any app and adjust the box as much as you need. No more taking a screenshot just to get the size of something.

  • Activate/deactivate the app with global hotkey, which is customizable
  • Switch between overlay colors
  • Dynamically adjust the opacity of the overlay
  • Switch between normal and inverted overlay mode
  • Copy dimensions directly to your clipboard
  • Can customize the format of the dimensions to suit your needs
  • Take a screenshot of the area beneath the overlay
  • Make pixel perfect adjustments with the keyboard

    Keyboard Shortcuts:

    Crosshairs is a menu bar app and has a very minimal interface. Most of the app's features are controlled via keyboard shortcuts. Here's a complete list:

  • Esc or Command-H = Deactivate app
  • Command-Shift-2 = Global hotkey to activate the app
  • Arrow keys = Move the overlay by 1 pixel
  • Shift + arrow keys = Move the overlay by 10 pixels
  • i = Toggle between normal and inverted overlay mode
  • Tab = Toggle between the primary/alternate overlay color
  • Command + up/down arrow = Increase or decrease the opacity
  • Command-C = Copy current dimensions to clipboard
  • Delete = Clear the current overlay
  • Command-, = Open preferences
  • Space = Take screenshot

    Note: when Crosshairs is active, it intercepts all mouse clicks so you can draw an overlay on top of existing apps. Some users have reported this as locking up the system since they can't interact with other apps. When Crosshairs is active, the menu bar icon is blue, to quickly deactivate it, just hit the Escape key.

    You can watch a video of Crosshairs in action to see all its features at

    Please contact if you have any feature requests, suggestions, or issues.

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  • What's New
    New feature: inverted overlay mode. Inverted mode fills the background instead of the selected area, and you can still change the color/opacity of the background with the standard shortcuts. Hit "i" to switch between normal and inverted.

    All changes:
  • Added inverted overlay mode (shortcut: i)
  • Made hotkey activate or deactivate app (instead of just activating it)
  • Some minor user interface updates to handles and dimensions bubble to help stand out better
  • Crosshairs will no longer deactivate the current app so it works better with apps like Photoshop. Side effect is no custom cursor support. Added preference to return the old way if you prefer.
  • Added highlight to menu bar icon to show when app is active
  • Added in-app help screen that lists all keyboard shortcut
  • Left-click in menu bar icon activates app, right-click (control-click) shows menu
  • Fixed bugs with color preference settings not taking effect right away
  • Fixed bug with taking screenshots on computers with multiple screens being off
  • Ensured overlay always snaps to whole pixels, even during screen zoom, for sharpest possible lines
  • Now always showing dimensions outside box and removed option

  • Crosshairs (com.giantcomet.crosshairs) is a Mac software application that has been discovered and submitted by users of

    Operating System: Mac

    Default Install Path: /Applications/

    Minimum OS version: 10.6

    Copyright: (c) 2011, Giant Comet