Negative is made for anybody who needs to compare two things on a computer screen. Whether you're a developer, designer, animator, or even just a normal user, you've probably needed to compare two "mockups", designs, browsers, simulators, or frames. Negative is a simple app that helps you do that.
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Negative is perfect for web developers. Below is an example of how it might be used for getting CSS pixel perfect.
Capture the screen with Command + G, or clear the view with Command + Delete.
Hide Negative from any app with Command + Control + H. Show it again with Command + Control + H.
Use the arrow keys to nudge Negative by 1px in any direction. Hold down Shift to jump by 10px.
Drag inside the view to move the window around. Currently, dragging on tabs will only rearrange them.
Lock Negative in place so you can click through to elements underneath.
Sometimes it's easier to see the edge of your capture against a light-colored background. Use Command + D to toggle between Dark and Light modes.
Tabs. Because you need tabs.
Zooming isn't really necessary yet because the captured image will always be resized to 1x dimensions. This feature is really just preparation for allowing arbitrary images to be opened with Negative.
| Keys | Function |
|---|---|
| Arrow Keys | Move the Window 1px |
| Shift + Arrow Keys | Move the Window 10px |
| Command + G | Take a Screenshot |
| Command + D | Dark Mode |
| Command + F | Fit Window to Image |
| Command + T | New Tab |
| Command + W | Close Tab |
| Command + } | Next Tab |
| Command + { | Previous Tab |
| Command + Shift + } | Next Tab and Resize |
| Command + Shift + { | Previous Tab and Resize |
Note: These shortcuts are "global", meaning they can be used from any app
| Keys | Function |
|---|---|
| Command + Control + H | Hide or show Negative (from any app) |