Screencastify provides a handful of annotation tools that you can use during a tab or desktop recording. These tools give you lots of options for customizing and enhancing your screencasts.
The Annotation toolbar
When you start a recording, the annotation toolbar will appear in the bottom left-hand corner of your browser tab. This toolbar is where you can toggle each of the annotation tools.
You can retract this toolbar at any time by clicking the 
icon or hide it by pressing Alt + T for Windows and Option + T for Mac.†
Dragging the Annotation toolbar
You can now drag the annotation toolbar around your screen to place it at your convenience. Locate the 
icon on its left, click over to drag the toolbar, and release it to set the toolbar.
Focus mouse
Click the 
icon to shine a spotlight on your mouse.
The Keyboard shortcut is Alt +F for Windows and Option +F for Mac
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The Focus mouse tool is particularly helpful for showing your audience how to navigate a website or perform an action.
Fireworks
When you click the 
icon to enable this tool, fireworks will appear every time you click 🎆
The Keyboard shortcut is Alt +x for Windows and Option +X for Mac
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Add a fun element to your recording and capture your viewer's attention with this tool.
Highlight mouse clicks with a pink circle
Click the 
icon to show a red circle around your mouse when you click it. This is enabled by default.
The Keyboard shortcut is Alt +C for Windows and Option +C for Mac
Pen
Click the 
icon to enable the pen tool. The pen tool allows you to draw anywhere in your browser tab. After you select this tool, you can select a color. You can also change the thickness of the pen stroke by pressing the up/down arrows on your keyboard.
The Keyboard shortcut is Alt +P for Windows and Option +P for Mac
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You can quickly wipe all the annotations on your screen by clicking over the icon 
Rectangle
Click the 
icon to create a rectangle. Select from one of the color options for the rectangle line. Click on the screen to start creating the figure and release you've reached the size you wanted.
The Keyboard shortcut is Alt +R for Windows and Option +R for Mac
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Use the rectangle option to focus the viewer's attention on a particular text or object that you are presenting. Drawing a rectangle is fast and neat!
Stickers
Click the 
icon to add stickers to your recording. You can also change the size of the sticker by pressing the up/down arrows on your keyboard.
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Use the stickers when recording feedback videos for your students!
Eraser
Click the 
icon to enable the eraser. You can then erase any drawings you made using the pen tool. When you're finished, click the 
icon to return to a regular cursor.
The Keyboard shortcut is Alt +E for Windows and Option +E for Mac
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You can also change the thickness of the eraser by pressing the up/down arrows on your keyboard.
Use the Keyboard shortcut to return to a regular cursor Alt + M for Windows and Option +M for Mac.
Clear screen
To erase all of your pen drawings with one click, simply click the icon.
The Keyboard shortcut is Alt +Z for Windows and Option +Z for Mac
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Use this feature with the pen, rectangle, and stickers to quickly clear your screen.
Embed Webcam
Activate your camera from the Recording Control Panel. 
Then, you will be able to toggle your webcam on and off during a recording on the toolbar.
Click the 
icon to embed your webcam into a corner of your recording. Click it again 
to turn your webcam off.
The Keyboard shortcut is Alt +W for Windows and Option +W for Mac
Prefer to see this all in a video? We're partial to video, too!😁 Check out the whole process on the Screencastify Help YouTube page.
What's Next?🧐
NOTE
You must start recording with either the "Microphone" or "Embed Webcam" option enabled to toggle your webcam on and off during a recording.