How to mark a red frame on a Mac screenshot

Some Mac users don’t know how to mark the red box when taking screenshots. In fact, it is very simple. We only need to open the magnifying glass on the launcher to search for the preview, and then open the preview image to mark it. Isn’t it very simple? .

How to mark the red box in mac screenshots

1. Click the magnifying glass on the launcher to search for preview.

2. Click on the file and click to open.

#3. Select the picture you want to edit and click to open it.

#4. After entering, you can edit and annotate at the top.

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