How to turn off tab previews in Safari on Mac

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On my old Mac, the page preview feature causes lag and stuttering, can I turn it off?

After the release of macOS Big Sur, the Safari browser received several visual tweaks and improvements. One of the innovations was the preview of open tabs when hovering over them.

The chip will be useful with a large number of open tabs, but on older Macs it can cause interface lags.

Unfortunately, there is no simple switch to deactivate this feature, but the almighty Terminal can handle this as well.

How to disable tab previews in Safari

1. First, go to System Preferences – Protection and Security – Privacy .

2. Click on the lock and log in to unlock the settings.

3. In the sidebar, find the Disk Access section .

4. Click “+” in the right block and add the Terminal from the Programs – Utilities folder . This will give the application the access it needs to make changes to the browser.

5. Launch the Terminal and run the following command:

defaults write com.apple.Safari DebugDisableTabHoverPreview 1

6. Restart Safari.

If you later need to return the tab preview, run the following command in the Terminal:

defaults write com.apple.Safari DebugDisableTabHoverPreview 0

Changes will take effect after restarting the browser.

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