What Does Blank Page Mean?
It can reduce online window battery consumption or act as an extra defence extension for your online window.
Therefore, the about:blank page has nothing wrong with itself and
it is absolutely not dangerous.
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Check how to run Windows/Microsoft Defender full/quick/custom/offline scan to scan for malware or virus on your Windows 10/11 computer.
In the following part, we will show you how to set About Blank as a start page.
How to Set About Blank as a Start Page?

In Google Chrome
Step 1.
LaunchGoogle Chromeand hit thethree-doticon to selectSettingsin the drop-down menu.
In the left pane, chooseOn startupand tickOpen a specific page or set of pages.
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HitAdd a new pageand typeabout:blankinSite URL.
Download Google Chrome latest version.
In Microsoft Edge
Step 1.

LaunchMicrosoft Edgeand hit thethree-doticon from the top-right corner of the screen.
In the drop-down menu, chooseSettings.
PressStart, home and new tabsand tickOpen these pages.
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HitAdd a new pageand typeabout:blankinEnter a URL.
In Mozilla Firefox
Step 1.
Launch the net web surfer.
In the upper right corner of the surfing app, selectOptionsfrom the drop-down menu.
ChooseHome>Custom URLsand typeabout:blankin it.
Firefox vs Chrome, which is the best internet tool?