Change size of buttons (close, minimize, etc) in Windows 10

Problem:

In small screens the size of caption buttons is so small and it’s difficult to read.

Solution:

Increase the size using the registry editor.

Using larger caption buttons will also increase the height of title bars.

Step by step

  1. Open Registry Editor (regedit.exe). You can press Windows key + R and type regedit.exe.
  2. Navigate to the key below in the left pane of Registry Editor.

HKEY_CURRENT_USER\Control Panel\Desktop\WindowMetrics

  1. In the left pane choose WindowsMetrics key. Then in the right pane of the WindowsMetrics key, double click/tap on the CaptionHeight string value to modify it.
  2. Enter a value between -120 (smaller) to -1500 (larger) for what you want, I prefer -420 value, and click/tap on OK.

-330 is the default value. -420 is the result of -15 x 28 px= -420, hence buttons will be 28px size.

The value uses the following formula: -15 x size (the size you want in pixels).

For example: -15 x 22 = -330.

  1. When finished, close Registry Editor.

Source:

https://www.tenforums.com/tutorials/79900-change-size-caption-buttons-windows-10-a.html

https://answers.microsoft.com/en-us/windows/forum/all/size-of-close-minimise-and-maximise-buttons/4368fd4c-fd50-4955-8809-1e8bfdfdd88e