Windows 11 does not support taskbar size adjustment as of October 2021. We have found a solution for you to tweak this. Now you can make the taskbar smaller or larger with a simple registry tweak. Here are the steps to follow;

Edit Registry in Windows 11

You can follow these steps to change the size of the taskbar or you can download the registry file and run it as Administrator to do the task.

If you want to do it yourself, first of all open “Registry Editor” by clicking on the start and type “regedit” and hit enter.

When the registry editor is open, navigate to the following address line.

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced

Once you are there right-click on “Advanced” in the sidebar and select NEW> DWORD (32-bit) value.

A new entry will be added to the list in the rightmost pane of the Registry Editor window. Type or paste in the name TaskbarSi.

Double click “Taskbarsi,” and an “Edit” window will pop up. In the “Value Data” field, enter either 0, 1, or 2. This number represents the size of the taskbar: “0” means smallest, “1” means medium (default), and “2” means largest. When you’re done, click “OK.”

Next, close Registry Editor and restart your Windows 11 PC. When you log in again after rebooting, you’ll find that your taskbar is now a different size!

If you change your mind, edit HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\TaskbarSi again in Registry Editor, enter a new value  (0, 1, or 2), then restart. To revert back to the default size, enter “1” for the TaskbarSi value. Or you can use the registry files we’ve provided below.

Download One Click Registry File

If you’d like to avoid manually editing your registry, you can download our one-click registry hack files. Within the ZIP, you’ll find three files that will change your Windows 11 taskbar size or small, medium, or large after a reboot.

Download the Windows 11 Taskbar Size Hack Files

After you download the file, unzip it to any location, and you’ll have three files:

• win11_taskbar_small.reg: This makes your taskbar smaller than the default.
• win11_taskbar_medium.reg: This makes your taskbar the default medium size.
• win11_taskbar_large.reg: This makes your taskbar larger than the default.

I hope you have understood all the process. If you still have any questions, feel free to ask in the comments section.

Source: HowtoGeek.com