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How to Change the Size of Taskbar Thumbnails in Windows 10

information   Information
When you hover over the icon or button on the taskbar of opened items, it will show a thumbnail preview of the opened windows or tabs for that item.

This tutorial will show you how to change the size of taskbar thumbnails for your account in Windows 10.


Video by: Kari




EXAMPLE: Default and changed taskbar thumbnail preview size
Click image for larger version. 

Name:	Default_size_taskbar_thumbnail_preview.jpg 
Views:	218 
Size:	71.4 KB 
ID:	42423
Click image for larger version. 

Name:	300_size_taskbar_thumbnail_preview.jpg 
Views:	298 
Size:	77.3 KB 
ID:	42422




Here's How:

1. Press the Win+R keys to open Run, type regedit, and click/tap on OK to open Registry Editor.

2. In the left pane of the Registry Editor, browse to the location below. (see screenshot below)

HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Taskband
Name:  taskbar_thumbnail_preview_size_registry.png
Views: 2186
Size:  31.3 KB

3. Do step 4 (change) or step 5 (default) below for what you would like to do.


 4. To Change Taskbar Thumbnail Preview Size

A) In the right pane of the Taskband key, double click/tap on the MaxThumbSizePx DWORD to modify it. (see screenshot below step 2)
Note   Note
If you don't have a MaxThumbSizePx DWORD, then right click or press and hold on an empty area in the right pane of the Taskband key, click/tap on New and DWORD (32-bit) Value, type MaxThumbSizePx, and press Enter.


B) Select (dot) Decimal, type a number (ex: 300) you want for the pixel size of taskbar thumbnail previews, click/tap on OK, and go to step 6 below. (see screenshot below)

Name:  MaxThumbSizePx.png
Views: 4470
Size:  13.0 KB

C) In the right pane of the Taskband key, double click/tap on the MinThumbSizePx DWORD to modify it. (see screenshot below step 2)
Note   Note
If you don't have a MinThumbSizePx DWORD, then right click or press and hold on an empty area in the right pane of the Taskband key, click/tap on New and DWORD (32-bit) Value, type MinThumbSizePx, and press Enter.


D) Select (dot) Decimal, type the same number (ex: 300) from step 4B above, click/tap on OK, and go to step 6 below. (see screenshot below)

Name:  MinThumbSizePx.png
Views: 4428
Size:  13.0 KB


 5. To Restore Default Taskbar Thumbnail Preview Size

A) In the right pane of the Taskband key, right click or press and hold on the MaxThumbSizePx DWORD, and click/tap on Delete. (see screenshot below step 2)

B) Click/tap on Yes to confirm, and go to step 6 below. (see screenshot below)

Name:  Delete.png
Views: 4416
Size:  6.9 KB

C) In the right pane of the Taskband key, right click or press and hold on the MinThumbSizePx DWORD, and click/tap on Delete. (see screenshot below step 2)

D) Click/tap on Yes to confirm, and go to step 6 below. (see screenshot below)

Name:  Delete.png
Views: 4416
Size:  6.9 KB

6. Close Registry Editor.

7. Restart explorer, or sign out and sign in to apply.



That's it,
Shawn