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Windows 7: Taskbar List or Thumbnail Previews Mode - Change


Taskbar List or Thumbnail Previews Mode - Change

How to Change Taskbar Thumbnail and List Mode Threshold in Windows 7 and Windows 8
Published by Brink
03 Apr 2010
Published by

How to Change Taskbar Thumbnail and List Mode Threshold in Windows 7 and Windows 8


information   Information
By default, the taskbar will show thumbnail previews of open windows and programs when you hover the mouse pointer over it's taskbar icon while using a Aero theme.

When you are using a Basic or High Contrast theme, the taskbar will only show a list of tabs (list mode) for the open windows and programs (ex: Internet Explorer) when you hover the mouse pointer over it's taskbar icon, and never any thumbnail previews.

While still using a Aero theme, this will show you how to change the number of thumbnail previews that will display for a icon on the taskbar before it switches to list mode instead in Windows 7.
Note   Note
If the taskbar thumbnail previews of multiple windows/tabs opened for a icon go past your screen's edge, then they will automatically be displayed in list mode instead of thumbnail preview mode.

For example, if your screen resolution is 1200x800, and say you have more than 15 tabs open in IE, then it will display in list mode when you hover over IE's icon on the taskbar.

Limits before list mode examples:
1920x1080 = 15 tabs or windows open for a icon
1200x800 = 10 tabs or windows open for a icon

EXAMPLE: Taskbar Thumbnail Previews Mode
-default.jpg
EXAMPLE: Taskbar List Mode
Name:  List-mode.jpg
Views: 44868
Size:  55.4 KB



OPTION ONE
Change Taskbar Thumbnail and List Mode Threshold using REG File
1. To Always Have Taskbar List Mode
NOTE: This sets the NumThumbnails value to 0 in OPTION TWO below.
A) Click on the download button below to download the file below.
Taskbar_Always_List_Mode.reg
download
B) Go to step 3.
2. To Have Taskbar Thumbnail Previews Mode
NOTE: This deletes the NumThumbnails value in OPTION TWO below. This is the default setting.
A) Click on the download button below to download the file below.
Taskbar_Thumbnail_Previews_Mode.reg
download
3. Save the .reg file to your desktop.

4. Double click/tap on the downloaded .reg file to merge it.

5. If prompted, click/tap on Run, Yes (UAC), Yes, and OK to approve the merge.


6. Log off and log on, or restart the computer to apply the changes.

7. When done, you can delete the downloaded .reg file if you like.







OPTION TWO
Change Taskbar Thumbnail and List Mode Threshold in Registry Editor
1. Press the Windows + R keys to open the Run dialog, type regedit, and click/tap on OK.

2. In regedit, navigate to the location below. (see screenshot below step 3A)
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Taskband
3. To Change Thumbnail Previews Threshold Before Switching to List Mode
A) In the right pane, right click on a empty space and click on New and DWORD (32-bit) Value. (see screenshot below)
-step1.jpg
B) Type NumThumbnails and press enter. (see screenshot below)
-step2.jpg
C) In the right pane, double click on NumThumbnails. (see screenshot above)
D) Type in how many thumbail previews you want to have display so that it will switch to list mode after this number, then click on OK. (see screenshot below)
NOTE: Typing in 0 will result in always being in list mode.
Name:  Step3.jpg
Views: 44754
Size:  39.4 KB
E) Go to step 5.
4. To Restore Taskbar Thumbnail Previews Mode
NOTE: This is the default setting.
A) In the right pane, right click on NumThumbnails and click on Delete. (see screenshot below step 3B)

B) Click on Yes to confirm. (see screenshot below)
Name:  Delete.jpg
Views: 44467
Size:  44.0 KB
5. Close regedit.

6. Log off and log on, or restart the computer to apply the changes.
That's it,
Shawn






03 Apr 2010   #1
juanantoniod

Microsoft Windows 7 Home Premium 32-bit 7601 Multiprocessor Free Service Pack 1
 
 

You are very talented, Brink! How did you learn to do all this stuff? Is there any video training available so that I can learn some "programming", particularly VB Scripting for Outlook? [I need video training, becaue I have a cognitive deficit which makes it hard for me to read and learn things.]

Thank you so much for doing this! You're awesome!

~Antonio


My System SpecsSystem Spec
03 Apr 2010   #2
derekimo

Microsoft Community Contributor Award Recipient

 
 

Another amazing tutorial Shawn, Thanks.
Derek
My System SpecsSystem Spec
03 Apr 2010   #3
Brink
Microsoft MVP

64-bit Windows 10
 
 

Thank you guys, and you're both most welcome.

From what you had posted here Antonio, I had just picked it up from there to make it easier for everyone to do. There's all sorts of training available out on the net for programming and scripting, but I'm afraid that I'm not much of a programmer and do not have anything that I could recommend.
My System SpecsSystem Spec
.


04 Apr 2010   #4
juanantoniod

Microsoft Windows 7 Home Premium 32-bit 7601 Multiprocessor Free Service Pack 1
 
 

Brink,

Thanks for the reply. As I said, I appreciate the great formatting job you did with the instructions. Did you use HTML, or another language or something else? THAT is what I would like to learn. As well, I would like to learn a common programming language, but I do not know where to start. Is Visual Basic a good place to begin learning application programming?

Best,

~Antonio
My System SpecsSystem Spec
04 Apr 2010   #5
Brink
Microsoft MVP

64-bit Windows 10
 
 

I had just used the built in BB codes for vBulletin that's based on HTML.

Vista Forums - BB Code List
My System SpecsSystem Spec
23 Aug 2011   #6
Laurus12

Windows 7 Home Premium 64 bit
 
 

Thank you very much for this one too Brink

By the way. I miss a "Thanks" button for posts in the forum.

Laurus
My System SpecsSystem Spec
23 Aug 2011   #7
Brink
Microsoft MVP

64-bit Windows 10
 
 

You're most welcome Laurus.
My System SpecsSystem Spec
11 Dec 2011   #8
kathleen956600

Windows 7 Home Premium 64bit
 
 

It doesn't work for me
My System SpecsSystem Spec
11 Dec 2011   #9
Brink
Microsoft MVP

64-bit Windows 10
 
 

Hello Kathleen, and welcome to Seven Forums.

Could you give more details and screenshots of what you are trying to do and what's not working with it?
My System SpecsSystem Spec
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