Personalization Disable Desktop Wallpaper JPEG Quality Reduction in Windows 11


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Desktop_background_banner.png

When you set an image as your desktop background wallpaper or slideshow, Windows will import a copy of this image and store it as the TranscodedWallpaper file in the %AppData%\Microsoft\Windows\Themes folder. Your desktop background wallpaper is loaded from this TranscodedWallpaper file cache.

If you select a JPG or JPEG image as your desktop background wallpaper, then Windows will automatically compress and reduce the quality of the imported copy to only 85% of the original JPG/JPEG image quality. This is done to help save disk space, RAM, and improve the performance of Windows while showing the desktop wallpaper image or when cycling wallpaper images during a desktop slideshow. Of course, the JPEG desktop wallpaper will not look as good as the original.

If you have a decent performing system, then you may wish to disable this automatic quality reduction of JPEG desktop wallpapers to have the imported image show with the full quality as the original JPEG image.

This tutorial will show you how to enable or disable the automatic import quality reduction of a JPG or JPEG desktop wallpaper for your account in Windows 10 and Windows 11.


The automatic quality reduction only applies when using a JPG or JPEG image as your desktop background wallpaper.



EXAMPLE: TranscodedWallpaper file cache for desktop background wallpaper

TranscodedWallpaper.png



Here's How:

1 Do step 2 (enable) or step 3 (disable) below for what you would like to do.

2 Enable Desktop Wallpaper JPEG Quality Reduction

This is the default setting.


A) Click/tap on the Download button below to download the file below, and go to step 4 below.​

Enable_JPEG_Desktop_wallpaper_import_quality.reg


(Contents of REG file for reference)
Code:
Windows Registry Editor Version 5.00

[HKEY_CURRENT_USER\Control Panel\Desktop]
"JPEGImportQuality"=-

3 Disable Desktop Wallpaper JPEG Quality Reduction

A) Click/tap on the Download button below to download the file below, and go to step 4 below.​

Disable_JPEG_Desktop_wallpaper_import_quality.reg


(Contents of REG file for reference)
Code:
Windows Registry Editor Version 5.00

[HKEY_CURRENT_USER\Control Panel\Desktop]
"JPEGImportQuality"=dword:00000064

4 Save the .reg file to your desktop.

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

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

7 Restart the computer to apply.

8 Change your desktop background wallpaper to the JPEG file you want to import a new copy for your applied changes.

9 You can now delete the downloaded .reg file if you like.


That's it,
Shawn Brink


 

Attachments

  • Desktop_background.png
    Desktop_background.png
    16.7 KB · Views: 11
  • Disable_JPEG_Desktop_wallpaper_import_quality.reg
    594 bytes · Views: 27
  • Enable_JPEG_Desktop_wallpaper_import_quality.reg
    564 bytes · Views: 32
Last edited:

SM03

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if I wanna use the wallpaper without any quality loss, then which one should I use?
This?
Disable Desktop Wallpaper JPEG Quality Reduction
[HKEY_CURRENT_USER\Control Panel\Desktop]
"JPEGImportQuality"=dword:00000064
 

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Brink

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if I wanna use the wallpaper without any quality loss, then which one should I use?
This?
Disable Desktop Wallpaper JPEG Quality Reduction
[HKEY_CURRENT_USER\Control Panel\Desktop]
"JPEGImportQuality"=dword:00000064

Hello mate, :alien:

Correct. That would be the one to use to not lose any quality when using a JPG or JPEG file as your desktop background.

You don't lose quality with any other image file type (ex: PNG).
 

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Rahulji

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What about JPEG and PNG and BMP format? What is the best to use? thanks
 

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Brink

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What about JPEG and PNG and BMP format? What is the best to use? thanks

PNG is usually the best quality when it's the same size as your screen resolution.
 

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    ASUS ROG Maximus XI Formula Z390
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    2 x Samsung Odyssey G75 27"
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    Motorola MB8611 cable modem,
    APC SMART-UPS RT 1000 XL - SURT1000XLI,
    Galaxy S20 Ultra 5G phone
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abactuon

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What is in the folder "C:\Users\SomeOne\AppData\Roaming\Microsoft\Windows\Themes\CachedFiles\CachedImage_1920_1080_POS0.jpg" ?
In the cache :
cf.jpg


Source :
tf.jpg


r.jpg
 
Last edited:

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