Windows 10: Disable Desktop Wallpaper JPEG Quality Reduction in Windows 10  

    Disable Desktop Wallpaper JPEG Quality Reduction in Windows 10

    Disable Desktop Wallpaper JPEG Quality Reduction in Windows 10

    How to Enable or Disable JPEG Desktop Wallpaper Import Quality Reduction in Windows 10
    Published by Category: Customization
    13 Mar 2017
    Designer Media Ltd

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    Posts: 20,838

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    How to Enable or Disable JPEG Desktop Wallpaper Import Quality Reduction in Windows 10

    information   Information
    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 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 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 JPEG desktop wallpaper for your account in Windows 10.

    Note   Note
    If you use a PNG image as your desktop background wallpaper or slideshow, then you are not affected by this automatic quality reduction since it only happens to JPEG images.



    Here's How:
    Note   Note
    The .reg files below will add and modify the DWORD value in the registry key below.

    HKEY_CURRENT_USER\Control Panel\Desktop

    JPEGImportQuality DWORD

    (delete) = Enable JPEG import quality reduction
    64 (hexadecimal) = Disable JPEG import quality reduction



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


     2. To Disable JPEG Desktop Wallpaper Import 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

    download


     3. To Enable JPEG Desktop Wallpaper Import Quality Reduction

    NOTE: 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

    download

    4. Save the .reg file to your desktop.

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

    6. If prompted, click 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



  1. Posts : 14,977
    Microsoft Windows 10 Pro 64-bit 14393, Windows 10 Insider Fast Ring, Windows 8.1 Update, Ubuntu
       04 Oct 2016 #1

    Thanks for the info Shawn, I posted your info and note boxes in the wallpaper thread, for the other paper geeks: User Created Windows Ten Wallpapers [2] - Page 188 - Windows 10 Forums
      My ComputersSystem Spec


  2. Posts : 20,838
    64-bit Windows 10 Pro build 16199
    Thread Starter
       04 Oct 2016 #2

      My ComputersSystem Spec

  3.    05 Oct 2016 #3

    question :

    I saw above the word "import"

    so , this tweak matter only on new future installed wallpapers
    or is in fact applied also on the existing wallpaper
    maybe after a restart or not ?

    [ I suppose the actual wallpaper is already imported somewhere in user folder cache]

    c
      My ComputerSystem Spec


  4. Posts : 20,838
    64-bit Windows 10 Pro build 16199
    Thread Starter
       05 Oct 2016 #4

    Hello C,

    It gets applied to the next new wallpaper you change to after a restart.
      My ComputersSystem Spec


  5. Posts : 1,511
    Win-7Prox64 Win-8.1Prox64 Win-10Prox64
       13 Mar 2017 #5

    Sweet
      My ComputerSystem Spec


 

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