XP vs 10 - Wallpaper rendering

Discussion in 'Windows 10' started by MrMagic, Nov 2, 2016.

  1. MrMagic

    MrMagic MDL Guru

    Feb 13, 2012
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    #1 MrMagic, Nov 2, 2016
    Last edited: Nov 2, 2016
  2. GOD666

    GOD666 MDL Expert

    Aug 1, 2015
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    #2 GOD666, Nov 3, 2016
    Last edited by a moderator: Apr 20, 2017
    You're not wrong! Windows 10 has a feature that optimizes the desktop wallpaper to a compressed image for quicker loading at boot (so they claim). Someone on here added this cool little tweak that disables that compression and thus renders the image in the full quality (just as it did in Windows XP).

    Open cmd as admin and run this.
    Code:
    reg add "HKCU\Control Panel\Desktop" /v "JPEGImportQuality" /t REG_DWORD /d 100 /f
     
  3. Carlos Detweiller

    Carlos Detweiller MDL Spinning Tortoise

    Dec 21, 2012
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    #3 Carlos Detweiller, Nov 4, 2016
    Last edited: Nov 5, 2016
    Not only Windows 10. All Windows since Vista transcode/compress the Wallpaper to 80%/85% quality. However, only under Windows 10 it is configurable.
     
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  4. Flipp3r

    Flipp3r MDL Expert

    Feb 11, 2009
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    Yes, GOD666 is correct. By default a compressed version is displayed.
    Can't confirm if the reg works as I don't care! :)
     
  5. GOD666

    GOD666 MDL Expert

    Aug 1, 2015
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    You need to reboot for it to take effect (or at the very least restart explore.exe). But honestly, if you're using a good 1080p display with a good 1080p photo that isn't already compressed, you'll likely not notice any difference.

    The folks who do notice the difference is if the photo was already pre-compressed in which case Windows came along and compressed it a 2nd time which degraded the image. Or if you have something better than 1080p (4k perhaps), I've been told you notice it there too.

    The above tweak basically tells Windows to leave the imagine alone at 100% quality, uncompressed, and untouched from being optimized (which is exactly how Windows XP did it).