Among other Windows Operating System (OS) version, Windows 10 (ONLY Windows 10) come with workaround to disable built-in feature to auto compress wallpaper image. Auto compression helps in saving valuable disk space and improves performance, but this degraded Wallpaper image quality. You may not aware that this feature appeared in Windows 8 and Windows 7, but not workaround available.
Before your desired picture become your desktop wallpaper, Windows 10 automatically compresses your wallpaper images and reduces it to 85% of the original image quality. This process is extremely useful for PCs / laptops with moderate to low specifications. If your machine have enough RAM and processing speed, you can disable the wallpaper compression in Windows 10.
How to find the image after 85% compression
Windows 10 never actually applies the full quality image to the Desktop Wallpaper. It reduces the quality so as to enhance the system performance. There is no GUI settings to disable the wallpaper quality reduction in Windows 10, but a registry fix or amend the registry can help you disable this automatic compression feature.
When we set an image as desktop wallpaper, Windows 10 actually converted image as a TranscodedWallpaper file and keep inside the directory
- Copy the existing TranscodedWallpaper
- Paste at the same directory
- Rename the copied image as TranscodedWallpaper.jpg
- Double click on it.
This is your image after the 85% of compression.
Steps to Disable Windows 10 Wallpaper compression
With this registry fix, you can disable automatic wallpaper quality reduction feature and improve the quality of your desktop background wallpaper.
- Click Start (Windows Logo)
- Type regedit > Hit Enter
- Navigate to HKEY_CURRENT_USER\Control Panel\Desktop
4. Right Click Desktop > New > DWORD (32-bit) Value > name it JPEGImportQuality
Note: Even if you are running 64-bit Windows, you still need to create a 32-bit DWORD value.
The value lies between 60 and 100. As default compression is 85%, thus, default value is 85. A value of 100 indicates a very high-quality wallpaper with no compression. Set the value to 100. Click OK and exit.
5. Restart your computer.
Now, you can try set a new image as wallpaper. It will be displayed without compression. This fix only applicable to Windows 10 family only.