How to Change the Login Background on Mac High sierra


Many Mac users have a question that how to change the background screen on Mac. Because every update introduces the new method to change it. Here I am going to tell you how to change the login background on Mac OS High Sierra.
How to change the login background on Mac?

  1. Open Finder.
  2. Select Go->Go To Folder.
  3. Enter /Library/Caches in the pop-up box and then click “Go”.login background screen high sierra
  4. Caches window will appear. There you can see the file com.apple.desktop.admin.png which is the current login screen.login screen blurry high sierra
  5. Copy the photo that you want to set as login background and paste it in caches window. Give a name to this image as login background.
  6. Open the current login background image com.apple.desktop.admin.png.
  7. Click Show markup Toolbar icon and then click Adjust Size icon.
  8. Note the Width, Height, and Resolution.
  9. Now open the image that you have selected to set for login screen.
  10. Click Show markup Toolbar icon and then click Adjust Size icon.
  11. Enter the Width, Height, and resolution that you have noted from the current login background and then click “OK”.change login screen high sierra
  12. Go to Edit->Save.
  13. You can see the name of this image that login background copy (you can’t replace the original image). You can also give a new name for this image.change login background mac
  14. Select the location to save this image.
  15. Select the format PNG and then click “Save”.
  16. Now copy the saved image and paste it on Caches window.
  17. Delete the current login background image com.apple.desktop.admin.png.
  18. Change the name of the saved image (login background copy) as com.apple.desktop.admin.png.
  19. Quit Caches window and log out of your mac.
  20. Now see your login background screen.

SEE ALSO: How to Change the User Picture on Mac High Sierra
You can use another way to change the background screen

  1. Click anywhere on the screen of your Mac.
  2. Click “Change Desktop Background”.change background high sierra
  3. Select “Desktop” tab.change login screen high sierra
  4. Select the picture that you want to set up for login background screen.

Note: If you use this method, you will get the only blurry background.
If you have any other doubts related to this post, let us know through your comments.

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