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K
k_5099
Participant
March 28, 2025
Question

A halo / fringe or not?

  • March 28, 2025
  • 2 replies
  • 831 views

I am new to photoshop. I have an image which I removed the background. After removing the background I added a black layer to check the background was removed ok and there were no stray white edges and it appeared correct in photoshop so I saved as a PNG. When looking at the folder where the PNG is stored it looks like there is a white halo surrounding it - but I cannot see it in photoshop. Any ideas why it looks like it has white edges in the desktop folder? Thanks!

2 replies

Trevor.Dennis
Community Expert
Trevor.DennisCommunity Expert
Community Expert
March 28, 2025

Your attached PNG is OK.  No halo at all.  

I turned on the bounding box to show that the 'A' has no content outside of what it should have.

I don't know if it is a clue, but the PNG has a transparent border beyond the A.

The bottom line is that the graphic is fine, and has no actual halo.

K
k_5099Author
Participant
March 29, 2025

@Trevor.Dennis  thank you for checking. Really appreciate it 😊

CMass
CMass
Legend
March 28, 2025

Hey @k_5099!

Try Layer > Matting > Defringe to remove edge pixels. Let me know if that helps. 

^CM

K
k_5099Author
Participant
March 28, 2025

Hi @CMass  thanks for responding 🙂 I tried that and saving but when I look at the folder where I saved the image as a PNG it still looks like there is a white line outside the letter - but I find that hard to believe since when I removed the background I removed a fex pixels and then I also used the contract feature to remove a pixel or two and now the matting defringe feature. 

 

When looking at the image with a black background I don't see a halo/edge, it's only when I see it in the desktop folder, before opening (see screen shot). Any ideas?

BrettN
Community Manager
BrettNCommunity Manager
Community Manager
March 28, 2025

Not sure how the OS generates the thumbnails, but I'm guessing that it sees the semi-transparent pixels in the image, is matting them with a white background so that they are fully opaque (leaving the fully transparent pixels alone), creating this white halo, even though the file itself looks correct when viewed in Photoshop

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