Photoshop: PNG has black background after Image/Trim since new update

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  • Updated 6 days ago
  • (Edited)
I always trim my products to save disk space but the last couple of days when I trim something I get a black background with a png file.

I went back in and trimmed it again (it didn't trim anything) but when I closed it and reopened it the black background was gone. 

Here is my original post:

https://feedback.photoshop.com/photoshop_family/topics/png-now-sometimes-saves-with-a-black-background?utm_source=notification&utm_medium=email&utm_campaign=new_comment&utm_content=reply_button&reply[id]=20177205#reply_20177205


Julie 
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Julie Stiltner

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Posted 3 weeks ago

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Cristen Gillespie

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It looks like this might be a Windows problem with either their latest update, or PS and its latest update. I'm on a Mac, and of the participants in the thread, I'm not seeing this issue at all now.
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Rosa

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I am experiencing the same problem as well. When viewing my trimmed png files through Photoshop, the png files have a black background. Some of my purchased png files when view through Photoshop also have a black background. I have to open the file in Photoshop and re trim, save, to get rid of the background when viewing through Photoshop

I only noticed this after the latest Photoshop update 20.0.5 but at the same time Windows updated to version 1903 so I can't pinpoint which program is responsible.

My Driver is up to date.
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Jeffrey Tranberry, Sr. Product Manager, Digital Imaging

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I cannot reproduce this with Save As, Export As, or Save for Web.

My steps are:

1. New transparent document
2. Paint a bit
3. Image > Trim
4. Use either Save As, Export As, or Save for Web to save a PNG file
5. Close the document
6. File > Open... and examine the thumbnail for the file you just saved.

I've not been able to save a file with a black background.
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Julie Stiltner

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I know because there is no rhyme or reason to it.  I have no clue why it does it, but I am not the only one who has had this problem. 
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Rosa

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Julie  - I think it's a Windows thing.

Also, I found by moving these files to a new folder, that they've gone back to normal. So didn't have to use Photoshop at all.
(Edited)
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Rosa

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Jeffrey Thanks so much for responding.

I need to clarify -

The .png file saves as a .png file should, with a transparent background, whether I use Save As, Export As, or Save for Web. The image retains its transparency as it should.

It's only when viewing some thumbnails which are actually transparent .png images through File Explorer via Photoshop that these images have a black background but I don't think Photoshop is responsible. I think it's a problem with File Explorer.

I've gone through and viewed the majority of my transparent images with File Explorer and actually have found about a dozen of my transparent files have a black background. Opening them up in Photoshop they're still transparent, which shows that there must be a glitch with File Explorer.

Re-saving these files as transparent png, gets rid of the problem so you don't see the black background, instead you see the transparency as it should.

I honestly think this issue arose after Windows 1903 Update as I had not seen this issue prior to the update.

But having the Windows 1903 Update and Photoshop 20.0.5 confused the issue with me. 















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Julie Stiltner

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I agree, that I also never had the problem until the Windows update.   However, I have downloaded items that others have made and many of them have a black background. I can't really say it is Windows, but it very well could be. 
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Rosa

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I went into a folder which I had saved a lot of items to use in a composite story and in this folder there were 3 png files which had black backgrounds.

I cut these files and pasted them into an empty folder which then got rid of the black background, then cut these same files and pasted them back into the original folder and the black background has gone. 

So I did this without using Photoshop which makes me think it's a Windows/File Explorer problem. 

Then I found this:
https://www.reddit.com/r/Windows10/comments/8ah07d/my_every_png_file_thumbnail_background_is_black/
(Edited)
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Julie Stiltner

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Wow, you really did your research Rosa!  LOL

I went to the link and did the disc cleanup as suggested, thank you!
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Rosa

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Thanks Julie. Sometimes I try to figure things out myself but still would like answers as to why?  Sometimes that never happens :D 
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Julie Stiltner

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Well seeing as this is clearly a Windows problem, I'm sure that is why no one here knew the answer. But Kudo's to you for getting to the bottom of it :D