Photoshop: PNG now sometimes saves with a black background

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Ever since I updated to the newest version of Photoshop a few weeks ago some of my .png documents are saving with a black background, and some are not. 

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Julie Stiltner

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Posted 1 year ago

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Cristen Gillespie

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Interesting. I saw that a while back in Bridge from PNG files I received from designers sometimes having that black background displayed in Bridge. I resaved in PS to get rid of it.

I haven't had time to test saving PNG files in PS since the update. I'll keep an eye on it going forward now, though. But is this only as displayed in Bridge and PS recognizes they're transparent? If that's the case, it's a Bridge issue returned, though I never did find out why back when I was seeing this often in Bridge.

Can you find any difference at all between the structure of the files? Alpha Channels, for instance?
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Julie Stiltner

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There is no difference and I do not use Bridge.  I open and save all of my files through Photoshop.  

I have also seen them from others designs, but this is the first time it has done it to me.  Those elements were all made within minutes of each other and some have a white background, and some a black one.
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Cristen Gillespie

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That's right. Sorry, I forgot you never use Bridge for anything at all. So where are you viewing them? In Windows Explorer? I trust at least that transparency is preserved.

No matter what you use to display them, it's a puzzle that they should be saving from the same software, same session, such that they display so very differently. Maybe we'll get lucky and someone on the PS team will see this and have a thought. Since it's happened before to both of us (which must translate at least to thousands of others<G>), surely someone at Adobe has tried to figure out why.

One other thought. What are you using to export the PNG files? SFW, Quick Export As, full dialog Export As. . . , exporting through the Layers menu or the main menu? I'm wondering if a glitch got introduced into one of the export features. Or even just Save As. . .
(Edited)
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Julie Stiltner

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Hi Cristen,

I have never had this happen to me before, but I have seen it with others stuff I have downloaded.  

Yes, it does save the transparency, and I save them via File/save as
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Julie Stiltner

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It's a bug in the trim process.  I always trim my products to save disk space, but I went back in and trimmed it again (it did nothing) but when I closed it and reopened it the black background was gone. 

Try it and let me know if it works for you.
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Rosa

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Julie, when you open that saved png file with a black background in Photoshop, does that saved png file open with a transparent background in Photoshop?
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Rosa

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I did Julie and I'm finding that a majority of my png files viewed through Photoshop have black backgrounds.

Also at the same time as the Photoshop update, my Windows updated to version 1903

So, not sure who the culprit is. :-D
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Julie Stiltner

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Good point Rosa, I never thought of that.  I also did a Windows update.
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Rosa

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After the Windows update and the Photoshop update, Photoshop became quite sluggish. Somehow Photoshop became good, so not sure what or which program was responsible for that issue. 

But it's seriously annoying now to see the majority of my png files with a black background when viewing through Photoshop. Even my purchased png files are now showing on black backgrounds through Photoshop. 

Julie, as Christen wrote, maybe you can now create a new post as a 'bug' with your findings — referring to this thread? 

I think it's worth it. Oh and just for the record, my graphics driver is up to date.



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Cristen Gillespie

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> maybe you can now create a new post as a 'bug' with your findings — referring to this thread?

Anyone can add their findings to the bug Julie logged in the first place. It helps Adobe a lot if you all keep this under the same bug and don't let it get scattered among multiple separate threads. It is, after all, the same bug, and they're also looking for Me Toos. You can always do a search on her name and under Advanced, narrow the field of responses, but I went ahead and did it for you.

https://feedback.photoshop.com/photoshop_family/topics/bug-with-image-trim-since-new-update

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Rosa

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Thanks Cristen