PNG showing up with black background

From Illustrator at 300 dpi, export to png and check "Use Artboards" that solved the problem for me 🙂

Open the file in Photoshop and resave making sure to turn off interlacing.

In my case same thing happened with Acrobat Pro. It was due to bit-depth. I increased it from 8 to 32 and now it works!

Had the same problem when importing .png into Illustrator. Solved it by exporting my file to PNG-24 instead of PNG-8.

I had the same problem. What fixed it for me was opening it in photoshop and making sure the color mode was set to RGB and not Indexed Color.

Try double klicking on your "background" layer in your layers palette, to make it into a layer, layer 0 by default. You shouldn't have any proplems after that.

Hope it helps!

Solved:

1. Open in Photoshop

2. Image > Mode > RGB / CMYK

3. Save

Seems that Indexed Colors were causing the problem on my end.

I found solution where I was having the same problem on browsers.

Problem at my end:

I was creating a transparent png's with image editor for web but in internet browsers it was showing a black background instead of transparent background.

Solution as per:

I find problem in my css file. Please check 'img' class in css modify or delete. it will remove the background.

Cheers!

Arsalan

I know this is an old thread, but I just came across this problem and found a different solution that I thought I would share just in case it helps someone else.

I used the same custom png button with a transparent background (made in fireworks) for more than 50 projects with no problem.  Suddenly, the black background (with a white border) that others mentioned appeared on the 56th project but only after it was published.  It all appeared fine in the workspace.  None of the solutions above would work.

my solution:  I just merged the image button into the background and then placed a transparent button over it to create the action that I needed.  Hope that helps someone in the future!

In my experience, Captivate 3 seems to interpret the transparency in an image as black if the file size is large.  It seems to happen in the resizing compression.  There are two ways I have found to overcome this:

1.       The most effective is to reduce the file size to less than 100kb.  For most Captivate projects this still offers a good quality resolution in PNG format.

2.       Using PhotoShop, lock the transparency then save the file again.  If the save was previously interlaced then choose the opposite (none) this time – reverse if interlaced previously.  Then reimport the file.  This is not always effective but for some quirky reason, sometimes it works.  It will not work with very large files but seems to work with stubborn smaller PNG files, where Captivate is interpreting transparency as black.

I hope this is of assistance to you.