transparent PNG images with white background

hi23469

Hi there,

Does anyone knows why the transparent uncompressed PNG images appear with a white background?
I have a behaviour of Change image with jpgs and transparent pngs.

Armelline

They need to be PNG-24, not PNG-8.

hi23469

Thanks Armelline. I have also tried with Photoshop: save for web, png, 24 bit,but had no luck. The weird thing is that the images were appearing with transparent background and only stopped working after I deleted the unused ones.

AlchimiaStudios

Never seen that issue. With save for web are you making sure the transparency box is checked?

Maybe because some images are jpegs it's interpreting the rest incorrectly?

hi23469

thanks. They're all PNGs...

Bunker

I've had issues where I've forgotten to set-up the output of my paint program before

In the preferences for the paint app - there's usually an option to set the default background of images to transparent or white.

Made an entire sprite folder once with around 50 images ... all white backgrounds! why!!

Are you using your usual computer? / new art program etc?

Armelline

Can you post an example image?

hi23469

thanks. yes, all images have transparency on. Although I exported all png with 24 bits i just noticed windows 10 image details is telling me some images have 32 bit. will try to fix that and see if it works.

Twayne2

When I want transparency I go to online image editor and add it there. It works like a charm.

PhilipCC

@hi23469 It was mandated back in 2015 that all images imported into GS should be 24bit or 32bit PNGs.

Transparency is not supported in a JPG.

If you import JPGs, GS will convert them to PNGs anyway, but they won't be transparent.

In some graphic programs you can convert JPGs to PNGs, but you must specifically map a colour from the palatte to be transparent, say the background colour.

Check this older thread in which there is info that is still relevant today.

http://forums.gamesalad.com/discussion/76342/convert-graphics-to-png-on-mac-with-preview#latest

rainwaterstudios

@hi23469 said:
Hi there,

Does anyone knows why the transparent uncompressed PNG images appear with a white background?
I have a behaviour of Change image with jpgs and transparent pngs.

I've encountered this problem on several occasions; after some hair-pulling and a lot of experimentation, I was able to get the PNG's to display with the correct transparency by changing the actor's 'Alpha' (under 'Color') attribute to .99.

hi23469

Thanks Rainwater. Have tried it also before but didnt worked.

Rogue Anvil

Hi, are you sure you have actually exported your PNG-24 with some transparancy?

For instance, in photoshop you have to delete the default "background" layer at the bottom of the layers (then you can see the checker board indication in stead of a background color) in order to get transparancy in the file - then import it into GS.