Question

Whenever a user uploads a photo using my script, WideImage converts it to JPEG. However, I just noticed that if I upload a PNG picture, with a transparent background, it makes it black instead.

Is there any way to make this white instead?

This is how i save the image:

$img->resizeDown('500', null)->saveToFile('annonce_billeder/'.$bnavn.'.jpeg', 70);

Answer 1

Not really directly. You wnt to read about how transparency is stored in pictures: it is an ordinary color value (any color) that has been marked especially as transparent.

So most likely the color specified in the example pictures you try actually is coded as black and the transparency gets lost whilst converting.

You might have a try to find out if you can detect if there is a color marked as transparent in the incoming picture and then manually change that color to non-transparcy and white before converting the picture.