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Converting jpegs to pngs

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Converting jpegs to pngs 127markaz 07 Jun 02:32
  Converting jpegs to pngs scl 07 Jun 03:25
   Converting jpegs to pngs Alvin Hikmawan S.Psi. 07 Jun 05:45
  Converting jpegs to pngs Michael Schumacher 07 Jun 05:57
   Converting jpegs to pngs 127markaz 07 Jun 14:12
    Converting jpegs to pngs Michael Schumacher 07 Jun 15:06
2013-06-07 02:32:30 UTC (over 11 years ago)
postings
15

Converting jpegs to pngs

It used to be that I could take any ,jpg file, then save it as a .png so that I would have a transparent background in order to render the pic. Now, for whatever reason, when converted the background remains white. What setting has changed that I can no longer get a transparent background after the .png conversion? Gimp V. 2.6.8.

scl
2013-06-07 03:25:31 UTC (over 11 years ago)

Converting jpegs to pngs

Am 07.06.13 04:32, schrieb 127markaz:

It used to be that I could take any ,jpg file, then save it as a .png so that I would have a transparent background in order to render the pic. Now, for whatever reason, when converted the background remains white. What setting has changed that I can no longer get a transparent background after the .png conversion? Gimp V. 2.6.8.

Hi,

the current GIMP version is 2.8.4. Can you try again with that version and tell us about your results?

Kind regards,

Sven

Alvin Hikmawan S.Psi.
2013-06-07 05:45:28 UTC (over 11 years ago)

Converting jpegs to pngs

What about the PNG's setting (dialog box that appear, before saving). Can you attach the screenshoot from that dialog box? Maybe we can analyzing from that setting. On Jun 7, 2013 10:25 AM, "scl" wrote:

Am 07.06.13 04:32, schrieb 127markaz:

It used to be that I could take any ,jpg file, then save it as a .png so that I
would have a transparent background in order to render the pic. Now, for whatever reason, when converted the background remains white. What setting has
changed that I can no longer get a transparent background after the .png conversion? Gimp V. 2.6.8.

Hi,

the current GIMP version is 2.8.4. Can you try again with that version and tell us about your results?

Kind regards,

Sven

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Michael Schumacher
2013-06-07 05:57:23 UTC (over 11 years ago)

Converting jpegs to pngs

127markaz wrote:

What setting has changed that I can no longer get a transparent background after the .png conversion? Gimp V. 2.6.8.

Make sure that the image has an alpha channel and that there are transparent parts before exporting.

Regards, 
Michael
2013-06-07 14:12:54 UTC (over 11 years ago)
postings
15

Converting jpegs to pngs

127markaz wrote:
Make sure that the image has an alpha channel and that there are transparent parts before exporting.

That was it! In checking while saving as a .png, the save transparent pixels was grayed out. Took the original .jpg and clicked on Layers > Transparency > Add alpha channel and erased some of the background to confirm. No more white....only transparency. In all these years I suppose I've been lucky with the many .jpg pics I've rendered because I've never encountered this before.

I can't begin to thank everyone for your rapid responses and helping me learn something and resolving this perceived "problem".

Again, thank you very much.

Mark

Michael Schumacher
2013-06-07 15:06:53 UTC (over 11 years ago)

Converting jpegs to pngs

127markaz wrote:

In all these years I suppose I've been lucky with the many .jpg pics I've rendered because I've never encountered this before.

That would be strange, because the JPEG file format has no transparency.

Regards, 
Michael