You are correct. The thumbnail version upon upload is indeed a JPG. Upon
saving and displaying on web page, it shows as being converted back into a
PNG. Screen capture attached to document that JPG is indeed the file type.
Many thanks for your fast replies. All the best with this bug.

Regards - James

On 1 March 2016 at 13:34, Hachmann <email address hidden> wrote:

> In that case, it probably *is* a jpg. To do a final verification, please
> do this in your browser:
>
> - right-click on the image
> - select 'show graphic info' in the context menu
> - Does it still say it's a jpg? Then it *is* a jpg.
>
> What I think is that the Shopify person's comment was maybe referring to
> another picture size, not to this thumbnail size.
>
> When they resize, they will probably use the jpg format, which, because
> of the mentioned transparency bug in Inkscape
> (https://bugs.launchpad.net/inkscape/+bug/1430716), converts to a black
> background instead of white.
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1551479
>
> Title:
>   V 0.91 Transparency Loss / Corruption
>
> Status in Inkscape:
>   New
>
> Bug description:
>   V0.91
>   W8.1
>   64 bit
>
>   Please see the posts at the following link:
>
>   http://www.inkscapeforum.com/viewtopic.php?f=5&t=22521&p=81315#p81315
>
>   ISSUE:
>
>   PNGs properly saved and exported from V 0.91 with all Alpha channels
>   set to 0 and then uploaded to Shopify repeatedly show with no
>   transparency / black abstract colouring.
>
>   PNG as  test file from http://tavmjong.free.fr/INKSCAPE/MANUAL/html
>   /File-Export.html in V 0.47 or 0.48 when uploaded to Shopify appears
>   normal with full transparency / no corruption.
>
>   When above test file is saved, opened in V 0.91, then saved and
>   exported as a PNG with all Alphas at 0, and is then uploaded to
>   Shopify as a V 0.91 file, all transparency is lost / black abstract
>   colouring appears.
>
>   FINDINGS
>
>   Inkscape V 0.91 PNG files uploaded to Shopify are not transparent.
>   Large number of other postings on other forums strongly suggest
>   problem applies to many other sites.
>
>   CONCLUSION
>
>   Bug exists in V 0.91 causing loss of transparency with PNGs when
>   uploaded to numerous websites especially Shopify; fully tested on
>   Shopify; proof being that earlier version test file works fine, but
>   when converted to a V 0.91 file, corruption appears.
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/inkscape/+bug/1551479/+subscriptions
>



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