Re: SVG to PNG

PS. a small typo: I meant SVG 2.0

Am Mo., 9. Nov. 2020 um 17:02 Uhr schrieb Pro Turm <[email protected]>:

> Thanks for answering.
>
> >  improving support for SVG 1.1 and adding a few missing features such as
> support for radial gradients
> Is there any reference of which are the implemented vs. the missing
> features? How about SVG 1.2 ?
>
> > The GraphicsMagick delegates subsystem can support using an external SVG
> renderer if the user desires that.
> Could you provide some examples or documentation about it?
>
> Regards,
>
> Am Mo., 9. Nov. 2020 um 15:21 Uhr schrieb Bob Friesenhahn <
> [email protected]>:
>
>> On Mon, 9 Nov 2020, Pro Turm wrote:
>>
>> > Does Graphicsmagick support a flawless conversion from SVG to PNG ?
>>
>> It does a good job with many SVGs, but not with some others.  Notice
>> that there is no warranty. You are responsible for the results (good
>> or bad).
>>
>> One thing that GraphicsMagick definitely does not do is to download
>> font files via a url from the "web" (e.g. the popular Google fonts).
>>
>> There is not currently https download support for downloading
>> referenced content via https urls (only http is supported).
>>
>> > I have to decide which package is most suitable for this issue.
>> >
>> > So far, Ive observed people using inkscape, librsvg etc.
>>
>> Inkscape uses a modified/extended SVG format as its native format.
>> If the SVG was written by Inkscape (popular under Linux), then no
>> program will do better at rendering its SVG than Inkscape.
>>
>> ImageMagick often depends on librsvg for its SVG rendering.
>>
>> I have been working for many years to make the MVG rendering code
>> (inherited from ImageMagick) in GraphicsMagick more robust.
>> GraphicsMagick translates SVG into its own simplified MVG rendering
>> requests prior to rendering.  MVG is included in the oss-fuzz testing
>> and issues discovered by oss-fuzz have informed my efforts.
>> Previously there was fuzz testing performed at the SVG level.
>>
>> At this time, SVG support is suitable for trusted files, but the
>> renderer is not designed to be used on untrusted files behind a
>> firewall.
>>
>> This past weekend, I observed faster rendering performance with
>> GraphicsMagick's SVG renderer than I was observing with
>> ImageMagick+librsvg.
>>
>> We could use a capable volunteer to help maintain the SVG rendering
>> support and particularly for improving support for SVG 1.1 and adding
>> a few missing features such as support for radial gradients.  The SVG
>> gradients have become very powerful and GraphicsMagick does not yet
>> support the new capabilities.
>>
>> The GraphicsMagick delegates subsystem can support using an external
>> SVG renderer if the user desires that.  It is not necessary to abandon
>> GraphicsMagick in order to use a different renderer.
>>
>> Bob
>> --
>> Bob Friesenhahn
>> [email protected],
>> http://www.simplesystems.org/users/bfriesen/
>> GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/
>> Public Key,
>> http://www.simplesystems.org/users/bfriesen/public-key.txt
>>
>>
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>>
>

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