Generating animated PNG files with numpngw

I needed an apng viewer plug-in for Chrome


Sterling, thanks for trying it out, and for pointing out the animated PNG
plugin for Chrome.


P.S. I changed the mailing list group from the old sourceforge list to
matplotlib-users at I sent my first email to the sourceforge list
because that's what showed up first when I searched for "matplotlib-users
mailing list".


On Fri, Nov 13, 2015 at 5:13 PM, Sterling Smith <smithsp at> wrote:

On Nov 13, 2015, at 1:31PM, Warren Weckesser <warren.weckesser at> > wrote:

> Matplotlib users,
> I just put the package "numpngw" up on pypi:
> The development version is on github:
> The reason this might be of interest to maplotlib users is the class
"numpngw.AnimatedPNGWriter". This class can be used as the "writer"
argument of the "save" method of the Animation class. So if you've ever
wanted to use matplotlib to create an animated PNG (and who hasn't?), now
you can!
> If you go to the github page, scroll down to Example 8 to see an example
of how to save an animation as an animated PNG. You'll need a browser that
supports animated PNG to actually see the animation. Firefox does, Safari
doesn't, and I haven't checked any others.
> If you use it and find problems or have suggestions for improvements,
email me or create an issue on github.
> Warren
> _______________________________________________
> Matplotlib-users mailing list
> Matplotlib-users at

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