I saw that 1.13.1+ds-1 is available on Salsa but it seems it was never
uploaded to Debian?
In the mean time, upstream released version 1.14.1.
One change that looks particularly interesting to me is from:
https://codeberg.org/dnkl/fuzzel/pulls/650
"Faster, Featureful SVG renderer with gamma support: resvg"
From that PR are the following quotes:
"resvg passes substantially more SVG tests than librsvg, which in turn
had better support than nano SVG."
"13x faster than librsvg, 2x faster than nanosvg"
"Yet another reason resvg might replace the other two. I'm not sure I
want to completely remove the other two backends in the next release,
but should definitely consider making resvg the default."
"Faster, more accurate SVG rendering with `resvg` backend. It does not
require cairo and supports gamma correction. Packagers are advised to
prefer this backend. The librsvg and nanosvg backends may be removed
in a future release ([#650][650])."
And there's no need to BD on 'cairo' anymore; by default it does not.
It would be great if version 1.14.1 was available in Debian :-)