The stroke font used for the images has the following Copyright notice:
Copyright (C) 2004-2020 Ulrich Apel, the AAAA project and the Wadoku project
All rights reserved.
Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
The original font is available at ＜www.nihilist.org.uk＞.
If you want the SVG images, download this zip file (copyright.txt included).
No need, see (2) or (3) above.
I know that there are lots of other online resources for showing the stroke order of sinograms. Some of them are more useful than others. Most (probaly all) of them are incomplete with regard differences in stroke order according to region and writing style. Additionally, they explain often a rather limited number of sinograms.
KanjiStrokeOrders has the first two limitations as well (and might be less well maintained) but it does explain many more graphs (I counted 6612). I also happen to like the minimalist black and white single image with numbers style. If you know of a better resource, please let me ＜firstname.lastname@example.org＞ know.