<p></p>
<p dir="auto">I don't think it makes a whole lot of sense to reimplement the GPX export for 3 different routing engines. However, it might be a better idea to add some links underneath the direction results which point to the respective engine demo pages.</p>
<p dir="auto">These pages anyway have much more capabilities, like supporting additional waypoints. And more importantly, they also come with either GPX or GeoJSON export out of the box.</p>
<p dir="auto">Example links:</p>
<ul dir="auto">
<li><code class="notranslate">https://graphhopper.com/maps/?point=24.18978%2C120.86377_24.18978%2C+120.86377&point=24.18252%2C120.86482_24.18252%2C+120.86482&profile=hike&layer=Omniscale</code></li>
<li><code class="notranslate">https://valhalla.openstreetmap.de/directions?profile=pedestrian&wps=120.8635823%2C24.1893169%2C120.8648163%2C24.1825192</code></li>
<li><code class="notranslate">https://routing.openstreetmap.de/?z=17&center=24.188205%2C120.858920&loc=24.189317%2C120.863582&loc=24.182519%2C120.864816&hl=en&alt=0&srv=2</code></li>
</ul>

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