Unicode defines many icons which can be used either directly or via their HTML codes, e.g.:
🎂 🎂 🎂
A drawback of Unicode icons is, that the display will differ from system to system as they depend on the available Fonts.
You may upload images to your repository and use them via a relative image link:
<img src='img/foobar.svg'>
This will include the image from your repository (when uploaded to your 'img' directory).
Font Awesome 4 is included in OpenStreetBrowser, therefore you can use, e.g.:
<i class="fa fa-compass" aria-hidden="true"></i>
You can use normal CSS to modify its look, e.g.
<i style="color: red;" class="fa fa-compass" aria-hidden="true"></i>
Mapbox Maki Icons 4 are also included in OpenStreetBrowser. They can be accessed as images with protocol 'maki', e.g.:
<img src="maki:park">
This will include the park-15.svg icon. Mapbox Maki icons come in two sizes: 11 and 15. Default is 15, if you want to use 11 pass the size parameter with value 11:
<img src="maki:park?size=11">
You can pass URL options to the icon to modify its look. Note that every icon is a SVG path and all style options are available:
<img src="maki:park?size=11&fill=red&stroke=black&stroke-width=0.5">