...
- Icons must be delivered to us in SVG file format.
- The SVGs files should meet the following technical qualifications:
No SVG elements except for paths.
- Flatten the SVG as much as possible.
Avoid groups or transforms if possible. No guarantee for icons working with complex groups and transforms.
- Don't use "shadow" and "stroke" effects. Flatten strokes into geometries with fill instead.
- Use only flat fills, not gradients or transparency.
Height and width should be around 31x31, although other sizes work.
- Units must be in pixels.
- Don't use styles, but instead use attributes for color styling.
Bad: <style>.mystyle{fill: #FC0}</style>
Good: <path fill="#fc0">
Sizing of icons
The exact sizing of the icons in the resulting maps can vary, as we do scaling of icons to fit the maps.
But a rule of thumb is to design the icons to be displayed at a size between 20x20 and 30x30
...