overpass turbo now with MapCSS support

Posted by tyr_asd on 15 April 2013 in English (English)

overpass turbo ( – "the" graphical user interface for Overpass API – just got a nice new feature: Now, you can use MapCSS to style the results of your Overpass queries.


MapCSS is a CSS-like language for map stylesheets. In overpass turbo, those stylesheets can be attached to a query by using a special curly-bracket "mustache" notation:

  ... your overpass query here ...
  ... your mapcss stylesheet here ...

MapCSS support is still somewhat limited (no text labels, no casings for lines, no layers - more information) but you can already achieve quite pleasant results: See (and try) the examples below.

Supported styling-properties include:

  • lines: color, width, opacity and dash-arrays
  • areas: fill-color, fill-opacity and casings
  • points: icons or symbols (circle)



Next, I'd like to make MapCSS also available for the "interactive map" export. This would allow to easily create pretty nice interactive embeddable maps.

Then, apart from implementing missing MapCSS features (such as text-labels and line-casings), I think about letting the user customize the following things with MapCSS, too:

  • the content of the popups (and whether or not to show popups at all)
  • background tiles and overlays (currently MapCSS allows to set a background color only - but why stop there?)
  • more dynamic properties that are only relevant for interactive maps (:hover?)

Most of the MapCSS parsing code was written by Richard Fairhurst for an early version of the iD-editor, but abandoned and now resurrected for this project. I think, once this feature is stable, I could provide a vanilla-javascript version of this mapcss implementation as an independent ready-to-use library ("jsmapcss").

Comment from Richard on 15 April 2013 at 15:46

That's crazily good - very impressed.

Hide this comment

Comment from Tom Chance on 15 April 2013 at 16:09

This is great, thanks!

Hide this comment

Comment from ingalls on 15 April 2013 at 20:10

Wow, I've been playing around with it and can see it being very useful!! Really great job

Hide this comment

Comment from Tom Chance on 16 April 2013 at 08:59

Quick question - is it possible to render features several times dependent on different tags?

For example I was hoping this would result in big fat green lines with thin black ones overlaid on top, but it just rendered the black lines without the green underneath:

way[sidewalk=both] { width:8; color: green; } way[highway=residential] { color:black; width:2; opacity:1; }

Hide this comment

Comment from tyr_asd on 16 April 2013 at 09:15

@Tom: No, multiple layers are not supported yet. For this I'll have to rewrite some of the data-rendering code, so it won't be available very soon, I'm afraid.

Hide this comment

Comment from Tom Chance on 16 April 2013 at 14:06

No problem, thanks for your work so far.

Hide this comment

Comment from mikelmaron on 29 April 2013 at 23:00

awesome. hey, when can we get a simple link from export tab to overpass turbo?

Hide this comment

Comment from tyr_asd on 30 April 2013 at 11:06

@mikelmaron: Idk, could that be useful? I thought more about augmenting the "browse data" view with some overpass turbo features...

Hide this comment

Comment from jotzt on 30 March 2014 at 17:36

Is there a way to use the MapCSS-"metric()" function with overpass turbo?

Hide this comment

Comment from tyr_asd on 30 March 2014 at 18:25

@jotzt: no, I'm afraid, that's not yet implemented.

Hide this comment

Leave a comment

Parsed with Markdown

  • Headings

    # Heading
    ## Subheading

  • Unordered list

    * First item
    * Second item

  • Ordered list

    1. First item
    2. Second item

  • Link

  • Image

    ![Alt text](URL)

Login to leave a comment