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How do I create a banner to promote my OpenStreetMap event?

We occasionally display banner images on the main page of openstreetmap.org to promote a large OpenStreetMap focused conference or host a worldwide donation drive. This is a great way to reach a lot of people!

  1. Please review openstreetmap/operations#150 to know whether your event qualifies for a front-page banner.

  2. Create the banner image. Some guidelines:

  • Image should be 350px wide (exactly) x 350px tall (or shorter).
  • Use a standard web image format (.gif, .jpg, .png)
  • Note that a close 'X' button will be drawn over the top right 60x60px corner of the banner, so please do not put anything important in that space.
  1. Prepare a pull request which includes the following:
  • The banner should be saved under the app/assets/images/banners/ folder, and should have a name that makes it clear what it is for (e.g. donate-2017.jpg)
  • Edit config/banners.yml to contain an entry for the event banner. It should contain the following:
    • id - a unique identifier (e.g. donate2017)
    • alt - alt name for the image (e.g. OpenStreetMap Funding Drive 2017)
    • link - URL for your event page (e.g. https://donate.openstreetmap.org/)
    • img - the filename for the banner image (e.g. banners/donate-2017.jpg)
    • enddate - the final date that the banner will be shown (e.g. 2017-oct-31)
  • (optional) Feel free to cleanup the old images from the app/assets/images/banners/ folder and old entries in the config/banners.yml file.

See PR #1296 as an example.