The KML file cannot be read by the Google Maps KML Layer

Question

The KML file cannot be read by the Google Maps KML Layer

I'm currently facing an issue with reading a simple KML file using Google Maps API 3. I have created the KML file in Google Maps Editor and I am using the google sample codes, but I can't seem to identify where the problem lies.

gm-sample.html

BTM.kml

function initMap() {
        var map = new google.maps.Map(document.getElementById('map'), {
          zoom: 13,
          center: {lat: 40.40926, lng: 49.86709}
        });

        var ctaLayer = new google.maps.KmlLayer({
          url: 'itdc.byethost7.com/BTM.kml',
          map: map
        });
      }

javascript google-maps-api-3 kml

Answer 1

Answer №1

The KML link on github.com has a MIME type of "text/plain", but it should be "application/vnd.google-earth.kml+xml"

3 KML MIME Types
To properly respond to requests from Google Earth (or any Earth browser), a KML server must adhere to specific rules for Google Earth to interpret the responses correctly.

Upon successful response, the server must return HTTP 200 and set the content-type of the response to an appropriate MIME type as outlined here.

Google Earth reads KML and KMZ files. The MIME type for KML files is application/vnd.google-earth.kml+xml

The MIME type for KMZ files is
application/vnd.google-earth.kmz

Validator results:

Recommendations

This feed is valid, but enhancing interoperability with various feed readers can be achieved by implementing the following recommendations.

Feeds should not have a media type of "text/plain"

If I host your KML on my server (which uses the correct MIME type for serving KML), it functions correctly

BTW - If I direct the validator to the link provided in your question's code, it doesn't recognize it as a KML file at all, however, if I use that URL for KmlLayer, it works fine too

Answer 2

The KML link on github.com has a MIME type of "text/plain", but it should be "application/vnd.google-earth.kml+xml"

3 KML MIME Types
To properly respond to requests from Google Earth (or any Earth browser), a KML server must adhere to specific rules for Google Earth to interpret the responses correctly.

Upon successful response, the server must return HTTP 200 and set the content-type of the response to an appropriate MIME type as outlined here.

Google Earth reads KML and KMZ files. The MIME type for KML files is application/vnd.google-earth.kml+xml

The MIME type for KMZ files is
application/vnd.google-earth.kmz

Validator results:

Recommendations

This feed is valid, but enhancing interoperability with various feed readers can be achieved by implementing the following recommendations.

Feeds should not have a media type of "text/plain"

If I host your KML on my server (which uses the correct MIME type for serving KML), it functions correctly

BTW - If I direct the validator to the link provided in your question's code, it doesn't recognize it as a KML file at all, however, if I use that URL for KmlLayer, it works fine too

The KML file cannot be read by the Google Maps KML Layer

Answer №1

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