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I'm using QGIS version 2.12.2, and using print composer to export my map to an image file (I've tried pdf as well). In the print composer it displays fine - just a basemap overlayed with land type data. However, as soon as I export the map, the basemap and the overlayed data are misaligned; rivers are categorised as fields etc. How can I ensure that the image produced from print composer is accurate?

  • What are you using as your basemap? If you are using webmap (Google, Bing etc) imagery it may not export well. – Dùn Caan Jan 21 '16 at 16:48
  • Ah, okay. I'm using the Stamen Toner/OSM webmap, so that must be my problem. Thanks! – Syra Jan 21 '16 at 16:55
  • Yeah, not sure on specifics but I had trouble with the same thing, may be to do with web Mercator projection that web maps use. – Dùn Caan Jan 21 '16 at 16:56
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Don't use the OpenLayers plugin. Use the QuickMapServices plugin instead, as that works correctly with the map composer.

  • Perfect - thank you. I wasn't aware of this plugin and have now switched from the OpenLayers plugin. This fixed the problem. – Syra Jan 23 '16 at 10:46
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I've already had this problem with webmaps. I got a clean output by setting the same scale inside QGIS canvas and Print Composer.

In my case, misalignment came from scales being different between the two frames. enter image description here

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