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I have created field for objects in a layer that allow me to input links that will display a photo on mouse-over for that object in a webmap made with the qgis2web plugin for QGIS v3.2.

How do I restrict the image size to some preset boundary? Currently, each photo is displayed at full extent. I don't want to resize the image to explicit dimensions, because some are oriented vertically, while others are oriented horizontally. I would like to preserve the original aspect ratio of the photos, while reducing their overall size.

Added 9/24/18: I am exporting as OpenLayers.

  • Can you tell us whether you are exporting your webmap in OpenLayers or Leaflet format (you choose this in the qgis2web dialog)? The answer will be different for each. – Tom Chadwin Sep 24 '18 at 13:00
  • Exporting in OpenLayers. I added that to my question. Thank you @TomChadwin – Ryan S Sep 24 '18 at 17:48
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Find your exported map code, and open the file ./resources/qgis2web.css in a text editor. Add the following to the end of the file:

#popup-content img {max-width: 200px;}

Change 200px to the width you want. This won't enlarge images narrower than the stated max-width, but if all your images are larger, this could work for you.

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    Thank you! This is exactly what I wanted and worked perfectly. – Ryan S Sep 24 '18 at 18:22

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