I am exporting a QGIS map to an image format. I would like to have control over the output settings of the image (dpi), as currently it is only exporting the images at 96 dpi. Does anyone know if this is possible?
Currently it's not possible to adjust the resolution of an output image using "Save as Image".
To create high-resolution output, you have to use Print Composer.
There is also a way to get a high-resolution image with world file: With QGIS from command line you have the option to create PNGs in any size including world files.
Available options are:
You have to prepare your project first and then create a snapshot.
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The command snapshot only works if you use a width/height values that are lower than the screen resolution (display). If not, QGIS adds a blank space to make a higher resolution image. Am I using the command properly? Try to use, for example, --height 4096 --width 4096.