...
Embedding image files into SVG files
It is possible to embed images file image files into an SVG file. If an image file is embedded into an SVG file, then the original image file is no longer needed, because the image data is then available from the SVG file itself. To embed an image file into an SVG file using Inkscape, do the following. Open the SVG file in Inkscape. Add one or more images to the file in the normal way. Then select menu "Extensions", then select "Images", then select "Embed Images". Then click "Apply". Then save the SVG file in the normal way. Now the images are embedded into the SVG file. If all the images in an SVG file are embedded, then Delft-FEWS only needs the SVG file itself (and not the original image files) for displaying in the scada display.
...