Using embedded SVG symbol in multiple layers

Question

When I embed an SVG symbol in QGIS 3.x, the symbol is stored in the layer definition. If I have another layer and like to use the symbol again, I have to embed it a second time.
How can I embed an SVG symbol globally and use it in multiple layers?

christoph · Accepted Answer

While playing around with Data URIs, I managed to store SVG images inline without base64 encoding. Only have to put 'data:image/svg+xml;utf8,' in front. Depending on the SVG content, the inline SVG data strings are much smaller without encoding. 'data:image/svg+xml;utf8,'

christoph · Answer

Found the answer to my problem: We can store the base64 encoded SVG string in a project variable and link to this variable (i.e. 'mySymbol').
base64: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

Using embedded SVG symbol in multiple layers

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