Yes. Simplest is to use Saite. The defaults Saite uses support saving as either png or svg. When you render a chart (either via the modal popup using the client editor pane, or the hmi/sv! function on server side) the visualization will also have a circle with three dots (...) in the upper right (it is 'dim' until you mouse over it). Click that and the options are displayed.

@U1EP3BZ3Q ^^^

thank you! I'll give it a try soon. I plan to generate a bunch of charts for documentation.

That's definitely doable - I've done it. But it is not super convenient when you are talking a lot of charts/plots. The capability is directly from Vega-Embed and does not offer an option to give a specific name. If this is something that you would tend to do on a regular basis, you might want to weigh in on https://github.com/jsa-aerial/saite/issues/2