one file per piece
What counts as a piece
Only the top level of the file is split, and only the parts that actually draw something: groups, symbols, paths, shapes, text and images. Gradients, filters, masks and stylesheets are definitions rather than drawings, so they are never listed on their own — a file containing just a gradient would be blank.
Every exported piece carries the whole set of definitions and styles from the original. That makes each file bigger than it strictly needs to be, and it is the deliberate trade: a piece that renders exactly as it did inside the original beats a smaller one with a missing gradient. Run the results through the SVG optimizer to drop what they do not use.
three steps
How to split an SVG
Drop the SVG
Pick a .svg file — it stays on your device.
Tick the pieces
Each one is previewed exactly as it will be exported.
Download
One piece downloads directly, several arrive as a ZIP.