A simple script converting an odg file into individual SVG pages, works for libreoffice 7.0

odg2svgs.py

#!python
# usage: if you have an xxx.odg, then execute `./odg2svgs.py xxx`
import sys
import subprocess
import xml.etree.ElementTree as ET

kBASENAME = sys.argv[1]
subprocess.run(["libreoffice", "--draw", "--headless", "--convert-to", "svg", kBASENAME+".odg"], check=True)

tree = ET.parse(kBASENAME + ".svg")
root = tree.getroot()
pages_top = root.find('.//{http://www.w3.org/2000/svg}g[@class="SlideGroup"]')
pages = list(pages_top)
for page in pages:
	pages_top.remove(page)

for pagenum, page in enumerate(pages):
	pages_top.append(page)
	tree.write(f"{kBASENAME}-{pagenum:04d}.svg")
	pages_top.remove(page)


subprocess.run(["rm", kBASENAME+".svg"], check=True)