GDU JSON export
Preferred for exact file and directory counts, extensions, and modification ages.
gdu -o snapshot.gdu.json /pathgdu -o- /path | gzip -c > snapshot.gdu.json.gzLocal snapshot comparison
See where disk usage changed.
Choose a baseline and a later snapshot in the navigation panel, then process them locally. Reports stream into browser storage; no filesystem data leaves this page.
GNU DU export
Use a NUL-delimited, byte-sized export. Leaf paths are reported as unclassified.
LC_ALL=C du --all --block-size=1 --null --time --time-style=+%s /path > snapshot.du0