he Base Script

This bash "one-liner" displays all blob objects in the repository, sorted from smallest to largest.
For my sample repo, it ran about 100 times faster than the other ones found here.

git rev-list --objects --all \
| git cat-file --batch-check='%(objecttype) %(objectname) %(objectsize) %(rest)' \
| awk '/^blob/ {print substr($0,6)}' \
| sort --numeric-sort --key=2 \
| cut --complement --characters=13-40 \
| numfmt --field=2 --to=iec-i --suffix=B --padding=7 --round=nearest

This will generate nice human-readable output like this:

...
0d99bb931299 530KiB path/to/some-image.jpg
2ba44098e28f 12MiB path/to/hires-image.png
bd1741ddce0d 63MiB path/to/some-video-1080p.mp4

Filtering

To achieve further filtering, insert any of the following lines before the sort line.

To exclude files that are present in HEAD, insert the following line:

| grep -vF "$(git ls-tree -r HEAD | awk '{print $3}')" \

To show only files exceeding given size (e.g. 1 MiB = 220 B), insert the following line:

| awk '$2 >= 2^20' \

Output for Computers

To generate output that's more suitable for further processing by computers, omit the last two lines of the base script. They do all the formatting. This will leave you with something like this:

...
0d99bb93129939b72069df14af0d0dbda7eb6dba 542455 path/to/some-image.jpg
2ba44098e28f8f66bac5e21210c2774085d2319b 12446815 path/to/hires-image.png
bd1741ddce0d07b72ccf69ed281e09bf8a2d0b2f 65183843 path/to/some-video-1080p.mp4