# fx bootfs-size-report | |
produce an uncompressed size report from a ZBI | |
```none | |
usage: fx zbi-size-report [--zbi <file>] [--output-json <file>] | |
--zbi <file> path to ZBI to analyze; defaults to out/default/fuchsia.zbi | |
--output-json <file> where to save report of uncompressed file sizes | |
in a d3js-friendly format; defaults to a temporary file | |
``` | |
[bootfs-size-report source code](https://cs.opensource.google/fuchsia/fuchsia/+/main:tools/devshell/bootfs-size-report) |