You can use it to archive websites and recreate them offline, Internet Archive supports HAR files for archiving.
You can use them to recreate user scenarios for acceptance testing and performance tests, via tools like K6 (K6 which also supports InfluxDB, so you can gather the metrics yourself and have your own UI [via Grafana or anything else that supports InfluxDB])
You can use them for troubleshooting all sorts of user/client issues if you have a easy way of gathering the HAR files, or if your users are developers.
They're simply a invaluable tool in web development these days, if you deal with web frontends/backends.
You can use it to archive websites and recreate them offline, Internet Archive supports HAR files for archiving.
You can use them to recreate user scenarios for acceptance testing and performance tests, via tools like K6 (K6 which also supports InfluxDB, so you can gather the metrics yourself and have your own UI [via Grafana or anything else that supports InfluxDB])
You can use them for troubleshooting all sorts of user/client issues if you have a easy way of gathering the HAR files, or if your users are developers.
They're simply a invaluable tool in web development these days, if you deal with web frontends/backends.