JourneyMonitor (see https://github.com/journeymonitor and http://journeymonitor.com/) allows users to upload a Selenium test script and have this script run regularly in a headless Firefox.
The service notifies the user if the script run failed, and additionally collects HAR data for each run, like this one: http://codebeautify.org/jsonviewer/c6b9d9
Next, we would like to provide the user with more info regarding the collected HAR-based performance metrics. For each testcase, we would like to present a summary like this:
- Average overall load time of pages
- Average load time of all CSS assets (or JS assets or image assets etc.)
- Average number of 404s when requesting assets