DebugBear Documentation
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DebugBear Analysis Agent
Page analyses are run using Lighthouse 5.5 and Chrome 78.
See what server locations are available.
Network throttling
DebugBear throttles the network at the packet-level. (Older pages may use DevTools throttling, you can change this in the settings. They may also use different latency settings.)
| Device type | Bandwidth | Latency |
|---|---|---|
| Desktop | 8.0 Mbps | 40ms |
| Mobile | 1.6 Mbps | 150ms |
Screen size
| Device type | Size |
|---|---|
| Desktop | 412x660px |
| Mobile | 1350x940px |
User agent
DebugBear send this user agent string on desktop:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_6)
AppleWebKit/537.36 (KHTML, like Gecko)
Chrome/74.0.3694.0 Safari/537.36 Chrome-Lighthouse DebugBear
And this one on mobile:
Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5 Build/MRA58N)
AppleWebKit/537.36 (KHTML, like Gecko)
Chrome/74.0.3694.0 Mobile Safari/537.36 Chrome-Lighthouse DebugBear
Note that the Chrome version is based on what's specified in Lighthouse, not the actual Chrome version that's used to load the page.
Differences to other tools and environments
Read this blog post to learn more about how different settings and environments can affect your scores.
Still need help? Contact matt@debugbear.com for support.