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_14_6)
AppleWebKit/537.36 (KHTML, like Gecko)
Chrome/84.0.4110.0 Safari/537.36 Chrome-Lighthouse DebugBear

And this one on mobile:

Mozilla/5.0 (Linux; Android 7.0; Moto G (4))
AppleWebKit/537.36 (KHTML, like Gecko)
Chrome/84.0.4110.0 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.
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