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Audit: false positive for preconnect/dns-prefetch suggestion #5932

@ebidel

Description

@ebidel

OMG. Finally moved off tumblr.com for my blog! I built a dope site but want to make The House the happiest it can be.

I'm using `link rel=preconnect" for a couple of domains, but LH re-suggests that to me as an improvement :\

Provide the steps to reproduce

  1. Run LH 3.0.3 on https://ericbidelman.com

What is the current behavior?

Perf > Opportunities says that I should use dns-prefetch and/or connect to reduce RTTs to origins:

screen shot 2018-08-29 at 2 57 09 pm

What is the expected behavior?

I'm already using preconnect for both these origins:

screen shot 2018-08-29 at 2 57 21 pm

Not sure if the audit already does this, but we we could look at the DOM for link rel=preconnect|dns-prefetch and remove any origins users are already preconnecting to.

Environment Information

  • Lighthouse version: 3.0.3

Related issues

Report:
https://googlechrome.github.io/lighthouse/viewer/?gist=4bd3bf89ce0ac69319db6cf1e9b94a83

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