source appears as a parameter/key in many Google Search referral URLs.

I've seen and/or heard of the following key values, as examples:

  • source=hp
  • source=lnms
  • source=web

Does anyone have any idea of what it means? Does anyone have a more complete list of values and their meanings?


According to https://www.reddit.com/r/explainlikeimfive/comments/2ecozy/eli5_when_you_search_for_something_on_google_the/ it is where you entered the search query - Google web site, browser plugin, etc.

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