Where is the cookie "_boomr_clss" belonging to?

Topic summary

The _boomr_clss cookie is a Shopify performance monitoring tool that tracks website metrics to optimize user experience.

Key characteristics:

  • Measures page load times, errors, user interactions, and navigation patterns
  • Collects anonymized data that cannot identify individual users
  • Functions as a session-based cookie, automatically deleted after browser closure or inactivity
  • Sends performance data to Boomerang servers for analysis

Purpose: Helps website operators identify areas for improvement to ensure faster, smoother shopping experiences. The data remains secure and confidential, with Shopify and Boomerang prioritizing user privacy.

The thread began with users unable to identify this cookie’s origin in their Shopify stores using the “venue” theme. After initial unanswered questions, a detailed explanation was provided clarifying its performance optimization function.

Summarized with AI on November 20. AI used: claude-sonnet-4-5-20250929.

Hello ObiJanKenobi,

Did you manage by chance to identify the cookie? Would be much appreciated, if can share how to resolve the topic.

Kind regards,

Mitschri