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Preview of core-js count

core-js count by easrng

how many copies of core-js are on this page?

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A few seconds after loading, Bloomberg has 5 copies of core-js running.
About this extension
Many websites use core-js, sometimes even multiple copies! This extension shows a badge counting how many copies have loaded on a page.
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Permissions and data

Required permissions:

  • Access browser tabs
  • Access your data for all web sites

Data collection:

  • The developer says this extension doesn't require data collection.
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Version
1.1
Size
12.66 kB
Last updated
a month ago (17 Apr 2026)
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