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Get insight into the performance of the website in the current tab - sort of a mini live version of WebPageTest

Performance-Analyser (aka Performance-Analyzer) helps to analyze the current page through the Resource, Navigation and User Timing APIs - see requests by type, domain, load times, marks and more - instantly. Performance-Analyser is the Chrome Extension version of Performance-Bookmarklet. Code:

4.5 out of 543 ratings

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Chris StahlDec 30, 2022

Great tool! Only thing missing is a way to export results.

3 out of 3 found this helpful
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NewtomicFeb 18, 2021

I like this one, but it misses a key point for me (showing a small number with the time in the icon).

1 person found this review to be helpful
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Vasanth M ShanmugamJun 23, 2020

This tool has surprised me with the amount of details it provided me. Thanks a lot to the developers.

2 out of 2 found this helpful


  • Version
  • Updated
    December 9, 2020
  • Offered by
    Michael Mrowetz
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  • Non-trader
    This developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.


The developer has disclosed that it will not collect or use your data.

This developer declares that your data is

  • Not being sold to third parties, outside of the approved use cases
  • Not being used or transferred for purposes that are unrelated to the item's core functionality
  • Not being used or transferred to determine creditworthiness or for lending purposes


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