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October 2025 Release Notes

· 2 min read

We've made it easier to identify slow pages, added INP reporting to lab test results, introduced new test locations, and more.

Scan your website for slow pages

We've improved our website scan feature so you can now use it to identify slow pages based on your sitemap and data from Google's Chrome User Experience report. This only works if your pages get enough traffic to get URL-level data.

CrUX website scan

Measure INP in synthetic tests

We now collect Interaction to Next Paint measurements for click and keyboard interactions that are run as part of a user flow.

Coming next month: track those metrics over time.

INP reporting for user flow interactions

Detect large fonts slowing down your website

Are oversized font files delaying rendering on your website? Our performance analysis now auto-detects this issue and provides an automatic experiment to measure page speed with those fonts blocked.

Oversized font recommendation

5 new test regions

We've added 5 new test server locations:

  • Mexico
  • Sweden
  • Belgium
  • Chile
  • Indonesia

Share specific test results

You can now share specific test results or comparisons with a unique public URL.

Test result share dialog

RUM API improvements

Our RUM data API now lets you:

  • Pick statistics other than the 75th percentile, for example the average or 90th percentile
  • Pass in negative filters or wildcard matches

LoAF data in our free INP Debugger

Our free INP Debugger now not only identifies slow page interactions, but also reports slow scripts using the Long Animation Frames API.

INP Debugger with slow scripts

New articles

We've published a number of new guides to performance and web development more broadly:

Web performance videos

Some of our new Youtube videos:

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