Adam Hafez
Key takeaways
- Mobile INP improved to 77% of websites with good scores in 2025, up from 74% in 2024, while desktop held at 97%.
- The top 1,000 websites gained the most, rising from 53% to 63% good INP, yet they still sit 14 points below the overall mobile average.
- Mobile home pages reached 80% good INP, a 7 point gain, while secondary pages slipped to 69%, opening an 11 point gap that did not exist in 2024.
- Lab Total Blocking Time worsened by 58% even as field INP improved, so lab scores alone no longer predict what real users experience.
Interaction to Next Paint is the Core Web Vital that measures how quickly a page responds to clicks and taps. The 2025 Web Almanac Performance chapter, built on Chrome UX Report field data, shows mobile INP improving overall while the busiest sites and inner pages still struggle.
How many sites have good INP?
For an origin to be rated good, at least 75% of sessions must record an INP of 200 milliseconds or less. On that bar, 77% of websites passed on mobile in 2025, up from 74% in 2024. On desktop, 97% had good INP, 2% needed improvement and less than 1% were poor. On phones, 21% needed improvement and 3% were poor. The mobile-desktop gap narrowed to 20 percentage points.
Do popular websites pass INP more often?
No. Segmenting mobile origins by rank, the Almanac found good INP at 63% for the top 1,000 websites, 56% for the top 10,000, 56% for the top 100,000 and 64% for the top 1,000,000. The figure climbs to 76% across the top 10,000,000 and 77% for all websites.
The top 1,000 improved fastest, from 53% to 63%. They were 21 points below the average in 2024 and 14 points below in 2025. The Almanac attributes the difficulty to heavier JavaScript, richer interactive features and third-party integrations on high-traffic sites. It calls the gains likely the result of manual optimization of complex JavaScript.
Do home pages or inner pages respond faster?
Page-level CrUX data shows a split that was absent in 2024, when mobile home and secondary pages scored 73% and 72%. In 2025, mobile home pages reached 80% good INP, a 7 point gain, while secondary pages fell to 69%. On desktop the two were close, at 97% and 95%. The Almanac points to filters, carousels, form validation and late-loading third-party widgets as likely causes on deeper pages, so audit templates beyond the home page (see technical SEO).
Does lab Total Blocking Time still predict INP?
Less than before. Total Blocking Time is a lab proxy for responsiveness, yet the Almanac reports it rose 58% while field INP improved. Median mobile TBT was 1,916 milliseconds against 92 milliseconds on desktop. The Almanac suggests sites may be tuning the interactions that dominate INP while background JavaScript work still blocks the main thread. Judge INP from field data.
The evidence
- Period
- 2025 Web Almanac, CrUX field data
- Sample
- All CrUX origins, segmented by rank and page type
Method: The Web Almanac Performance chapter combines HTTP Archive crawl data with Chrome UX Report field data. Most CrUX figures are per origin, where a good INP means at least 75% of sessions are 200 milliseconds or faster. Home versus secondary page comparisons use page-level CrUX data collected by the crawler at crawl time where available.
Sources
- 1.Performance | 2025 | The Web Almanac - HTTP ArchivePrimary
- 2.Methodology | 2025 | The Web Almanac - HTTP Archive
About the author
Founder
Founder, UpgradIQ, Inc.
Adam Hafez works on technical SEO and search measurement: how pages get crawled, indexed, ranked and now quoted by answer engines. He founded UpgradIQ, which reads Google Search Console and GA4 to tie ranking movement back to the changes that caused it. He publishes what the data supports and states the limits of it.
- Technical SEO
- Search Console and GA4 measurement
- Answer engine optimization
- Structured data
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