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TL;DR
Keeping Up with User Experience Metrics
Interaction to Next Paint (INP) was prepared for in 2023 and later replaced First Input Delay as a Core Web Vital. INP measures responsiveness across user interactions such as taps and clicks.
It replaced First Input Delay as the interaction metric, rather than measuring whether a page uses a responsive layout. Responsive interactions help visitors complete tasks; a good Core Web Vitals score alone does not guarantee better rankings.
Mobile‑First Remains Standard
With mobile devices accounting for the majority of web traffic, Google’s mobile‑first indexing continues to be the baseline for ranking and indexing. This means the mobile version of your website is the one that counts most.
Pages must be designed for smaller screens, with easily readable text, tappable buttons, and minimal intrusion from pop‑ups. Core Web Vitals—Largest Contentful Paint, Cumulative Layout Shift, and INP—should remain well within recommended thresholds.
Tools such as PageSpeed Insights and the Core Web Vitals report in Search Console can help identify performance issues.
Action Steps
Audit your site for responsiveness by testing on various devices and connection speeds. Optimise images and scripts to reduce loading times, and remove or delay non‑essential elements.
Use lazy loading for off‑screen content, compress assets, and implement caching. Ensure that all interactive elements respond quickly and predictably.
Remember, user experience is not only a ranking factor—it also directly affects conversion rates and customer satisfaction.
SEO Takeaways and Next Steps
Mobile usability matters for completing tasks. Prioritise slow or unstable pages and check both field data and completed customer actions; a score alone does not prove a ranking effect.
For example, reserve space for a mobile hero image so the enquiry button does not jump while loading, then test that the button responds promptly. See Google's Core Web Vitals guidance and the mobile usability checklist. Reviewed 15 October 2026.
Need help improving site performance? contact me at info@phil‑carr.co.uk or 01226 697 325 for a tailored audit.
If you need help with your SEO strategy, get in touch by emailing info@phil-carr.co.uk or calling 01226 697 325.
Update — June 2026
Historical update note: a ranking drop needs page-level and query-level investigation before attributing it to a core update. Check Search Console, the affected templates and recent site changes; do not infer a cause from content length or whether AI tools assisted its production.
