🏰 THE FORTRESS WEEKLY
Good morning,
While analyzing this week's Core Web Vitals data, I discovered something that should concern every agency owner: Nearly 600,000 websites went from passed to failed Core Web Vitals when INP officially replaced FID in March 2024 - Source: NitroPack
This metric change has created significant challenges for websites using heavy JavaScript frameworks, as the new INP metric assesses all interactions throughout the user's entire session rather than just the first interaction.
But the real impact isn't just Core Web Vitals failures; it's the cascading client retention challenges that performance issues create for agencies.
Today's Challenge: The JavaScript Performance Challenge
The Agency Reality Check: Sites relying on heavy JavaScript frameworks are experiencing Core Web Vitals challenges following the INP metric implementation.
JavaScript frameworks can impact loading performance, interactivity, and visual stability, the three areas measured by Core Web Vitals.
Is this affecting your client retention? Let's assess how JavaScript performance impacts your agency's service delivery.
Takes 2 minutes to book, could help improve your technical SEO service delivery.
Immediate Agency Impact:
LCP (Largest Contentful Paint) should be 2.5 seconds or less for optimal Core Web Vitals performance - Source: Google Developers
The average SEO client stays with an agency for 11 to 14 months - Source: Ahrefs via SEO SandwichLCP (Largest Contentful Paint) should be 2.5 seconds or less for optimal Core Web Vitals performance - Source: Google Developers
The average SEO client stays with an agency for 11 to 14 months - Source: Ahrefs
Agencies that provide detailed SEO reports have a 35% higher client retention rate - Source: SEMrush
Agency Performance Factors:
Service Quality: White label providers report 34% fewer client complaints about penalties and algorithm impacts compared to agencies handling SEO internally - Source: DashClicks
Technical Delivery: White label partnerships typically deliver 52% faster page load times and more comprehensive technical audits - Source: DashClicks
Client Relationships: Detailed reporting and transparent communication are key factors in maintaining long-term client relationships
Why This Matters Right Now
INP (Interaction to Next Paint) officially replaced FID as a Core Web Vitals metric on March 12, 2024, requiring websites to optimize for responsiveness throughout the entire user session - Source: Google Web.dev
Bottom Line: JavaScript performance issues can impact Core Web Vitals scores, which are important for both user experience and search engine optimization.
The Rank Fortress White-Label Solution
At Rank Fortress, we've developed comprehensive white-label SEO services for agencies through our Advanced Performance Partnership Framework.
Technical SEO & Core Web Vitals Optimization
Comprehensive technical SEO audits and optimization
Core Web Vitals monitoring and improvement strategies
Strategic approach to website performance optimization
White-Label SEO Services & Client Reporting
Detailed SEO reporting and performance tracking
White-label partnership model that maintains your agency branding
Consistent service delivery regardless of internal staffing changes
Scalable Technical Implementation
Dedicated white-label technical SEO team
Ongoing performance monitoring and optimization
Advanced technical SEO capabilities without overhead costs
Partnership Benefits for Agencies
The transition from JavaScript performance struggles to optimized Core Web Vitals typically takes 2-4 weeks with our proven onboarding process:
Week 1: Current client portfolio audit and Core Web Vitals assessment
Week 2: White-label system integration and performance baseline establishment
Week 3: Technical optimization deployment with branded reporting setup
Week 4: Full partnership activation with ongoing performance monitoring
Ready to scale your technical SEO offerings? Your free audit is just one click away.
This Week's SEO Intelligence
Core Web Vitals Update: INP (Interaction to Next Paint) officially replaced FID (First Input Delay) as a Core Web Vitals metric on March 12, 2024, requiring more comprehensive responsiveness optimization - Source: Google Web.dev, March 2024
Performance Standards: Google's official Core Web Vitals thresholds remain: LCP under 2.5 seconds, INP under 200 milliseconds, and CLS under 0.1 - Source: Google Developers, 2025
Industry Impact: Nearly 600,000 websites experienced Core Web Vitals compliance changes following the INP implementation - Source: NitroPack
SEO Wisdom
"To provide a good user experience, pages should have an INP of 200 milliseconds or less." — Google Web.dev Official Documentation
P.S. - Remember: Core Web Vitals are important metrics for both user experience and search performance. The question isn't whether you'll optimize for these metrics; it's whether you'll partner with experts who can help you deliver consistent results for your clients.