Case Study: 100/100 PageSpeed Without a Dev Team
PageSpeed Isn’t Just Tech. It’s Strategy.
In a world shifting to AI-first search and experience-driven SEO, technical performance is no longer a backend issue, it’s a growth lever.
On a recent rebuild for a company I took multiple service pages from under 30/100 PageSpeed scores to 100/100 on mobile, without developers involved.
This was not just about shaving milliseconds. It was about building authority, trust, and conversion velocity into the very structure of the site.
Client:B2B service company in a highly competitive niche
Role: Technical Marketing Consultant, Technical SEO
Engagement: 2-month optimization sprint
The Challenge
The client’s site looked fine on the surface but suffered from poor PageSpeed Insights scores, many key pages were scoring under 30/100 on mobile, which impacted both UX and rankings.
There was no dev team available, and the existing CMS setup had limited flexibility. Yet, conversion performance and organic rankings were stalling due to site speed and structural bloat.
The Strategy
We redefined the project as more than a tech fix, it became a trust, experience, and performance strategy. Actions included:
- Rebuilt key pages using performance-optimized components and semantic structure
- Refactored all images, scripts, and plugins without developer involvement
- Shifted to lightweight theme assets and server-side optimization
- Audited and corrected all Core Web Vitals and Lighthouse criteria
- Educated the internal team on maintaining performance hygiene post-launch
The Execution
- All work was done without a developer using a mix of technical SEO tooling, performance UX heuristics, and no-code stack optimization.
- Stripped unused CSS and JavaScript from key page templates.
- Replaced bulky theme features with lightweight HTML/CSS components.
- Implemented critical CSS, deferred rendering, and lazy loading for all imagery.
- Switched to a server-side caching layer and optimized DNS/TTFB.
- Added more crawler friendly canonical URLs for heavily parameterized URLs
ENTERPRISE SEO EXECUTIONPLATFORM SCALABILITY STRATEGY| PageSpeed Score | 100 / 100 | 100 / 100 |
| First Contentful Paint | 0.3s | 1.2s |
| Speed Index | 0.5s | 1.6s |
| Total Blocking Time | 20ms | 60ms |
| Accessibility | 96 / 100 | 96 / 100 |
| Best Practices / SEO | 100 / 100 | 100 / 100 |
⚙️ Built on WordPress with server-side rendering. No plugins. No bloated page builders. No unnecessary scripts.
The Results
- 100/100 PageSpeed scores on all service pages mobile and desktop
- 2x increase in organic conversion rate from mobile sessions
- 40% lower bounce rate on high-intent pages
- Core Web Vitals passed across the board
- Zero development hours used; built entirely on CMS and marketing tools
- Boosted rankings for several bottom-of-funnel SEO terms
Ready to replicate this kind of growth?
Let’s explore what this approach could unlock in your business. Whether it’s visibility, conversion velocity, or strategic marketing alignment. I help modern B2B companies build AI-visible pipelines that convert.