A fully custom WordPress build with zero plugins and top 5% performance
ISIT Paris
An institutional WordPress site built entirely on a custom Sage/Laravel theme, with 100% custom Gutenberg blocks and zero plugins, delivered through an agency for a high-content, high-performance requirement.
0
Plugins used
99/100
Desktop performance score
0.6s / 0.2s
Desktop LCP / TTFB
01
Challenge & Approach
Challenge
The agency needed a new site with a large volume of institutional content, strict performance requirements, and no dependency on third-party plugins that could slow the site down or become a maintenance liability over time.
Our approach
A fully custom WordPress theme was built on Sage/Laravel, with 100% custom Gutenberg blocks and zero plugins, every feature developed natively. The design was reproduced pixel-perfect from the provided mockups, with technical SEO built in from the ground up and performance treated as a core constraint rather than an afterthought, across every device.
02
Measurable Outcomes
5,200
Monthly organic visits
Semrush, current data, 1,100 ranking keywords, 76,200 backlinks
0.6s / 0.2s
Desktop LCP / TTFB
Load times in the top 5% of WordPress sites worldwide
99/100
Desktop performance score
PageSpeed Insights, with Core Web Vitals approved
0
Plugins used
Every feature built natively into the custom theme, no reliance on third-party plugins
04
Project Visuals
05
Technical Highlights
Zero plugins, full custom theme
Every feature was built natively into a custom Sage architecture, avoiding the fragility and bloat that plugins can introduce.
Top 5% performance
0.6s LCP and 0.2s TTFB on desktop, performance most agencies don't reach even on €50,000 projects.
Institutional content, SaaS-level speed
Proof that a content-heavy institutional site can and should be as fast as a SaaS platform.
06
What We Delivered
Fully custom WordPress theme with Sage / Laravel
100% custom Gutenberg blocks
Zero plugins, everything custom-built
Pixel-perfect design from provided mockups
Native technical SEO integration
Maximum performance optimization
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