Elementor out, same design: LCP from 8.0 to 3.2 seconds

An enterprise data platform’s marketing site on OceanWP, Elementor Pro and 38 plugins. Rebuilt as a lean custom block theme with every page migrated by script, the builder and most of the plugins removed, the design exactly as it was.

  • ClientEnterprise data platform
  • PlatformElementor → block theme · ACF · Vite · GSAP
  • ServiceWordPress speed
Homepage LCP, mobile
3.2 s
from 8.0 s
Lighthouse, average of 4 key pages
91
from 67
Homepage requests, site’s own code
33
from 101
The case
01 · The problem

A megabyte of code, most of it unused.

Every page loaded the full Elementor, Essential Addons, Crocoblock and OceanWP stacks: 39 JavaScript files and 27 stylesheets on the homepage, 165 KB of CSS that no rule on the page used, 31 render-blocking requests. Content lived in builder JSON and a flexible-content field, so even small layout changes were risky.

Transferred bytes by type, homepageMobile · site’s own code · before
JavaScript
377 KB
CSS
237 KB
Images
286 KB
Fonts
113 KB
02 · What I changed

109 blocks, one engine swap.

Every section layout of the old theme ported one to one into ACF Gutenberg blocks, using the original markup rather than inventing new ones. Each block ships its own small CSS and loads its JavaScript only when it scrolls into view. The bars show the homepage bytes left after each step.

1Per-block CSS: 27 stylesheets → 1, 237 KB → 6 KB, 0 KB unused−231 KB2JavaScript split per block, loaded in view: 377 KB → 56 KB−321 KB3WebP through the CDN; hero 415 KB → 159 KB−20 KB net4Render-blocking requests 31 → 1first paint 3.7 s → 1.9 s5405 pages and 177 posts migrated by script; 38 → 6 plugins, 14 GB of junk gonedatabase 332 → 127 MB
03 · The result

Same design, new engine.

Homepage LCP on a simulated mid-range phone from 8.0 to 3.2 seconds, first paint from 3.7 to 1.9, with the hero visible at the first second instead of the third. Lighthouse across the four key pages from 67 to 91, page weight down 54%. After launch, real-user layout shift rose to 0.31; three causes traced and fixed, lab CLS back to zero.

Before8.0 sAfter3.2 sLargest Contentful Paint · homepage, mobile · Lighthouse 12, both sites uncached

The service behind the result.

Fixed scope, fixed price, and a measurable target before you pay.

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