HighLevel Forms Add 500 ms-1 s Blocking Time — Need Lightweight, Async Embed
D
Daniel Kress
Quick description (copy-paste):
When a HighLevel form is dropped onto a page the builder injects hlforms.js + three helper scripts + two style sheets, totalling ≈ 300 KB and blocking the main thread for 500 ms–1 s. Largest Contentful Paint and Total Blocking Time tank, especially on mobile. Agencies routinely resort to iframes or external tools to stay in the green.
Why it matters
Poor Core Web Vitals → lost ad quality scores and SEO.
Users abandon pages while the form JS blocks interaction.
Work-arounds break styling and hurt conversion tracking.
Requested fix
Ship a “Lite / Async” option that loads the form script after DOMContentLoaded, or on first visibility (Intersection Observer).
Inline critical CSS (two rules) and defer the rest.
Offer a static HTML fallback (similar to HubSpot’s “raw embed”) for simple forms that don’t need reCAPTCHA or progressive profiling.
One change will slash blocking time, let pages pass Lighthouse, and keep teams inside the HighLevel ecosystem instead of bolting on third-party forms.
Log In