Relume is an AI-powered website planning and component library tool for Webflow and React that generates complete website sitemaps and wireframes from a prompt, then lets designers populate them with a library of 1,000+ pre-built, accessible UI components. Rather than being a standalone publishing platform, Relume is a design productivity tool — it outputs to Webflow or React code, meaning published sites may be on either of those platforms. Sites built with Relume components are identifiable through resources loaded from library.relume.io and the distinctive rl- prefixed CSS class naming convention on Relume's design system components. Relume is used by Webflow agencies and developers who want to accelerate the design-to-development workflow.
Paste any URL to instantly detect whether it was built with Relume. Our engine checks 5 technical signals.
Relume is used across many industries. These are the most common website types built on this platform:
SaaS companies
Beautiful landing pages without an engineering team
Freelance designers
Deliver polished client sites with full design control
Marketing agencies
Fast iteration on campaign microsites
Startups
Launch a compelling product page in hours
Every Relume website leaves distinctive technical fingerprints. Here's what to look for:
CDN Domains
Network requests to these domains are a reliable indicator:
library\.relume\.ioJavaScript Patterns
2 script patterns linked to Relume
HTML Attributes
2 HTML patterns in the page source
Explore how Relume compares to similar ai website builder tools: