Website Builders vs. Traditional CMS — A Detection-Relevant Distinction
A website builder is a closed, hosted platform where design, content, and hosting are bundled together — Wix, Squarespace, Webflow, Carrd, and Framer all fit this model. A traditional CMS like WordPress is open and self-hosted, where the platform provides the software but hosting, themes, and plugins are chosen independently. This distinction matters for detection because builders produce far more consistent, predictable technical signatures — every Wix site shares the same core asset infrastructure, while every WordPress site's hosting and theme choices vary independently.
This is why builder detection tends to be higher-confidence than broader CMS detection: there's less variation to account for when the entire platform is closed and standardized.
Newer Builders and Their Detection Signatures
Framer has grown quickly as a design-first website builder aimed at a more design-conscious audience than Wix or Squarespace, and produces sites with distinctive framerusercontent.com asset domains and Framer-specific data attributes in the HTML. Carrd, popular for simple single-page sites (landing pages, link-in-bio pages, personal profile pages), has a minimal, distinctive HTML structure and characteristic asset loading pattern that's straightforward to identify given how few elements a typical Carrd page contains.
Both of these newer builders are detected the same way as more established platforms — through their fixed asset domain and characteristic HTML/CSS patterns — but their signature libraries require more frequent updates than long-established platforms like Wix or Squarespace, since both are still evolving their underlying technical implementation more actively.