We built swup+fragment-plugin to visually enhance classic websites

In plain words

Swup+fragment-plugin is a JavaScript library that enhances traditional multi-page websites into single-page applications while maintaining search engine crawlability and accessibility. It enables fragment-based navigation comparable to routing in modern frameworks like React or Vue, works independently of backend technology, and integrates well with DOM-manipulation tools like Alpine.js and jQuery. Designed for developers who want dynamic user experiences without server-side rendering overhead or tight frontend-backend coupling.

written from the facts on this page · September 2026

From the sources

A demo site for the swup fragment plugin

Under Characters , you can find a filterable list of super mario characters. Note how only the #characters-list is replaced when filtering characters. How a single character opens in a #character-modal . How only the #character-detail is being replaced when navigating between characters, without touching any otherfrom swup-fragment-plugin.netlify.app

In the maker’s words, at launch

## TL;DR - Progressively enhance your classic website / MPA to a single page app. - Support for fragment visits, comparable to nested routes in React or Vue. - Keep your site crawlable and indexable without any of the overhead of SSR. - No tight coupling of back- and frontend. Use the CMS / Framework &#x2F…

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