HTML fragment preview
Stable
Release note
Topcoat reaches the edge
A Rust component rendered this fragment inside a Cloudflare Worker.
Rendered on demand by Topcoat
HTML over the wireBrowser → Worker
Explicit requests, focused fragments.
HTMX posts this form to a Topcoat route. The Worker validates it, renders a replacement card, and sends an HX-Trigger response header.
Request
hx-post=/htmx/previewCompose a release card
Submit to ask the Worker for a new HTML fragment.