Prerender.io – Bubble (Cloudflare Worker)

A Cloudflare Worker that proxies your Bubble app and routes bot traffic through Prerender.io for SEO rendering.

How it works

• Regular users are proxied transparently to your Bubble app (BUBBLE_UPSTREAM)
• Search engine bots and crawlers are routed to Prerender.io for server-side rendered HTML
• Canonical tags are injected/replaced to point to the public URL
• Redirects from the upstream are rewritten to use your public hostname

Setup

1. Deploy worker.js as a Cloudflare Worker
2. Set the following environment variables in your Worker settings:

Variable	Description
BUBBLE_UPSTREAM	Your Bubble app URL (e.g. https://yourapp.bubbleapps.io)
PRERENDER_TOKEN	Your Prerender.io token

Requirements

• Cloudflare Workers (supports HTMLRewriter)