Backblaze offers 10 GB of storage for free and CloudFlare offers free data transfer from backblaze, combining these services you can host a fast and reliable static website with SSL for little to no cost.

To get started you'll need a public B2 storage bucket in Backblaze and a DNS zone in Cloudflare.

Cloudflare Worker

This worker script proxies requests to the B2 origin and caches the response on Cloudflare.

Add this script under Workers & Pages

export default {
  async fetch(req, env, ctx) {
    // Cached response
    let res = await caches.default.match(req);
    if (res) return res;

    // Fetch object from origin
    let reqPath = new URL(req.url).pathname;
    reqPath = reqPath.replace(/\/$/, ''); // Remove trailing slash
    if (!reqPath.includes('.')) // Check file extension
      reqPath += '/index.html'; // Default to index page

    res = await fetch(env.ORIGIN + reqPath);
    if (res.status === 404) // Object not found
      res = await fetch(env.ORIGIN + '/404.html');

    // Configure content cache
    res = new Response(res.body, res);
    const ttl = res.headers.get('content-type').startsWith('text')
      ? 14400 : 31536000; // Cache text 4 hours, 1 year default
    res.headers.set('cache-control', 'public, max-age=' + ttl);

    // Cache and return response
    ctx.waitUntil(caches.default.put(req, res.clone()));
    return res;
  },
};

Configure these worker settings

1. Route all requests through the worker
2. Custom domain creates a DNS record
3. ORIGIN is the public bucket URL
   https://f002.backblazeb2.com/file/<BUCKET_NAME>