diff --git a/plugins/profullstack-footer/package.json b/plugins/profullstack-footer/package.json
new file mode 100644
index 0000000..4800029
--- /dev/null
+++ b/plugins/profullstack-footer/package.json
@@ -0,0 +1,11 @@
+{
+  "name": "@tsbb/plugin-profullstack-footer",
+  "version": "0.1.0",
+  "private": true,
+  "type": "module",
+  "main": "./src/index.ts",
+  "dependencies": {
+    "@profullstack/footer": "^0.2.6",
+    "@tsbb/plugin-api": "workspace:*"
+  }
+}
diff --git a/plugins/profullstack-footer/plugin.json b/plugins/profullstack-footer/plugin.json
new file mode 100644
index 0000000..7158f47
--- /dev/null
+++ b/plugins/profullstack-footer/plugin.json
@@ -0,0 +1,8 @@
+{
+  "slug": "profullstack-footer",
+  "name": "Profullstack Footer",
+  "description": "The Profullstack network footer: the << Profullstack >> webring row and the built.indie and pwamart badges. Off by default; for boards run by Profullstack.",
+  "author": "Profullstack, Inc.",
+  "homepage": "https://github.com/profullstack/footer",
+  "license": "MIT"
+}
diff --git a/plugins/profullstack-footer/src/index.ts b/plugins/profullstack-footer/src/index.ts
new file mode 100644
index 0000000..6473bb5
--- /dev/null
+++ b/plugins/profullstack-footer/src/index.ts
@@ -0,0 +1,96 @@
+import { definePlugin } from '@tsbb/plugin-api';
+import { footerHtml, latestTemplate } from '@profullstack/footer';
+
+/**
+ * The Profullstack network footer (@profullstack/footer), for boards that
+ * Profullstack runs: the << Profullstack >> webring row, the built.indie and
+ * pwamart badges and the copyright line, under the board's own footer.
+ *
+ * Ships DISABLED. Joining a webring and showing someone else's badges is the
+ * operator's choice, not something an upgrade should decide for every board.
+ *
+ * Two things shape it:
+ *
+ * 1. It renders on the server, into the page. The ring's verifier reads the
+ *    HTML and never runs script, so a footer drawn by the browser would never
+ *    count as a ring member.
+ *
+ * 2. Its CSS is served from the board, not inlined. The board's policy is
+ *    style-src 'self' with no 'unsafe-inline', which refuses the package's
+ *    inline <style>, so the markup is rendered with css:false and the same CSS
+ *    comes from /p/profullstack-footer/footer.css. Both follow the @latest
+ *    template the package fetches (15 min cache), so a footer release reaches
+ *    the board without a redeploy.
+ */
+
+const BADGE_HOSTS = ['https://built.indie.pit.world', 'https://pwamart.com'];
+
+export default definePlugin({
+  manifest: {
+    slug: 'profullstack-footer',
+    name: 'Profullstack Footer',
+    version: '0.1.0',
+    description:
+      'The Profullstack network footer: webring row plus the built.indie and pwamart badges. Off by default; for boards run by Profullstack.',
+    author: 'Profullstack, Inc.',
+    homepage: 'https://github.com/profullstack/footer',
+    license: 'MIT',
+    defaultEnabled: false,
+    capabilities: ['render:pages'],
+    settings: [
+      {
+        key: 'site',
+        label: 'Site homepage',
+        type: 'string',
+        default: '',
+        placeholder: 'https://example.com/',
+        help:
+          'The homepage that is the ring member and the badge listing. Leave empty to use the board URL.',
+      },
+      {
+        key: 'since',
+        label: 'First copyright year',
+        type: 'number',
+        default: 0,
+        help: 'Renders "since–this year" on the copyright line. 0 shows only this year.',
+      },
+    ],
+  },
+
+  setup(ctx) {
+    const site = () => String(ctx.settings.get('site') ?? '').trim() || ctx.url('/');
+
+    // img-src is normally https: already; name the two badge hosts anyway so a
+    // board that narrows img-src keeps its badges.
+    ctx.filter('security:csp', (directives) => {
+      const img = directives['img-src'];
+      if (!img || img.includes('https:') || img.includes('*')) return directives;
+      return { ...directives, 'img-src': [...img, ...BADGE_HOSTS.filter((h) => !img.includes(h))] };
+    });
+
+    ctx.slot('layout:head', () => `<link rel="stylesheet" href="${ctx.url('/p/profullstack-footer/footer.css')}">`);
+
+    ctx.slot(
+      'layout:footer',
+      async () => {
+        const since = Number(ctx.settings.get('since') ?? 0);
+        return footerHtml({ site: site(), css: false, ...(since > 0 ? { since } : {}) });
+      },
+      // Last in the footer, below anything another plugin puts there.
+      1000,
+    );
+
+    ctx.route('GET', '/footer.css', async () => {
+      const template = await latestTemplate();
+      return new Response(template.css, {
+        headers: {
+          'Content-Type': 'text/css; charset=utf-8',
+          'Cache-Control': 'public, max-age=900',
+          'X-Content-Type-Options': 'nosniff',
+        },
+      });
+    });
+
+    ctx.log.info(`Profullstack footer for ${site()}`);
+  },
+});
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index aef005f..43487dd 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -229,6 +229,15 @@ importers:
         specifier: workspace:*
         version: link:../../packages/plugin-api
 
+  plugins/profullstack-footer:
+    dependencies:
+      '@profullstack/footer':
+        specifier: ^0.2.6
+        version: 0.2.6
+      '@tsbb/plugin-api':
+        specifier: workspace:*
+        version: link:../../packages/plugin-api
+
 packages:
 
   '@emnapi/runtime@1.11.3':
@@ -627,6 +636,16 @@ packages:
     engines: {node: '>=20'}
     hasBin: true
 
+  '@profullstack/footer@0.2.6':
+    resolution: {integrity: sha512-BKwbDszAc7e0mYIBiPjgr/5WS8WyDt8IW718s/zW/8pCWOIB1BGwSNs6fmImRSo5kqIjQKUVbXp22jZQ5GEipA==}
+    engines: {node: '>=18'}
+    hasBin: true
+    peerDependencies:
+      react: '>=18'
+    peerDependenciesMeta:
+      react:
+        optional: true
+
   '@profullstack/hqtui@0.5.0':
     resolution: {integrity: sha512-jDwILBmdQx8pQA0ao/tzzty8u5nFNS4XhvU9xXhZvdIaMeiF3HBJIVtP6cS6kigS4lXmHR7sztbb9QJpaWwhig==}
     engines: {bun: '>=1.1', node: '>=22.6'}
@@ -1061,6 +1080,8 @@ snapshots:
 
   '@profullstack/bridges@0.2.0': {}
 
+  '@profullstack/footer@0.2.6': {}
+
   '@profullstack/hqtui@0.5.0': {}
 
   '@profullstack/libsql-pg@0.1.2':
diff --git a/test/plugins.test.ts b/test/plugins.test.ts
index 922b21f..5d42c65 100644
--- a/test/plugins.test.ts
+++ b/test/plugins.test.ts
@@ -9,6 +9,8 @@ process.env.TSBB_DATABASE_URL = `file:${join(scratch, 'board.db')}`;
 process.env.TSBB_BASE_URL = 'http://localhost:3998';
 process.env.TSBB_SESSION_SECRET = 'test-secret';
 process.env.TSBB_MAIL_TRANSPORT = 'console';
+// The footer plugin renders the template bundled with @profullstack/footer, never the CDN.
+process.env.PROFULLSTACK_FOOTER_OFFLINE = '1';
 
 const { seed } = await import('../packages/db/src/seed.ts');
 const { boot } = await import('../apps/server/src/index.ts');
@@ -31,7 +33,7 @@ describe('the plugin host', () => {
   after(() => db.setDb(null));
 
   it('discovers the bundled plugins', () => {
-    assert.deepEqual([...registry.plugins.keys()].sort(), ['crawlproof-ads', 'hello-world', 'openemoji']);
+    assert.deepEqual([...registry.plugins.keys()].sort(), ['crawlproof-ads', 'hello-world', 'openemoji', 'profullstack-footer']);
     assert.deepEqual([...registry.errors.entries()], [], 'no plugin failed to load');
   });
 
@@ -105,6 +107,32 @@ describe('the plugin host', () => {
     await registry.setEnabled('crawlproof-ads', true);
   });
 
+  it('draws the Profullstack footer server-side, only once enabled', async () => {
+    assert.ok(!registry.enabled.has('profullstack-footer'), 'the network footer ships off');
+    let body = await (await app.fetch(new Request(url('/')))).text();
+    assert.ok(!body.includes('pfs-footer'), 'a board that never opted in carries no ring');
+
+    await registry.setEnabled('profullstack-footer', true);
+    await db.run("UPDATE plugins SET config = ? WHERE slug = 'profullstack-footer'", [
+      JSON.stringify({ site: 'https://tsbb.dev/' }),
+    ]);
+    await registry.reload();
+    const response = await app.fetch(new Request(url('/')));
+    body = await response.text();
+    assert.ok(body.includes('rssamplifier.com/ring/profullstack'), 'the webring row is in the HTML');
+    assert.ok(body.includes('built.indie.pit.world/for.svg?site=https://tsbb.dev/'), 'built.indie badge');
+    assert.ok(body.includes('pwamart.com/for.svg'), 'pwamart badge');
+    assert.ok(!/<style[^>]*>\.pfs-footer/.test(body), 'no inline footer style: style-src has no unsafe-inline');
+    assert.ok(body.includes('/p/profullstack-footer/footer.css'), 'the CSS comes from the board');
+
+    const css = await app.fetch(new Request(url('/p/profullstack-footer/footer.css')));
+    assert.equal(css.status, 200);
+    assert.match(css.headers.get('content-type') ?? '', /text\/css/);
+    assert.ok((await css.text()).includes('.pfs-footer'));
+
+    await registry.setEnabled('profullstack-footer', false);
+  });
+
   it('runs a plugin migration and mounts its routes when enabled', async () => {
     await registry.setEnabled('hello-world', true);
     assert.ok(registry.enabled.has('hello-world'));