diff --git a/public/.well-known/openwebring.json b/public/.well-known/openwebring.json
new file mode 100644
index 0000000..dc01f9d
--- /dev/null
+++ b/public/.well-known/openwebring.json
@@ -0,0 +1,6 @@
+{
+  "openwebring": "0.1",
+  "site": { "url": "https://datamart.help/", "name": "datamart.help" },
+  "made_by": "both",
+  "rings": [{ "ring": "https://rssamplifier.com/ring/profullstack", "slug": "datamart-help" }]
+}
diff --git a/src/app/globals.css b/src/app/globals.css
index 3b84bd1..f6a67d2 100644
--- a/src/app/globals.css
+++ b/src/app/globals.css
@@ -127,3 +127,4 @@ dl.facts dd { margin: 0; overflow-wrap: anywhere; }
 .site-footer { border-top: 1px solid var(--line); padding: 1.5rem 0 2.5rem; color: var(--muted); font-size: 0.85rem; }
 .site-footer nav { display: flex; gap: 1rem; flex-wrap: wrap; margin-bottom: 0.75rem; }
 .site-footer a { color: var(--muted); }
+.site-footer nav.webring { justify-content: center; gap: 0.75rem; margin: 0.75rem 0 0; }
diff --git a/src/app/layout.tsx b/src/app/layout.tsx
index a7111f3..1e9ff8c 100644
--- a/src/app/layout.tsx
+++ b/src/app/layout.tsx
@@ -67,6 +67,12 @@ export default function RootLayout({ children }: { children: React.ReactNode })
               <a href="https://github.com/profullstack/datamart.help">Source</a>
             </nav>
             <p>{DISCLOSURE}</p>
+            <nav className="webring" aria-label="Profullstack webring">
+              <a href="https://rssamplifier.com/ring/profullstack/previous?from=https%3A%2F%2Fdatamart.help%2F" rel="prev" title="Previous site">&lt;&lt;</a>
+              <a href="https://rssamplifier.com/ring/profullstack">Profullstack</a>
+              <a href="https://rssamplifier.com/ring/profullstack/next?from=https%3A%2F%2Fdatamart.help%2F" rel="next" title="Next site">&gt;&gt;</a>
+              <a href="https://rssamplifier.com/ring/profullstack/random?from=https%3A%2F%2Fdatamart.help%2F" title="Random site" aria-label="Random site">{"⚄"}</a>
+            </nav>
           </div>
         </footer>
         <RegisterServiceWorker />