diff --git a/src/lib/swarm/discovery.ts b/src/lib/swarm/discovery.ts
index 52ea44e..d826e4d 100644
--- a/src/lib/swarm/discovery.ts
+++ b/src/lib/swarm/discovery.ts
@@ -12,19 +12,11 @@ import {
   getCanonicalSwarmSeedDomain,
   getPublicSwarmDomain,
   isPublicSwarmDomain,
+  resolveNodeAssetUrl,
 } from './node-domain';
 
 const PUBLIC_SWARM_DOMAIN_ERROR = 'Public swarm participation requires a real ICANN domain';
 
-function normalizeOptionalUrl(value: string | null | undefined): string | undefined {
-  if (!value) {
-    return undefined;
-  }
-
-  const trimmed = value.trim();
-  return trimmed.length > 0 ? trimmed : undefined;
-}
-
 /**
  * Build this node's announcement payload
  */
@@ -48,7 +40,7 @@ export async function buildAnnouncement(): Promise<SwarmAnnouncement> {
     if (node) {
       name = node.name;
       description = node.description ?? undefined;
-      logoUrl = normalizeOptionalUrl(node.logoUrl);
+      logoUrl = resolveNodeAssetUrl(node.logoUrl, domain);
       publicKey = node.publicKey ?? '';
       isNsfw = node.isNsfw;
     }
diff --git a/src/lib/swarm/node-domain.test.ts b/src/lib/swarm/node-domain.test.ts
index cf2edaa..095f713 100644
--- a/src/lib/swarm/node-domain.test.ts
+++ b/src/lib/swarm/node-domain.test.ts
@@ -3,6 +3,7 @@ import {
   getCanonicalSwarmSeedDomain,
   getPublicSwarmDomain,
   isPublicSwarmDomain,
+  resolveNodeAssetUrl,
 } from './node-domain';
 
 describe('public swarm domains', () => {
@@ -49,3 +50,17 @@ describe('swarm seed domains', () => {
     expect(getCanonicalSwarmSeedDomain('localhost:43821')).toBeNull();
   });
 });
+
+describe('node asset URLs', () => {
+  it('resolves a relative logo path against the node domain', () => {
+    expect(
+      resolveNodeAssetUrl('/api/node/logo?v=1784095823196', 'batorbros.bond')
+    ).toBe('https://batorbros.bond/api/node/logo?v=1784095823196');
+  });
+
+  it('preserves an absolute HTTPS asset URL', () => {
+    expect(
+      resolveNodeAssetUrl('https://media.example.org/node/logo.png', 'batorbros.bond')
+    ).toBe('https://media.example.org/node/logo.png');
+  });
+});
diff --git a/src/lib/swarm/node-domain.ts b/src/lib/swarm/node-domain.ts
index ae87de7..a4d8a07 100644
--- a/src/lib/swarm/node-domain.ts
+++ b/src/lib/swarm/node-domain.ts
@@ -56,6 +56,23 @@ export function isPublicSwarmDomain(value: string | null | undefined): boolean {
   return getPublicSwarmDomain(value) !== null;
 }
 
+export function resolveNodeAssetUrl(
+  value: string | null | undefined,
+  nodeDomain: string
+): string | undefined {
+  const trimmed = value?.trim();
+  if (!trimmed) return undefined;
+
+  try {
+    const resolved = new URL(trimmed, `https://${normalizeNodeDomain(nodeDomain)}`);
+    return resolved.protocol === 'http:' || resolved.protocol === 'https:'
+      ? resolved.toString()
+      : undefined;
+  } catch {
+    return undefined;
+  }
+}
+
 /**
  * Resolve retired bootstrap hostnames to the node identity they represent.
  * This keeps upgraded nodes working even before their persisted seed rows are