diff --git a/src/fn.py b/src/fn.py
index f9bfc0f..1e48ae1 100644
--- a/src/fn.py
+++ b/src/fn.py
@@ -1,5 +1,20 @@
 import flask
+from htmlpy import Link
 
 
 def is_onion(req: flask.globals.request) -> bool:
     return req.host.endswith("onion")
+
+
+def is_i2p(req: flask.globals.request) -> bool:
+    return req.host.endswith("i2p")
+
+
+def dynamic_link(
+    inner, normal: str, onion: str, i2p: str, req: flask.globals.request
+) -> Link:
+    if is_onion(req):
+        return Link(onion, inner)
+    if is_i2p(req):
+        return Link(i2p, inner)
+    return Link(normal, inner)