diff --git a/main.js b/main.js
index d8462d6..d576e91 100644
--- a/main.js
+++ b/main.js
@@ -1291,6 +1291,15 @@ function pushall()
 	return Promise.all(list);
 }
 
+function fetchandserialize(guid)
+{
+	return queryremote({action: "fetch", name: guid})
+	.then(content =>
+	{
+		localStorage.setItem(guid, content);
+	});
+}
+
 function fetch()
 {
 	return new Promise(function(resolve)
@@ -1311,26 +1320,42 @@ function fetch()
 				{
 					if (!filecontent)
 					{
-						return pushall();
+						pushall().then(resolve);
 					}
 					else
 					{
-						// compare and fetch modified and serialize all that
-					}
+						var localindex = JSON.parse(localStorage.getItem("index"));
+						var remoteindex = JSON.parse(filecontent);
 
-				}).catch(err =>
+						var list = [];
+						Object.keys(remoteindex).forEach(guid =>
+						{
+							if (!localindex[guid] || localindex[guid].lastchanged < remoteindex[guid].lastchanged)
+							{
+								list.push(fetchandserialize(guid));
+							}
+						});
+
+						Promise.all(list).then( () =>
+						{
+							localStorage.setItem("index", JSON.stringify(remoteindex));
+							resolve();
+						});
+					}
+				})
+				.catch(err =>
+				{
+					if (err == "error: authent")
 					{
-						if (err == "error: authent")
-						{
-							settings.password = prompt("Password: ", settings.password);
-							savesettings();
-							init();
-						}
-						else
-						{
-							showtemporaryinfo(err);
-						}
-					});
+						settings.password = prompt("Password: ", settings.password);
+						savesettings();
+						init();
+					}
+					else
+					{
+						showtemporaryinfo(err);
+					}
+				});
 			}
 		}
 		else