diff --git a/Cargo.lock b/Cargo.lock
index 13cf9cb..b9d3149 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -131,6 +131,7 @@ dependencies = [
  "futures-channel",
  "gloo 0.10.0",
  "gloo-net 0.4.0",
+ "gloo-storage 0.3.0",
  "serde",
  "serde_json",
  "wasm-bindgen",
diff --git a/Cargo.toml b/Cargo.toml
index 3b21a1f..97e270c 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -21,4 +21,5 @@ wasm-bindgen = "0.2.87"
 wasm-bindgen-futures = "0.4"
 web-sys = { version = "0.3.64", features = ["HtmlInputElement", "HtmlDocument"] }
 gloo = "0.10.0"
-gloo-net = "0.4.0"
\ No newline at end of file
+gloo-net = "0.4.0"
+gloo-storage = "0.3.0"
\ No newline at end of file
diff --git a/src/main.rs b/src/main.rs
index deb0912..88f72b0 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -2,10 +2,10 @@ mod backend;
 mod content;
 mod topbar;
 
-use anyhow::Result;
 use backend::Session;
 use content::{about::About, error, home::Home};
 use gloo::dialogs::alert;
+use gloo_storage::{SessionStorage, Storage};
 use std::ops::Deref;
 use topbar::TopBar;
 use yew::prelude::*;
@@ -70,8 +70,22 @@ fn App() -> Html {
 }
 
 fn main() {
-    if option_env!("NC_BETA_BUILD").is_some() {
-        alert("This is a beta preview!\nThe UI and the backend are subjects to change. Data persistence can't be guaranteed.");
-    }
+    preview_alert();
     yew::Renderer::<App>::new().render();
 }
+
+fn preview_alert() {
+    if option_env!("NC_BETA_BUILD").is_none() {
+        return;
+    }
+
+    if let Ok(value) = SessionStorage::get::<bool>("nc-preview-alert-shown") {
+        if value {
+            return;
+        }
+    }
+
+    SessionStorage::set("nc-preview-alert-shown", true).expect("Failed to set session storage!");
+
+    alert("This is a beta preview!\nThe UI and the backend are subjects to change. Data persistence can't be guaranteed.");
+}