diff --git a/src-tauri/src/extension/web/mod.rs b/src-tauri/src/extension/web/mod.rs
index 14426a1..a978519 100644
--- a/src-tauri/src/extension/web/mod.rs
+++ b/src-tauri/src/extension/web/mod.rs
@@ -33,6 +33,43 @@ pub struct WebFetchResponse {
     pub url: String,
 }
 
+#[tauri::command]
+pub async fn extension_web_open(
+    url: String,
+    public_key: String,
+    name: String,
+    state: State<'_, AppState>,
+) -> Result<(), ExtensionError> {
+    // Get extension to validate it exists
+    let _extension = state
+        .extension_manager
+        .get_extension_by_public_key_and_name(&public_key, &name)?
+        .ok_or_else(|| ExtensionError::NotFound {
+            public_key: public_key.clone(),
+            name: name.clone(),
+        })?;
+
+    // Validate URL format
+    let parsed_url = url::Url::parse(&url).map_err(|e| ExtensionError::WebError {
+        reason: format!("Invalid URL: {}", e),
+    })?;
+
+    // Only allow http and https URLs
+    let scheme = parsed_url.scheme();
+    if scheme != "http" && scheme != "https" {
+        return Err(ExtensionError::WebError {
+            reason: format!("Unsupported URL scheme: {}. Only http and https are allowed.", scheme),
+        });
+    }
+
+    // Open URL in default browser using tauri-plugin-opener
+    tauri_plugin_opener::open_url(&url, None::<&str>).map_err(|e| ExtensionError::WebError {
+        reason: format!("Failed to open URL in browser: {}", e),
+    })?;
+
+    Ok(())
+}
+
 #[tauri::command]
 pub async fn extension_web_fetch(
     url: String,
diff --git a/src-tauri/src/lib.rs b/src-tauri/src/lib.rs
index 031d8f0..6002597 100644
--- a/src-tauri/src/lib.rs
+++ b/src-tauri/src/lib.rs
@@ -79,6 +79,7 @@ pub fn run() {
             extension::database::extension_sql_execute,
             extension::database::extension_sql_select,
             extension::web::extension_web_fetch,
+            extension::web::extension_web_open,
             extension::get_all_dev_extensions,
             extension::get_all_extensions,
             extension::get_extension_info,
diff --git a/src/composables/handlers/web.ts b/src/composables/handlers/web.ts
index 61f80ed..e6d9ea8 100644
--- a/src/composables/handlers/web.ts
+++ b/src/composables/handlers/web.ts
@@ -16,6 +16,10 @@ export async function handleWebMethodAsync(
     return await handleWebFetchAsync(params, extension)
   }
 
+  if (method === 'haextension.web.open') {
+    return await handleWebOpenAsync(params, extension)
+  }
+
   throw new Error(`Unknown web method: ${method}`)
 }
 
@@ -65,3 +69,28 @@ async function handleWebFetchAsync(
     throw new Error('Web request failed with unknown error')
   }
 }
+
+async function handleWebOpenAsync(
+  params: Record<string, unknown>,
+  extension: IHaexHubExtension,
+) {
+  const url = params.url as string
+
+  if (!url) {
+    throw new Error('URL is required')
+  }
+
+  try {
+    // Call Rust backend to open URL in default browser
+    await invoke<void>('extension_web_open', {
+      url,
+      publicKey: extension.publicKey,
+      name: extension.name,
+    })
+  } catch (error) {
+    if (error instanceof Error) {
+      throw new Error(`Failed to open URL: ${error.message}`)
+    }
+    throw new Error('Failed to open URL with unknown error')
+  }
+}