diff --git a/devices/nas/default.nix b/devices/nas/default.nix
index 3061f759..24cdecc5 100644
--- a/devices/nas/default.nix
+++ b/devices/nas/default.nix
@@ -28,6 +28,7 @@ inputs:
         xray = { client.dnsmasq.hosts."git.nas.chn.moe" = "127.0.0.1"; xmuServer = {}; };
         beesd."/" = { hashTableSizeMB = 10 * 128; threads = 4; };
         nfs."/" = [(inputs.topInputs.self.config.dns."chn.moe".getAddress "wg1.pc")];
+        speedtest = {};
       };
     };
   };
diff --git a/flake.lock b/flake.lock
index a0422826..6af940a3 100644
--- a/flake.lock
+++ b/flake.lock
@@ -1190,6 +1190,7 @@
         "rsshub": "rsshub",
         "rycee": "rycee",
         "sops-nix": "sops-nix",
+        "speedtest": "speedtest",
         "sqlite-orm": "sqlite-orm",
         "sticker": "sticker",
         "stickerpicker": "stickerpicker",
@@ -1253,6 +1254,22 @@
         "type": "github"
       }
     },
+    "speedtest": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1739473165,
+        "narHash": "sha256-QimemnDZXlL5Ip+RFD0uxO21Aaol3kCw6Mf/0E3jHQc=",
+        "owner": "librespeed",
+        "repo": "speedtest",
+        "rev": "a1c43977ad9bf73f09f81e8df3c22ea914ab9131",
+        "type": "github"
+      },
+      "original": {
+        "owner": "librespeed",
+        "repo": "speedtest",
+        "type": "github"
+      }
+    },
     "sqlite-orm": {
       "flake": false,
       "locked": {
diff --git a/flake.nix b/flake.nix
index 04d6e04c..a0562c5f 100644
--- a/flake.nix
+++ b/flake.nix
@@ -62,6 +62,7 @@
     mac-style = { url = "github:SergioRibera/s4rchiso-plymouth-theme?lfs=1"; flake = false; };
     phono3py = { url = "github:phonopy/phono3py"; flake = false; };
     sticker = { url = "git+https://git.chn.moe/chn/sticker.git?lfs=1"; flake = false; };
+    speedtest = { url = "github:librespeed/speedtest"; flake = false; };
   };
 
   outputs = inputs: let localLib = import ./flake/lib inputs.nixpkgs.lib; in
diff --git a/flake/dns/config/chn.moe.nix b/flake/dns/config/chn.moe.nix
index 347c07e1..ff81e580 100644
--- a/flake/dns/config/chn.moe.nix
+++ b/flake/dns/config/chn.moe.nix
@@ -4,7 +4,7 @@ let
   {
     autoroute = [ "api" "git" "grafana" "matrix" "peertube" "send" "synapse" "vikunja" "铜锣湾" ];
     nas = [ "initrd.nas" ];
-    office = [ "srv2-node0" "xserverxmu" ];
+    office = [ "srv2-node0" "xserverxmu" "409test" ];
     vps4 = [ "initrd.vps4" "xserver2.vps4" ];
     vps6 =
     [
diff --git a/modules/services/speedtest.nix b/modules/services/speedtest.nix
new file mode 100644
index 00000000..6289cb3e
--- /dev/null
+++ b/modules/services/speedtest.nix
@@ -0,0 +1,24 @@
+inputs:
+{
+  options.nixos.services.speedtest = let inherit (inputs.lib) mkOption types; in mkOption
+  {
+    type = types.nullOr (types.submodule { options =
+    {
+      hostname = mkOption { type = types.nonEmptyStr; default = "409test.chn.moe"; };
+    };});
+    default = null;
+  };
+  config = let inherit (inputs.config.nixos.services) speedtest; in inputs.lib.mkIf (speedtest != null)
+  {
+    nixos.services =
+    {
+      phpfpm.instances.speedtest = {};
+      nginx.https.${speedtest.hostname} = let pkg = inputs.pkgs.localPackages.speedtest; in
+      {
+        global.root = "${pkg}";
+        location."~ ^.+?\.php(/.*)?$".php =
+          { root = "${pkg}"; fastcgiPass = inputs.config.nixos.services.phpfpm.instances.speedtest.fastcgi; };
+      };
+    };
+  };
+}
diff --git a/modules/user/default.nix b/modules/user/default.nix
index c13ccf10..5545ad2f 100644
--- a/modules/user/default.nix
+++ b/modules/user/default.nix
@@ -47,6 +47,7 @@ inputs:
         synapse-synapse = 2009;
         synapse-matrix = 2010;
         hpcstat = 2011;
+        speedtest = 2012;
       };
     };
     gid = mkOption
diff --git a/packages/default.nix b/packages/default.nix
index c36c778f..69ce45b5 100644
--- a/packages/default.nix
+++ b/packages/default.nix
@@ -141,6 +141,7 @@ inputs: rec
     license = inputs.pkgs.callPackage ./lumerical/license.nix
       { src = inputs.topInputs.self.src.lumerical.licenseManager.license; };
   };
+  speedtest = inputs.pkgs.callPackage ./speedtest.nix { src = inputs.topInputs.speedtest; };
 
   fromYaml = content: builtins.fromJSON (builtins.readFile
     (inputs.pkgs.runCommand "toJSON" {}
diff --git a/packages/speedtest.nix b/packages/speedtest.nix
new file mode 100644
index 00000000..b8d698a5
--- /dev/null
+++ b/packages/speedtest.nix
@@ -0,0 +1,12 @@
+{ stdenv, src, }: stdenv.mkDerivation
+{
+  name = "speedtest";
+  inherit src;
+  dontConfigure = true;
+  dontBuild = true;
+  installPhase =
+  ''
+    mkdir -p $out
+    cp -r $src/{index.html,speedtest.js,speedtest_worker.js,favicon.ico,backend} $out
+  '';
+}