diff --git a/pkgs/tools/text/validator-nu/default.nix b/pkgs/tools/text/validator-nu/default.nix
new file mode 100644
index 00000000000..43f20db4a6d
--- /dev/null
+++ b/pkgs/tools/text/validator-nu/default.nix
@@ -0,0 +1,68 @@
+{ fetchFromGitHub
+, git
+, jdk_headless
+, jre_headless
+, makeWrapper
+, python3
+, stdenvNoCC
+, lib
+}:
+
+let
+  pname = "validator-nu";
+  version = "22.9.29";
+
+  src = fetchFromGitHub {
+    owner = "validator";
+    repo = "validator";
+    rev = version;
+    fetchSubmodules = true;
+    hash = "sha256-NH/OyaKGITAL2yttB1kmuKVuZuYzhVuS0Oohj1N4icI=";
+  };
+
+  deps = stdenvNoCC.mkDerivation {
+    pname = "${pname}-deps";
+    inherit version src;
+
+    nativeBuildInputs = [ git jdk_headless python3 python3.pkgs.certifi ];
+
+    buildPhase = ''
+      python checker.py dldeps
+    '';
+
+    installPhase = ''
+      mkdir "$out"
+      mv dependencies extras "$out"
+    '';
+
+    outputHashMode = "recursive";
+    outputHash = "sha256-LPtxpUd7LAYZHJL7elgcZOTaTgHqeqquiB9hiuajA6c=";
+  };
+
+in
+stdenvNoCC.mkDerivation rec {
+  inherit pname version src;
+
+  nativeBuildInputs = [ git jdk_headless makeWrapper python3 ];
+
+  buildPhase = ''
+    ln -s '${deps}/dependencies' '${deps}/extras' .
+    JAVA_HOME='${jdk_headless}' python checker.py build
+  '';
+
+  installPhase = ''
+    mkdir -p "$out/bin" "$out/share/java"
+    mv build/dist/vnu.jar "$out/share/java/"
+    makeWrapper "${jre_headless}/bin/java" "$out/bin/vnu" \
+      --add-flags "-jar '$out/share/java/vnu.jar'"
+  '';
+
+  meta = with lib; {
+    description = "Helps you catch problems in your HTML/CSS/SVG";
+    homepage = "https://validator.github.io/validator/";
+    license = licenses.mit;
+    maintainers = with maintainers; [ andersk ];
+    mainProgram = "vnu";
+    sourceProvenance = with sourceTypes; [ binaryBytecode fromSource ];
+  };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index bdbc3f6410e..a557ace9057 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -12643,6 +12643,8 @@ with pkgs;
 
   vacuum = callPackage ../applications/networking/instant-messengers/vacuum {};
 
+  validator-nu = callPackage ../tools/text/validator-nu { };
+
   vampire = callPackage ../applications/science/logic/vampire {};
 
   variety = callPackage ../applications/misc/variety {};