diff --git a/mac/scripts/build-web-frontend.sh b/mac/scripts/build-web-frontend.sh
index 5d983449..9404229e 100755
--- a/mac/scripts/build-web-frontend.sh
+++ b/mac/scripts/build-web-frontend.sh
@@ -62,17 +62,9 @@ fi
 
 echo "Building web frontend..."
 
-# Setup PATH for Node.js
-export PATH="/opt/homebrew/bin:/usr/local/bin:$PATH"
-
-# Load NVM if available
-if [ -s "$HOME/.nvm/nvm.sh" ]; then
-    export NVM_DIR="$HOME/.nvm"
-    . "$NVM_DIR/nvm.sh"
-fi
-
-# Put volta on the path if it exists
-export PATH="$HOME/.volta/bin:$PATH"
+# Setup Node.js PATH (Homebrew, nvm, Volta, fnm)
+SCRIPT_DIR="$( cd "$( dirname "$0" )" && pwd )"
+source "${SCRIPT_DIR}/node-path-setup.sh"
 
 # Export CI to prevent interactive prompts
 export CI=true
diff --git a/mac/scripts/install-node.sh b/mac/scripts/install-node.sh
index 8ffca40e..aa754ea9 100755
--- a/mac/scripts/install-node.sh
+++ b/mac/scripts/install-node.sh
@@ -16,27 +16,9 @@ fi
 
 echo "Checking for Node.js..."
 
-# Add common Node.js installation paths to PATH
-# Homebrew on Apple Silicon
-if [ -d "/opt/homebrew/bin" ]; then
-    export PATH="/opt/homebrew/bin:$PATH"
-fi
-
-# Homebrew on Intel Macs
-if [ -d "/usr/local/bin" ]; then
-    export PATH="/usr/local/bin:$PATH"
-fi
-
-# NVM default location
-if [ -s "$HOME/.nvm/nvm.sh" ]; then
-    export NVM_DIR="$HOME/.nvm"
-    . "$NVM_DIR/nvm.sh"
-fi
-
-# Volta
-if [ -d "$HOME/.volta/bin" ]; then
-    export PATH="$HOME/.volta/bin:$PATH"
-fi
+# Load Node.js environment managers (Homebrew, nvm, Volta, fnm)
+SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]:-}" )" && pwd )"
+source "${SCRIPT_DIR}/node-path-setup.sh"
 
 # Check if Node.js is available
 if command -v node &> /dev/null; then
@@ -72,6 +54,7 @@ else
     echo "  - Download from: https://nodejs.org/"
     echo "  - Using nvm: nvm install 20"
     echo "  - Using volta: volta install node@20"
+    echo "  - Using fnm: fnm install 20"
     echo ""
     echo "PATH checked: $PATH"
     exit 1
diff --git a/mac/scripts/node-path-setup.sh b/mac/scripts/node-path-setup.sh
new file mode 100644
index 00000000..5aa371e7
--- /dev/null
+++ b/mac/scripts/node-path-setup.sh
@@ -0,0 +1,39 @@
+#!/bin/bash
+# node-path-setup.sh
+# -------------------------------------------------------------
+# Common helper to ensure Node.js managers add their binaries to
+# PATH for VibeTunnel build scripts. Source this instead of
+# duplicating logic in every script.
+#
+# Usage (Bash):
+#   SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]:-${0}}")" && pwd)"
+#   source "${SCRIPT_DIR}/node-path-setup.sh"
+# Usage (Zsh):
+#   SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+#   source "${SCRIPT_DIR}/node-path-setup.sh"
+# -------------------------------------------------------------
+
+# Homebrew (Apple Silicon & Intel)
+if [ -d "/opt/homebrew/bin" ]; then
+    export PATH="/opt/homebrew/bin:$PATH"
+fi
+if [ -d "/usr/local/bin" ]; then
+    export PATH="/usr/local/bin:$PATH"
+fi
+
+# NVM default location
+if [ -s "$HOME/.nvm/nvm.sh" ]; then
+    export NVM_DIR="$HOME/.nvm"
+    # shellcheck source=/dev/null
+    . "$NVM_DIR/nvm.sh"
+fi
+
+# Volta
+if [ -d "$HOME/.volta/bin" ]; then
+    export PATH="$HOME/.volta/bin:$PATH"
+fi
+
+# fnm (Fast Node Manager)
+if command -v fnm &> /dev/null; then
+    eval "$(fnm env)"
+fi