diff --git a/docs/offline-tx-signing.md b/docs/offline-tx-signing.md
new file mode 100644
index 0000000000..79309981ec
--- /dev/null
+++ b/docs/offline-tx-signing.md
@@ -0,0 +1,15 @@
+# Offline transaction signing with Geth
+
+Signing transactions offline improves security by keeping your private keys off of internet‑connected machines.
+
+## Prerequisites
+
+- A machine with geth installed (air‑gapped or offline).
+- A machine with network access to broadcast the signed transaction.
+- The account’s private key or keystore file.
+
+## Steps
+
+1. **Prepare the unsigned transaction** on an online machine using:
+   ```bash
+   geth --exec "eth.signTransaction({to: '0x...', value: web3.utils.toWei('1', 'ether'), gas: 21000, gasPrice: web3.utils.toWei('1', 'gwei'), nonce: web3.eth.getTransactionCount('0xYourAddress')})" attach