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diff --git a/_tools/gpon-omci-vlan-parser.md b/_tools/gpon-omci-vlan-parser.md
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+++ b/_tools/gpon-omci-vlan-parser.md
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+---
+title: GPON OMCI VLAN Table parser
+has_children: false
+description: Tool for parse the GPON OMCI VLAN Table (ME 171)
+layout: default
+---
+
+<h1>VLAN TABLE PARSER</h1>
+<form id="vlan-table-parser" novalidate>
+    <div class="form-floating mb-3">
+        <input type="text" class="form-control" placeholder="VLAN TABLE in HEX" name="vlan-table-hex" id="vlan-table-hex" required>
+        <label for="vlan-table-hex">VLAN TABLE in HEX</label>
+        <div class="invalid-feedback">
+            Please provide a valid input text.
+        </div>
+    </div>
+    <div class="mb-3">
+        <input type="submit" class="btn btn-primary" value="Decode!">
+    </div>
+    <div class="form-floating mb-3" id="to-place-table"></div>
+</form>
+
+<script type="text/javascript" src="/assets/js/omci-vlan.js"></script>
+<script>          
+    function fillVlanTable(table, vlanTableRule) {
+        const tableNames = ["Filter outer priority",
+                            "Filter outer VID",
+                            "Filter outer TPID",
+                            "Filter inner priority",
+                            "Filter inner VID",
+                            "Filter inner TPID",
+                            "Filter ether type",
+                            "Treatment tags to remove",
+                            "Treatment outer priority",
+                            "Treatment outer VID",
+                            "Treatment outer TPID",
+                            "Treatment inner priority",
+                            "Treatment inner VID",
+                            "Treatment inner TPID"];
+
+    
+        for (var j = 0; j < 14; j++) {
+            var row = table.insertRow(j);
+            var cell1 = row.insertCell(0);
+            var cell2 = row.insertCell(1);
+            
+            cell1.innerHTML = tableNames[j];
+            cell2.innerHTML = vlanTableRule[j];
+        }
+    }
+    
+    function makeVlanTables(formToPlaceTable, vlanTable) {
+        for (const vlanRule of vlanTable) {
+            var div = document.createElement('div');
+            div.classList = "table-wrapper";
+            var table = document.createElement('table');
+            div.appendChild(table);
+            fillVlanTable(table, vlanRule);
+            formToPlaceTable.appendChild(div);
+        }
+    }
+            
+    var vlanTableForm = document.getElementById('vlan-table-parser');
+    vlanTableForm.addEventListener('submit',(event) => {
+        if (!vlanTableForm.checkValidity()) {
+            event.preventDefault();
+            [...vlanTableForm.elements].map(e => e.parentNode).forEach(e => e.classList.toggle('was-validated', true));
+        } else {
+            event.preventDefault();
+            [...vlanTableForm.elements].map(e => e.parentNode).forEach(e => e.classList.toggle('was-validated', false));
+            var fomrdata = new FormData(vlanTableForm);
+            const hexString = fomrdata.get('vlan-table-hex');
+            const vlanTable = vlanTableParse(hexString);
+            const formToPlaceTable = document.getElementById('to-place-table');
+            formToPlaceTable.innerHTML = '';
+            makeVlanTables(formToPlaceTable, vlanTable);
+        }
+    });
+</script>
diff --git a/assets/js/omci-vlan.js b/assets/js/omci-vlan.js
new file mode 100644
index 0000000..e28642c
--- /dev/null
+++ b/assets/js/omci-vlan.js
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+/* Copyright (C) Ernesto Castellotti <mail@ernestocastellotti.it>
+ * SPDX-License-Identifier: MPL-2.0-no-copyleft-exception
+*/
+
+// Convert hex string to binary representation
+function hex2bin(hexString){
+    var result = "";
+    hexString = hexString.replace(/0x/g, "").replace(/ /g, '').toLowerCase();
+    
+    for(const hexChr of hexString) {
+        const bin = parseInt(hexChr, 16).toString(2).padStart(4, '0');
+        
+        if (!bin.isNaN) {
+            result += bin;
+        } else {
+            throw new Error("The hex string is not valid!");
+        }
+    }
+
+    return result;
+}
+
+// Helper function to splice binary array and convert to decimal
+function binSpliceToDec(binArray, len) {
+    const result = binArray.splice(0, len);
+    return parseInt(result.join(""), 2);
+}
+
+// GPON OMCI VLAN Table parser
+function vlanTableParse(hexString) {
+    const binaryArray = hex2bin(hexString).split('');
+    var result = new Array();
+        
+    while(binaryArray.length > 0) {
+        var vlanRule = new Array();
+            
+        vlanRule.push(binSpliceToDec(binaryArray, 4));
+        vlanRule.push(binSpliceToDec(binaryArray, 13));
+        vlanRule.push(binSpliceToDec(binaryArray, 3));
+        binaryArray.splice(0, 12); // Padding
+        vlanRule.push( binSpliceToDec(binaryArray, 4));
+        vlanRule.push(binSpliceToDec(binaryArray, 13));
+        vlanRule.push(binSpliceToDec(binaryArray, 3));
+        binaryArray.splice(0, 8); // Padding
+        vlanRule.push(binSpliceToDec(binaryArray, 4));
+        vlanRule.push(binSpliceToDec(binaryArray, 2));
+        binaryArray.splice(0, 10); // Padding
+        vlanRule.push(binSpliceToDec(binaryArray, 4));
+        vlanRule.push(binSpliceToDec(binaryArray, 13));
+        vlanRule.push(binSpliceToDec(binaryArray, 3));
+        binaryArray.splice(0, 12); // Padding
+        vlanRule.push(binSpliceToDec(binaryArray, 4));
+        vlanRule.push(binSpliceToDec(binaryArray, 13));
+        vlanRule.push(binSpliceToDec(binaryArray, 3));
+        
+        result.push(vlanRule);
+    }
+        
+    return result;
+}