diff --git a/Package/JavaScript/README.md b/Package/JavaScript/README.md
new file mode 100644
index 0000000..065029a
--- /dev/null
+++ b/Package/JavaScript/README.md
@@ -0,0 +1,36 @@
+# Bellande Format JavaScript Example
+
+```
+// Example usage
+const bellandeFormatter = new BellandeFormat();
+
+// Parse a Bellande file
+const parsedData = bellandeFormatter.parseBellande('path/to/your/file.bellande');
+console.log(parsedData);
+
+// Write data to a Bellande file
+const dataToWrite = { key: 'value', list: [1, 2, 3] };
+bellandeFormatter.writeBellande(dataToWrite, 'path/to/output/file.bellande');
+```
+
+## Website NPM
+- https://www.npmjs.com/package/bellande_format
+
+### Installation
+- `npm i bellande_format`
+
+
+```
+Name: bellande_format
+Version: 0.1.0
+Summary: File type Formats
+Home-page: github.com/RonaldsonBellande/bellande_format
+Author: Ronaldson Bellande
+Author-email: ronaldsonbellande@gmail.com
+License: GNU General Public License v3.0
+Requires: numpy
+Required-by:
+```
+
+## License
+This Algorithm or Models is distributed under the [Creative Commons Attribution-ShareAlike 4.0 International License](http://creativecommons.org/licenses/by-sa/4.0/), see [LICENSE](https://github.com/RonaldsonBellande/bellande_format/blob/main/LICENSE) and [NOTICE](https://github.com/RonaldsonBellande/bellande_format/blob/main/LICENSE) for more information.
diff --git a/Package/JavaScript/package.json b/Package/JavaScript/package.json
new file mode 100644
index 0000000..23764c0
--- /dev/null
+++ b/Package/JavaScript/package.json
@@ -0,0 +1,19 @@
+{
+  "name": "bellande_format",
+  "version": "0.1.1",
+  "description": "File type Formats",
+  "main": "src/bellande_parser.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "repository": {
+    "type": "git",
+    "url": "github.com/RonaldsonBellande/bellande_format"
+  },
+  "keywords": [
+    "Bellande",
+    "Format"
+  ],
+  "author": "Ronaldson Bellande",
+  "license": "GNU General Public License v3.0"
+}
diff --git a/Package/JavaScript/src/bellande_parser.js b/Package/JavaScript/src/bellande_parser.js
new file mode 100644
index 0000000..c86feb1
--- /dev/null
+++ b/Package/JavaScript/src/bellande_parser.js
@@ -0,0 +1,97 @@
+const fs = require('fs');
+
+class BellandeFormat {
+  parseBellande(filePath) {
+    const content = fs.readFileSync(filePath, 'utf8');
+    const lines = content.split('\n');
+    return this.parseLines(lines);
+  }
+
+  parseLines(lines) {
+    const result = {};
+    const stack = [[-1, result]];
+
+    for (const line of lines) {
+      const stripped = line.trim();
+      if (!stripped || stripped.startsWith('#')) continue;
+
+      const indent = line.length - line.trimLeft().length;
+      while (stack.length && indent <= stack[stack.length - 1][0]) {
+        stack.pop();
+      }
+
+      const parent = stack[stack.length - 1][1];
+
+      if (stripped.includes(':')) {
+        const [key, value] = stripped.split(':').map(s => s.trim());
+        if (value) {
+          parent[key] = this.parseValue(value);
+        } else {
+          const newDict = {};
+          parent[key] = newDict;
+          stack.push([indent, newDict]);
+        }
+      } else if (stripped.startsWith('-')) {
+        const value = stripped.slice(1).trim();
+        if (Array.isArray(parent)) {
+          parent.push(this.parseValue(value));
+        } else {
+          const newList = [this.parseValue(value)];
+          const lastKey = Object.keys(parent).pop();
+          parent[lastKey] = newList;
+          stack.push([indent, newList]);
+        }
+      }
+    }
+
+    return result;
+  }
+
+  parseValue(value) {
+    if (value.toLowerCase() === 'true') return true;
+    if (value.toLowerCase() === 'false') return false;
+    if (value.toLowerCase() === 'null') return null;
+    if (value.startsWith('"') && value.endsWith('"')) return value.slice(1, -1);
+    if (/^-?\d+$/.test(value)) return parseInt(value, 10);
+    if (/^-?\d*\.\d+$/.test(value)) return parseFloat(value);
+    return value;
+  }
+
+  writeBellande(data, filePath) {
+    const content = this.toBellandeString(data);
+    fs.writeFileSync(filePath, content);
+  }
+
+  toBellandeString(data, indent = 0) {
+    if (typeof data === 'object' && data !== null) {
+      if (Array.isArray(data)) {
+        return data.map(item => `${' '.repeat(indent)}- ${this.toBellandeString(item, indent + 2)}`).join('\n');
+      } else {
+        return Object.entries(data)
+          .map(([key, value]) => {
+            if (typeof value === 'object' && value !== null) {
+              return `${' '.repeat(indent)}${key}:\n${this.toBellandeString(value, indent + 2)}`;
+            } else {
+              return `${' '.repeat(indent)}${key}: ${this.formatValue(value)}`;
+            }
+          })
+          .join('\n');
+      }
+    } else {
+      return this.formatValue(data);
+    }
+  }
+
+  formatValue(value) {
+    if (typeof value === 'string') {
+      return value.includes(' ') || value.includes(':') ? `"${value}"` : value;
+    }
+    if (typeof value === 'boolean') {
+      return value.toString();
+    }
+    if (value === null) {
+      return 'null';
+    }
+    return value.toString();
+  }
+}
diff --git a/Package/Python/README.md b/Package/Python/README.md
index ae3a3e4..c9cb265 100644
--- a/Package/Python/README.md
+++ b/Package/Python/README.md
@@ -1,4 +1,4 @@
-# Bellande Format Example
+# Bellande Format Python Example
 
 ```
 bellande_formatter = Bellande_Format()