diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..1e8ff0f
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,6 @@
+node_modules/
+npm-debug.log
+data/*.db
+data/*.db-journal
+.env
+.DS_Store
diff --git a/barcode.js b/barcode.js
new file mode 100644
index 0000000..ed128ce
--- /dev/null
+++ b/barcode.js
@@ -0,0 +1,165 @@
+/**
+ * Open Food Facts Barcode API integration
+ * Extracts product name, brand, package quantity & unit, image, and category.
+ * Intentionally omits macro nutrients to keep interface clean & fast.
+ */
+
+function parseQuantityString(quantityStr) {
+  if (!quantityStr || typeof quantityStr !== 'string') {
+    return { quantity: 1, unit: 'pcs' };
+  }
+
+  const clean = quantityStr.trim().toLowerCase();
+
+  // Pattern: e.g. "250g", "250 g", "1.5 kg", "1,5kg", "500 ml", "1 l", "1.5l", "6x100g", "4 x 125 g"
+  // Multi-pack: e.g. 6 x 100 g -> 600 g or total 6 pcs
+  const multiMatch = clean.match(/^(\d+)\s*[xX*]\s*([\d.,]+)\s*([a-zA-Z%]+)?/);
+  if (multiMatch) {
+    const count = parseInt(multiMatch[1], 10);
+    const itemQty = parseFloat(multiMatch[2].replace(',', '.'));
+    const itemUnit = multiMatch[3] ? normalizeUnit(multiMatch[3]) : 'g';
+    if (!isNaN(count) && !isNaN(itemQty)) {
+      return {
+        quantity: Math.round(count * itemQty),
+        unit: itemUnit,
+        raw: quantityStr
+      };
+    }
+  }
+
+  // Single quantity: e.g. "250 g", "500ml", "1kg", "0.75 l"
+  const singleMatch = clean.match(/^([\d.,]+)\s*([a-zA-Z%]+)?/);
+  if (singleMatch) {
+    let num = parseFloat(singleMatch[1].replace(',', '.'));
+    let unit = singleMatch[2] ? normalizeUnit(singleMatch[2]) : 'g';
+
+    // Normalize kg to g or l to ml if preferred, or keep as is. Grams / ml are most convenient for fine adjustments!
+    if (unit === 'kg') {
+      num = Math.round(num * 1000);
+      unit = 'g';
+    } else if (unit === 'l' || unit === 'liter' || unit === 'litre') {
+      num = Math.round(num * 1000);
+      unit = 'ml';
+    }
+
+    if (!isNaN(num) && num > 0) {
+      return {
+        quantity: num,
+        unit: unit,
+        raw: quantityStr
+      };
+    }
+  }
+
+  return { quantity: 1, unit: 'pcs', raw: quantityStr };
+}
+
+function normalizeUnit(u) {
+  const unit = u.toLowerCase().trim();
+  if (unit === 'g' || unit === 'gr' || unit === 'gram' || unit === 'gramm' || unit === 'grams') return 'g';
+  if (unit === 'kg' || unit === 'kilogram' || unit === 'kilo') return 'kg';
+  if (unit === 'ml' || unit === 'milliliter') return 'ml';
+  if (unit === 'l' || unit === 'liter' || unit === 'litre') return 'l';
+  if (unit === 'cl' || unit === 'centiliter') return 'ml';
+  if (unit === 'dl' || unit === 'deciliter') return 'ml';
+  if (unit === 'oz') return 'g';
+  if (unit === 'stk' || unit === 'stck' || unit === 'stueck' || unit === 'stück' || unit === 'pcs' || unit === 'pc' || unit === 'piece' || unit === 'pieces') return 'pcs';
+  if (unit === 'pkg' || unit === 'pack' || unit === 'packung' || unit === 'pkt') return 'pack';
+  if (unit === 'fl' || unit === 'flasche' || unit === 'bottle') return 'pcs';
+  if (unit === 'dose' || unit === 'can') return 'pcs';
+  return unit || 'g';
+}
+
+function inferCategory(categoriesTags = [], productName = '', categoriesStr = '') {
+  const combined = [
+    ...(Array.isArray(categoriesTags) ? categoriesTags : []),
+    productName,
+    categoriesStr
+  ].join(' ').toLowerCase();
+
+  if (/getränk|beverage|drink|saft|juice|cola|soda|wasser|water|bier|beer|wein|wine|milchshake|smoothie|tee|tea|energy|sirup/i.test(combined)) {
+    return 'Beverages';
+  }
+  if (/milch|käse|kaese|cheese|dairy|joghurt|yogurt|butter|quark|sahne|creme|schmand|mozzarella|parmesan|gouda|cheddar|feta|camembert|pudding/i.test(combined)) {
+    return 'Dairy & Cheese';
+  }
+  if (/fleisch|meat|wurst|sausage|schinken|ham|hähnchen|chicken|rind|beef|schwein|pork|bacon|salami|speck|fisch|fish|lachs|salmon|thunfisch|tuna|seafood|garnelen/i.test(combined)) {
+    return 'Meat & Fish';
+  }
+  if (/sauce|soße|senf|mustard|ketchup|mayo|mayonnaise|dressing|pesto|dip|essig|vinegar|öl|oil|gewürz|spice|curry|tabasco|remoulade/i.test(combined)) {
+    return 'Sauces & Condiments';
+  }
+  if (/gemüse|vegetable|obst|fruit|salat|salad|tomate|tomato|gurke|cucumber|apfel|apple|banane|banana|zwiebel|onion|karotte|carrot|kartoffel|potato|beeren|berry|zitrus|citrus|spinat|spinach/i.test(combined)) {
+    return 'Produce';
+  }
+  if (/brot|bread|toast|brötchen|bun|teig|dough|hefe|yeast|croissant|tortilla|wrap/i.test(combined)) {
+    return 'Bakery';
+  }
+  if (/snack|schokolade|chocolate|chips|keks|cookie|süß|sweet|candy|nuss|nut|eis|ice cream/i.test(combined)) {
+    return 'Snacks & Sweets';
+  }
+  if (/reste|leftover|fertiggericht|meal|pizza|suppen|soup|pasta|nudeln|noodle/i.test(combined)) {
+    return 'Prepared & Leftovers';
+  }
+
+  return 'General';
+}
+
+async function lookupBarcode(barcode) {
+  if (!barcode || typeof barcode !== 'string') return null;
+  const cleanBarcode = barcode.trim();
+  if (!cleanBarcode) return null;
+
+  try {
+    const url = `https://world.openfoodfacts.org/api/v2/product/${encodeURIComponent(cleanBarcode)}.json?fields=product_name,product_name_de,product_name_en,brands,quantity,categories_tags,categories,image_front_small_url,image_url,image_front_url`;
+    
+    const controller = new AbortController();
+    const timeout = setTimeout(() => controller.abort(), 6000); // 6s timeout
+
+    const res = await fetch(url, {
+      headers: {
+        'User-Agent': 'Fridger - Fridge Inventory Manager (https://gitea.eibl.tech/me0nline/Fridger)'
+      },
+      signal: controller.signal
+    });
+    clearTimeout(timeout);
+
+    if (!res.ok) {
+      return null;
+    }
+
+    const data = await res.json();
+    if (data.status !== 1 || !data.product) {
+      return null;
+    }
+
+    const p = data.product;
+    const name = p.product_name_de || p.product_name || p.product_name_en || '';
+    const brand = p.brands || '';
+    const parsedQty = parseQuantityString(p.quantity);
+    const category = inferCategory(p.categories_tags, name, p.categories);
+    const imageUrl = p.image_front_small_url || p.image_front_url || p.image_url || '';
+
+    return {
+      found: true,
+      barcode: cleanBarcode,
+      name: name.trim() || 'Unknown Product',
+      brand: brand.trim(),
+      quantity: parsedQty.quantity,
+      initial_quantity: parsedQty.quantity,
+      unit: parsedQty.unit,
+      category: category,
+      image_url: imageUrl,
+      raw_quantity: p.quantity || ''
+    };
+  } catch (err) {
+    console.warn(`Barcode lookup error for ${cleanBarcode}:`, err.message);
+    return null;
+  }
+}
+
+module.exports = {
+  lookupBarcode,
+  parseQuantityString,
+  inferCategory
+};
diff --git a/db.js b/db.js
new file mode 100644
index 0000000..b5ee9f9
--- /dev/null
+++ b/db.js
@@ -0,0 +1,353 @@
+const { DatabaseSync } = require('node:sqlite');
+const path = require('node:path');
+const fs = require('node:fs');
+
+const DATA_DIR = process.env.FRIDGER_DATA_DIR || path.join(__dirname, 'data');
+if (!fs.existsSync(DATA_DIR)) {
+  fs.mkdirSync(DATA_DIR, { recursive: true });
+}
+
+const DB_PATH = process.env.FRIDGER_DB_PATH || path.join(DATA_DIR, 'fridger.db');
+const db = new DatabaseSync(DB_PATH);
+
+// Initialize Tables
+db.exec(`
+  CREATE TABLE IF NOT EXISTS items (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    name TEXT NOT NULL,
+    barcode TEXT,
+    brand TEXT,
+    category TEXT DEFAULT 'General',
+    location TEXT DEFAULT 'Fridge - Middle Shelf',
+    quantity REAL NOT NULL,
+    initial_quantity REAL NOT NULL,
+    unit TEXT NOT NULL DEFAULT 'g',
+    expiry_date TEXT,
+    image_url TEXT,
+    notes TEXT,
+    is_opened INTEGER DEFAULT 0,
+    opened_at TEXT,
+    created_at TEXT DEFAULT (datetime('now', 'localtime')),
+    updated_at TEXT DEFAULT (datetime('now', 'localtime'))
+  );
+
+  CREATE TABLE IF NOT EXISTS activity_log (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    item_id INTEGER,
+    item_name TEXT,
+    action TEXT NOT NULL,
+    amount_change REAL,
+    unit TEXT,
+    timestamp TEXT DEFAULT (datetime('now', 'localtime')),
+    note TEXT
+  );
+
+  CREATE INDEX IF NOT EXISTS idx_items_barcode ON items(barcode);
+  CREATE INDEX IF NOT EXISTS idx_items_expiry ON items(expiry_date);
+  CREATE INDEX IF NOT EXISTS idx_items_category ON items(category);
+`);
+
+// Item functions
+function getAllItems({ search = '', category = '', location = '', status = 'all' } = {}) {
+  let query = `SELECT * FROM items WHERE 1=1`;
+  const params = [];
+
+  if (search) {
+    query += ` AND (name LIKE ? OR brand LIKE ? OR barcode LIKE ? OR notes LIKE ?)`;
+    const s = `%${search}%`;
+    params.push(s, s, s, s);
+  }
+
+  if (category && category !== 'All') {
+    query += ` AND category = ?`;
+    params.push(category);
+  }
+
+  if (location && location !== 'All') {
+    query += ` AND location = ?`;
+    params.push(location);
+  }
+
+  const today = new Date().toISOString().slice(0, 10);
+
+  if (status === 'expired') {
+    query += ` AND expiry_date IS NOT NULL AND expiry_date != '' AND expiry_date < ?`;
+    params.push(today);
+  } else if (status === 'expiring_soon') {
+    const next3Days = new Date(Date.now() + 3 * 24 * 60 * 60 * 1000).toISOString().slice(0, 10);
+    query += ` AND expiry_date IS NOT NULL AND expiry_date != '' AND expiry_date >= ? AND expiry_date <= ?`;
+    params.push(today, next3Days);
+  } else if (status === 'fresh') {
+    const next3Days = new Date(Date.now() + 3 * 24 * 60 * 60 * 1000).toISOString().slice(0, 10);
+    query += ` AND (expiry_date IS NULL OR expiry_date = '' OR expiry_date > ?)`;
+    params.push(next3Days);
+  } else if (status === 'low') {
+    query += ` AND (quantity <= (initial_quantity * 0.25) OR quantity = 0)`;
+  }
+
+  query += ` ORDER BY 
+    CASE 
+      WHEN expiry_date IS NULL OR expiry_date = '' THEN 1 
+      ELSE 0 
+    END, 
+    expiry_date ASC, 
+    updated_at DESC`;
+
+  const stmt = db.prepare(query);
+  return stmt.all(...params);
+}
+
+function getItemById(id) {
+  const stmt = db.prepare(`SELECT * FROM items WHERE id = ?`);
+  return stmt.get(id);
+}
+
+function getItemByBarcode(barcode) {
+  const stmt = db.prepare(`SELECT * FROM items WHERE barcode = ? ORDER BY updated_at DESC LIMIT 1`);
+  return stmt.get(barcode);
+}
+
+function createItem(item) {
+  const initial_qty = Number(item.initial_quantity) || Number(item.quantity) || 1;
+  const current_qty = Number(item.quantity) ?? initial_qty;
+  const unit = (item.unit || 'g').trim();
+  const is_opened = item.is_opened ? 1 : 0;
+  const opened_at = is_opened ? (item.opened_at || new Date().toISOString().slice(0, 10)) : null;
+
+  const stmt = db.prepare(`
+    INSERT INTO items (
+      name, barcode, brand, category, location, 
+      quantity, initial_quantity, unit, expiry_date, 
+      image_url, notes, is_opened, opened_at
+    ) VALUES (
+      ?, ?, ?, ?, ?, 
+      ?, ?, ?, ?, 
+      ?, ?, ?, ?
+    )
+  `);
+
+  const result = stmt.run(
+    item.name,
+    item.barcode || null,
+    item.brand || null,
+    item.category || 'General',
+    item.location || 'Fridge - Middle Shelf',
+    current_qty,
+    initial_qty,
+    unit,
+    item.expiry_date || null,
+    item.image_url || null,
+    item.notes || null,
+    is_opened,
+    opened_at
+  );
+
+  const newId = result.lastInsertRowid;
+
+  // Log activity
+  logActivity({
+    item_id: newId,
+    item_name: item.name,
+    action: 'add',
+    amount_change: current_qty,
+    unit: unit,
+    note: `Added ${current_qty} ${unit}`
+  });
+
+  return getItemById(newId);
+}
+
+function updateItem(id, item) {
+  const existing = getItemById(id);
+  if (!existing) return null;
+
+  const qty = item.quantity !== undefined ? Number(item.quantity) : existing.quantity;
+  const init_qty = item.initial_quantity !== undefined ? Number(item.initial_quantity) : existing.initial_quantity;
+  const is_opened = item.is_opened !== undefined ? (item.is_opened ? 1 : 0) : existing.is_opened;
+  let opened_at = existing.opened_at;
+  if (is_opened && !existing.is_opened) {
+    opened_at = new Date().toISOString().slice(0, 10);
+  } else if (!is_opened) {
+    opened_at = null;
+  }
+
+  const stmt = db.prepare(`
+    UPDATE items SET
+      name = ?,
+      barcode = ?,
+      brand = ?,
+      category = ?,
+      location = ?,
+      quantity = ?,
+      initial_quantity = ?,
+      unit = ?,
+      expiry_date = ?,
+      image_url = ?,
+      notes = ?,
+      is_opened = ?,
+      opened_at = ?,
+      updated_at = datetime('now', 'localtime')
+    WHERE id = ?
+  `);
+
+  stmt.run(
+    item.name ?? existing.name,
+    item.barcode !== undefined ? item.barcode : existing.barcode,
+    item.brand !== undefined ? item.brand : existing.brand,
+    item.category ?? existing.category,
+    item.location ?? existing.location,
+    qty,
+    init_qty,
+    item.unit ?? existing.unit,
+    item.expiry_date !== undefined ? item.expiry_date : existing.expiry_date,
+    item.image_url !== undefined ? item.image_url : existing.image_url,
+    item.notes !== undefined ? item.notes : existing.notes,
+    is_opened,
+    opened_at,
+    id
+  );
+
+  if (qty !== existing.quantity) {
+    const diff = qty - existing.quantity;
+    logActivity({
+      item_id: id,
+      item_name: item.name || existing.name,
+      action: diff < 0 ? 'consume_part' : 'restock',
+      amount_change: diff,
+      unit: item.unit || existing.unit,
+      note: `Adjusted quantity from ${existing.quantity} to ${qty} ${item.unit || existing.unit}`
+    });
+  }
+
+  return getItemById(id);
+}
+
+function adjustQuantity(id, { newQuantity, delta, markOpened }) {
+  const item = getItemById(id);
+  if (!item) return null;
+
+  let targetQty = item.quantity;
+  if (newQuantity !== undefined) {
+    targetQty = Number(newQuantity);
+  } else if (delta !== undefined) {
+    targetQty = item.quantity + Number(delta);
+  }
+
+  // Prevent negative quantity
+  if (targetQty < 0) targetQty = 0;
+
+  const is_opened = markOpened !== undefined ? (markOpened ? 1 : 0) : (item.is_opened || (targetQty < item.initial_quantity ? 1 : 0));
+  const opened_at = is_opened && !item.opened_at ? new Date().toISOString().slice(0, 10) : item.opened_at;
+
+  const diff = targetQty - item.quantity;
+
+  const stmt = db.prepare(`
+    UPDATE items SET
+      quantity = ?,
+      is_opened = ?,
+      opened_at = ?,
+      updated_at = datetime('now', 'localtime')
+    WHERE id = ?
+  `);
+
+  stmt.run(targetQty, is_opened, opened_at, id);
+
+  logActivity({
+    item_id: id,
+    item_name: item.name,
+    action: targetQty === 0 ? 'consume_all' : (diff < 0 ? 'consume_part' : 'restock'),
+    amount_change: diff,
+    unit: item.unit,
+    note: targetQty === 0 
+      ? `Consumed all (${item.quantity} ${item.unit})` 
+      : `${diff < 0 ? 'Consumed' : 'Added'} ${Math.abs(diff)} ${item.unit} (remaining: ${targetQty} ${item.unit})`
+  });
+
+  return getItemById(id);
+}
+
+function deleteItem(id) {
+  const item = getItemById(id);
+  if (!item) return false;
+
+  logActivity({
+    item_id: id,
+    item_name: item.name,
+    action: 'delete',
+    amount_change: -item.quantity,
+    unit: item.unit,
+    note: `Deleted item from fridge`
+  });
+
+  const stmt = db.prepare(`DELETE FROM items WHERE id = ?`);
+  stmt.run(id);
+  return true;
+}
+
+function logActivity({ item_id, item_name, action, amount_change, unit, note }) {
+  try {
+    const stmt = db.prepare(`
+      INSERT INTO activity_log (item_id, item_name, action, amount_change, unit, note)
+      VALUES (?, ?, ?, ?, ?, ?)
+    `);
+    stmt.run(item_id || null, item_name || null, action, amount_change || 0, unit || '', note || '');
+  } catch (err) {
+    console.error('Error logging activity:', err);
+  }
+}
+
+function getActivityLogs(limit = 50) {
+  const stmt = db.prepare(`SELECT * FROM activity_log ORDER BY timestamp DESC, id DESC LIMIT ?`);
+  return stmt.all(limit);
+}
+
+function getStats() {
+  const today = new Date().toISOString().slice(0, 10);
+  const next3Days = new Date(Date.now() + 3 * 24 * 60 * 60 * 1000).toISOString().slice(0, 10);
+
+  const totalStmt = db.prepare(`SELECT COUNT(*) as count FROM items`);
+  const total = totalStmt.get().count;
+
+  const expiredStmt = db.prepare(`
+    SELECT COUNT(*) as count FROM items 
+    WHERE expiry_date IS NOT NULL AND expiry_date != '' AND expiry_date < ?
+  `);
+  const expired = expiredStmt.get(today).count;
+
+  const expiringSoonStmt = db.prepare(`
+    SELECT COUNT(*) as count FROM items 
+    WHERE expiry_date IS NOT NULL AND expiry_date != '' AND expiry_date >= ? AND expiry_date <= ?
+  `);
+  const expiringSoon = expiringSoonStmt.get(today, next3Days).count;
+
+  const openedStmt = db.prepare(`SELECT COUNT(*) as count FROM items WHERE is_opened = 1`);
+  const opened = openedStmt.get().count;
+
+  const lowStmt = db.prepare(`
+    SELECT COUNT(*) as count FROM items 
+    WHERE quantity <= (initial_quantity * 0.25) AND quantity > 0
+  `);
+  const low = lowStmt.get().count;
+
+  return {
+    total,
+    expired,
+    expiringSoon,
+    opened,
+    low,
+    fresh: total - expired - expiringSoon
+  };
+}
+
+module.exports = {
+  db,
+  getAllItems,
+  getItemById,
+  getItemByBarcode,
+  createItem,
+  updateItem,
+  adjustQuantity,
+  deleteItem,
+  getActivityLogs,
+  getStats
+};
diff --git a/package-lock.json b/package-lock.json
new file mode 100644
index 0000000..e8eec41
--- /dev/null
+++ b/package-lock.json
@@ -0,0 +1,860 @@
+{
+  "name": "fridger",
+  "version": "1.0.0",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "fridger",
+      "version": "1.0.0",
+      "license": "MIT",
+      "dependencies": {
+        "cors": "^2.8.5",
+        "express": "^4.21.2"
+      }
+    },
+    "node_modules/accepts": {
+      "version": "1.3.8",
+      "resolved": "https://registry.npmjs.org/accepts/-/accepts-1.3.8.tgz",
+      "integrity": "sha512-PYAthTa2m2VKxuvSD3DPC/Gy+U+sOA1LAuT8mkmRuvw+NACSaeXEQ+NHcVF7rONl6qcaxV3Uuemwawk+7+SJLw==",
+      "license": "MIT",
+      "dependencies": {
+        "mime-types": "~2.1.34",
+        "negotiator": "0.6.3"
+      },
+      "engines": {
+        "node": ">= 0.6"
+      }
+    },
+    "node_modules/array-flatten": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/array-flatten/-/array-flatten-1.1.1.tgz",
+      "integrity": "sha512-PCVAQswWemu6UdxsDFFX/+gVeYqKAod3D3UVm91jHwynguOwAvYPhx8nNlM++NqRcK6CxxpUafjmhIdKiHibqg==",
+      "license": "MIT"
+    },
+    "node_modules/body-parser": {
+      "version": "1.20.8",
+      "resolved": "https://registry.npmjs.org/body-parser/-/body-parser-1.20.8.tgz",
+      "integrity": "sha512-JNcyFQ64OiijEkPzUBTCe+hyPXUD/3LEldGQ6iF5LR1w00mx9o7xtDWHXBY2iItjdCFGoilOLNQbH943ut7pHA==",
+      "license": "MIT",
+      "dependencies": {
+        "bytes": "~3.1.2",
+        "content-type": "~1.0.5",
+        "debug": "2.6.9",
+        "depd": "2.0.0",
+        "destroy": "~1.2.0",
+        "http-errors": "~2.0.1",
+        "iconv-lite": "~0.4.24",
+        "on-finished": "~2.4.1",
+        "qs": "~6.16.0",
+        "raw-body": "~2.5.3",
+        "type-is": "~1.6.18",
+        "unpipe": "~1.0.0"
+      },
+      "engines": {
+        "node": ">= 0.8",
+        "npm": "1.2.8000 || >= 1.4.16"
+      }
+    },
+    "node_modules/bytes": {
+      "version": "3.1.2",
+      "resolved": "https://registry.npmjs.org/bytes/-/bytes-3.1.2.tgz",
+      "integrity": "sha512-/Nf7TyzTx6S3yRJObOAV7956r8cr2+Oj8AC5dt8wSP3BQAoeX58NoHyCU8P8zGkNXStjTSi6fzO6F0pBdcYbEg==",
+      "license": "MIT",
+      "engines": {
+        "node": ">= 0.8"
+      }
+    },
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diff --git a/package.json b/package.json
new file mode 100644
index 0000000..a6a1f07
--- /dev/null
+++ b/package.json
@@ -0,0 +1,23 @@
+{
+  "name": "fridger",
+  "version": "1.0.0",
+  "description": "Smart Fridge Inventory & Management Web App with Barcode Scanner and Weight Tracking",
+  "main": "server.js",
+  "scripts": {
+    "start": "node server.js",
+    "dev": "node --watch server.js"
+  },
+  "dependencies": {
+    "cors": "^2.8.5",
+    "express": "^4.21.2"
+  },
+  "keywords": [
+    "fridge",
+    "inventory",
+    "barcode",
+    "openfoodfacts",
+    "docker"
+  ],
+  "author": "me0nline",
+  "license": "MIT"
+}
diff --git a/server.js b/server.js
new file mode 100644
index 0000000..f618ff0
--- /dev/null
+++ b/server.js
@@ -0,0 +1,376 @@
+const express = require('express');
+const cors = require('cors');
+const path = require('node:path');
+const db = require('./db');
+const { lookupBarcode } = require('./barcode');
+
+const app = express();
+const PORT = process.env.PORT || 3000;
+
+app.use(cors());
+app.use(express.json());
+app.use(express.static(path.join(__dirname, 'public')));
+
+// Metadata definitions
+const CATEGORIES = [
+  { id: 'Dairy & Cheese', name: 'Dairy & Cheese', icon: 'milk', color: '#3b82f6' },
+  { id: 'Meat & Fish', name: 'Meat & Fish', icon: 'beef', color: '#ef4444' },
+  { id: 'Produce', name: 'Fruits & Veggies', icon: 'apple', color: '#10b981' },
+  { id: 'Beverages', name: 'Drinks & Beverages', icon: 'cup-soda', color: '#06b6d4' },
+  { id: 'Sauces & Condiments', name: 'Sauces & Condiments', icon: 'flask-conical', color: '#f59e0b' },
+  { id: 'Bakery', name: 'Bakery & Bread', icon: 'croissant', color: '#d97706' },
+  { id: 'Prepared & Leftovers', name: 'Leftovers & Meals', icon: 'utensils', color: '#8b5cf6' },
+  { id: 'Snacks & Sweets', name: 'Snacks & Sweets', icon: 'cookie', color: '#ec4899' },
+  { id: 'General', name: 'General / Other', icon: 'package', color: '#6b7280' }
+];
+
+const LOCATIONS = [
+  'Fridge - Top Shelf',
+  'Fridge - Middle Shelf',
+  'Fridge - Bottom Shelf',
+  'Fridge - Crisper Drawer',
+  'Fridge - Door Rack',
+  'Freezer - Top Drawer',
+  'Freezer - Bottom Drawer',
+  'Pantry / Cupboard'
+];
+
+const UNITS = [
+  { id: 'g', label: 'Grams (g)', isWeight: true, step: 50 },
+  { id: 'kg', label: 'Kilograms (kg)', isWeight: true, step: 0.1 },
+  { id: 'ml', label: 'Milliliters (ml)', isVolume: true, step: 100 },
+  { id: 'l', label: 'Liters (L)', isVolume: true, step: 0.5 },
+  { id: 'pcs', label: 'Pieces (Stk / pcs)', isCount: true, step: 1 },
+  { id: 'slices', label: 'Slices', isCount: true, step: 1 },
+  { id: 'pack', label: 'Pack / Package', isCount: true, step: 1 }
+];
+
+// Health Check
+app.get('/health', (req, res) => {
+  res.json({ status: 'ok', uptime: process.uptime(), timestamp: new Date().toISOString() });
+});
+
+// Meta endpoint
+app.get('/api/meta', (req, res) => {
+  res.json({
+    categories: CATEGORIES,
+    locations: LOCATIONS,
+    units: UNITS
+  });
+});
+
+// Stats endpoint
+app.get('/api/stats', (req, res) => {
+  try {
+    const stats = db.getStats();
+    res.json(stats);
+  } catch (err) {
+    res.status(500).json({ error: err.message });
+  }
+});
+
+// Activity logs
+app.get('/api/activity', (req, res) => {
+  try {
+    const limit = parseInt(req.query.limit, 10) || 50;
+    const logs = db.getActivityLogs(limit);
+    res.json(logs);
+  } catch (err) {
+    res.status(500).json({ error: err.message });
+  }
+});
+
+// Barcode lookup
+app.get('/api/barcode/:code', async (req, res) => {
+  const barcode = req.params.code;
+  if (!barcode) {
+    return res.status(400).json({ error: 'Barcode parameter is required' });
+  }
+
+  // First check if user previously stored an item with this barcode
+  const existing = db.getItemByBarcode(barcode);
+  if (existing) {
+    return res.json({
+      found: true,
+      fromLocal: true,
+      barcode: existing.barcode,
+      name: existing.name,
+      brand: existing.brand || '',
+      category: existing.category || 'General',
+      location: existing.location || 'Fridge - Middle Shelf',
+      quantity: existing.initial_quantity || existing.quantity,
+      initial_quantity: existing.initial_quantity || existing.quantity,
+      unit: existing.unit || 'g',
+      image_url: existing.image_url || ''
+    });
+  }
+
+  // Lookup in Open Food Facts
+  const product = await lookupBarcode(barcode);
+  if (product) {
+    return res.json({
+      ...product,
+      fromLocal: false
+    });
+  }
+
+  res.status(404).json({
+    found: false,
+    barcode: barcode,
+    message: 'Barcode not found in database or Open Food Facts'
+  });
+});
+
+// List items
+app.get('/api/items', (req, res) => {
+  try {
+    const { search, category, location, status } = req.query;
+    const items = db.getAllItems({ search, category, location, status });
+    res.json(items);
+  } catch (err) {
+    res.status(500).json({ error: err.message });
+  }
+});
+
+// Get single item
+app.get('/api/items/:id', (req, res) => {
+  try {
+    const item = db.getItemById(req.params.id);
+    if (!item) return res.status(404).json({ error: 'Item not found' });
+    res.json(item);
+  } catch (err) {
+    res.status(500).json({ error: err.message });
+  }
+});
+
+// Create item
+app.post('/api/items', (req, res) => {
+  try {
+    const { name, quantity } = req.body;
+    if (!name || name.trim() === '') {
+      return res.status(400).json({ error: 'Item name is required' });
+    }
+    if (quantity === undefined || isNaN(Number(quantity)) || Number(quantity) < 0) {
+      return res.status(400).json({ error: 'Valid quantity is required' });
+    }
+
+    const item = db.createItem(req.body);
+    res.status(201).json(item);
+  } catch (err) {
+    res.status(500).json({ error: err.message });
+  }
+});
+
+// Update item
+app.put('/api/items/:id', (req, res) => {
+  try {
+    const item = db.updateItem(req.params.id, req.body);
+    if (!item) return res.status(404).json({ error: 'Item not found' });
+    res.json(item);
+  } catch (err) {
+    res.status(500).json({ error: err.message });
+  }
+});
+
+// Quick adjust quantity (grams / count / delta / slider)
+app.patch('/api/items/:id/quantity', (req, res) => {
+  try {
+    const { newQuantity, delta, markOpened } = req.body;
+    if (newQuantity === undefined && delta === undefined) {
+      return res.status(400).json({ error: 'Either newQuantity or delta must be provided' });
+    }
+
+    const item = db.adjustQuantity(req.params.id, { newQuantity, delta, markOpened });
+    if (!item) return res.status(404).json({ error: 'Item not found' });
+    res.json(item);
+  } catch (err) {
+    res.status(500).json({ error: err.message });
+  }
+});
+
+// Delete item
+app.delete('/api/items/:id', (req, res) => {
+  try {
+    const success = db.deleteItem(req.params.id);
+    if (!success) return res.status(404).json({ error: 'Item not found' });
+    res.json({ success: true, message: 'Item removed' });
+  } catch (err) {
+    res.status(500).json({ error: err.message });
+  }
+});
+
+// Seed sample fridge data if empty
+app.post('/api/seed', (req, res) => {
+  try {
+    const existing = db.getAllItems();
+    if (existing.length > 0 && !req.query.force) {
+      return res.json({ message: 'Fridge already contains items', count: existing.length });
+    }
+
+    const today = new Date();
+    const addDays = (d) => {
+      const target = new Date(today.getTime() + d * 24 * 60 * 60 * 1000);
+      return target.toISOString().slice(0, 10);
+    };
+
+    const samples = [
+      {
+        name: 'Gouda Cheese (Jung)',
+        brand: 'Milbona',
+        barcode: '4056489123456',
+        category: 'Dairy & Cheese',
+        location: 'Fridge - Middle Shelf',
+        quantity: 200,
+        initial_quantity: 400,
+        unit: 'g',
+        is_opened: 1,
+        opened_at: addDays(-2),
+        expiry_date: addDays(6),
+        notes: 'Opened, about half remaining for sandwiches'
+      },
+      {
+        name: 'Whole Milk 3.5%',
+        brand: 'Weihenstephan',
+        barcode: '4008452023451',
+        category: 'Dairy & Cheese',
+        location: 'Fridge - Door Rack',
+        quantity: 650,
+        initial_quantity: 1000,
+        unit: 'ml',
+        is_opened: 1,
+        opened_at: addDays(-1),
+        expiry_date: addDays(3),
+        notes: 'Carton opened yesterday'
+      },
+      {
+        name: 'Organic Greek Yogurt',
+        brand: 'Andechser Natur',
+        barcode: '4005040001234',
+        category: 'Dairy & Cheese',
+        location: 'Fridge - Top Shelf',
+        quantity: 500,
+        initial_quantity: 500,
+        unit: 'g',
+        is_opened: 0,
+        expiry_date: addDays(12),
+        notes: 'Unopened 500g cup'
+      },
+      {
+        name: 'Chicken Breast Fillet',
+        brand: 'Bauerngut',
+        barcode: '4012345678901',
+        category: 'Meat & Fish',
+        location: 'Fridge - Bottom Shelf',
+        quantity: 350,
+        initial_quantity: 400,
+        unit: 'g',
+        is_opened: 1,
+        opened_at: addDays(0),
+        expiry_date: addDays(1),
+        notes: 'Cook today or freeze!'
+      },
+      {
+        name: 'Fresh Cherry Tomatoes',
+        brand: 'Bio',
+        category: 'Produce',
+        location: 'Fridge - Crisper Drawer',
+        quantity: 180,
+        initial_quantity: 250,
+        unit: 'g',
+        is_opened: 1,
+        expiry_date: addDays(4),
+        notes: 'Sweet snack tomatoes'
+      },
+      {
+        name: 'Dijon Mustard',
+        brand: 'Maille',
+        barcode: '3036810200028',
+        category: 'Sauces & Condiments',
+        location: 'Fridge - Door Rack',
+        quantity: 140,
+        initial_quantity: 215,
+        unit: 'g',
+        is_opened: 1,
+        expiry_date: addDays(90),
+        notes: 'In door rack'
+      },
+      {
+        name: 'Butter (Irish Pure)',
+        brand: 'Kerrygold',
+        barcode: '5011010001018',
+        category: 'Dairy & Cheese',
+        location: 'Fridge - Door Rack',
+        quantity: 190,
+        initial_quantity: 250,
+        unit: 'g',
+        is_opened: 1,
+        expiry_date: addDays(25),
+        notes: 'In butter dish'
+      },
+      {
+        name: 'Homemade Pasta Bolognese',
+        brand: '',
+        category: 'Prepared & Leftovers',
+        location: 'Fridge - Top Shelf',
+        quantity: 1,
+        initial_quantity: 1,
+        unit: 'pack',
+        is_opened: 1,
+        opened_at: addDays(-1),
+        expiry_date: addDays(1),
+        notes: 'Glass container, 1 portion'
+      },
+      {
+        name: 'Orange Juice 100%',
+        brand: 'Innocent',
+        barcode: '5038862112345',
+        category: 'Beverages',
+        location: 'Fridge - Door Rack',
+        quantity: 900,
+        initial_quantity: 900,
+        unit: 'ml',
+        is_opened: 0,
+        expiry_date: addDays(14)
+      }
+    ];
+
+    for (const sample of samples) {
+      db.createItem(sample);
+    }
+
+    res.json({ message: 'Seed complete', created: samples.length });
+  } catch (err) {
+    res.status(500).json({ error: err.message });
+  }
+});
+
+// Catch-all route to serve the Single Page Application
+app.get('*', (req, res) => {
+  res.sendFile(path.join(__dirname, 'public', 'index.html'));
+});
+
+// Start Server
+if (require.main === module) {
+  // Check if initial seed is needed on first launch
+  const items = db.getAllItems();
+  if (items.length === 0) {
+    console.log('Fridge is empty. Pre-seeding sample items for initial experience...');
+    // Seed initial items
+    const today = new Date();
+    const addDays = (d) => new Date(today.getTime() + d * 24 * 60 * 60 * 1000).toISOString().slice(0, 10);
+    [
+      { name: 'Gouda Cheese', brand: 'Milbona', barcode: '4056489123456', category: 'Dairy & Cheese', location: 'Fridge - Middle Shelf', quantity: 200, initial_quantity: 400, unit: 'g', is_opened: 1, expiry_date: addDays(5), notes: 'Half pack left' },
+      { name: 'Fresh Milk 3.5%', brand: 'Weihenstephan', barcode: '4008452023451', category: 'Dairy & Cheese', location: 'Fridge - Door Rack', quantity: 700, initial_quantity: 1000, unit: 'ml', is_opened: 1, expiry_date: addDays(3), notes: 'Opened' },
+      { name: 'Butter', brand: 'Kerrygold', barcode: '5011010001018', category: 'Dairy & Cheese', location: 'Fridge - Door Rack', quantity: 210, initial_quantity: 250, unit: 'g', is_opened: 1, expiry_date: addDays(20) },
+      { name: 'Chicken Breast', brand: 'Bio', category: 'Meat & Fish', location: 'Fridge - Bottom Shelf', quantity: 400, initial_quantity: 400, unit: 'g', is_opened: 0, expiry_date: addDays(2), notes: 'Cook soon' },
+      { name: 'Cherry Tomatoes', category: 'Produce', location: 'Fridge - Crisper Drawer', quantity: 180, initial_quantity: 250, unit: 'g', is_opened: 1, expiry_date: addDays(4) },
+      { name: 'Dijon Mustard', brand: 'Maille', barcode: '3036810200028', category: 'Sauces & Condiments', location: 'Fridge - Door Rack', quantity: 150, initial_quantity: 215, unit: 'g', is_opened: 1, expiry_date: addDays(60) }
+    ].forEach(item => db.createItem(item));
+  }
+
+  app.listen(PORT, '0.0.0.0', () => {
+    console.log(`🧊 Fridger server running at http://0.0.0.0:${PORT}`);
+  });
+}
+
+module.exports = app;
diff --git a/test.js b/test.js
new file mode 100644
index 0000000..6f034ff
--- /dev/null
+++ b/test.js
@@ -0,0 +1,77 @@
+const assert = require('node:assert');
+const db = require('./db');
+const { parseQuantityString, inferCategory } = require('./barcode');
+
+console.log('🧪 Running Fridger Backend Unit Tests...');
+
+// 1. Test quantity parsing
+console.log('1. Testing quantity parsing...');
+assert.strictEqual(parseQuantityString('250 g').quantity, 250);
+assert.strictEqual(parseQuantityString('250 g').unit, 'g');
+assert.strictEqual(parseQuantityString('1.5 kg').quantity, 1500);
+assert.strictEqual(parseQuantityString('1.5 kg').unit, 'g');
+assert.strictEqual(parseQuantityString('500ml').quantity, 500);
+assert.strictEqual(parseQuantityString('500ml').unit, 'ml');
+assert.strictEqual(parseQuantityString('6 x 100g').quantity, 600);
+assert.strictEqual(parseQuantityString('4 Stk').quantity, 4);
+assert.strictEqual(parseQuantityString('4 Stk').unit, 'pcs');
+console.log('✓ Quantity parsing tests passed!');
+
+// 2. Test category inference
+console.log('2. Testing category inference...');
+assert.strictEqual(inferCategory([], 'Frische Vollmilch 3.5%'), 'Dairy & Cheese');
+assert.strictEqual(inferCategory([], 'Gouda Käse in Scheiben'), 'Dairy & Cheese');
+assert.strictEqual(inferCategory([], 'Rinderhackfleisch'), 'Meat & Fish');
+assert.strictEqual(inferCategory([], 'Bio Tomaten'), 'Produce');
+assert.strictEqual(inferCategory([], 'Apfelsaft 100%'), 'Beverages');
+assert.strictEqual(inferCategory([], 'Senf mittelscharf'), 'Sauces & Condiments');
+console.log('✓ Category inference tests passed!');
+
+// 3. Test Database CRUD & Quantity adjustments
+console.log('3. Testing Database operations...');
+const newItem = db.createItem({
+  name: 'Test Yogurt',
+  brand: 'TestBrand',
+  barcode: '999999999999',
+  category: 'Dairy & Cheese',
+  location: 'Fridge - Top Shelf',
+  quantity: 500,
+  initial_quantity: 500,
+  unit: 'g',
+  expiry_date: '2026-10-20',
+  notes: 'Test note'
+});
+
+assert(newItem.id, 'Item should have an ID');
+assert.strictEqual(newItem.name, 'Test Yogurt');
+assert.strictEqual(newItem.quantity, 500);
+assert.strictEqual(newItem.unit, 'g');
+
+// Adjust grams: e.g. consumed 150g -> remaining 350g
+console.log('Testing partial consumption (-150g)...');
+const adjusted = db.adjustQuantity(newItem.id, { delta: -150 });
+assert.strictEqual(adjusted.quantity, 350);
+assert.strictEqual(adjusted.is_opened, 1, 'Should automatically mark as opened when grams reduced');
+
+// Slider or direct set: e.g. set remaining to 100g
+console.log('Testing absolute set (100g remaining)...');
+const updatedAbs = db.adjustQuantity(newItem.id, { newQuantity: 100 });
+assert.strictEqual(updatedAbs.quantity, 100);
+
+// Consume remaining
+console.log('Testing consume all...');
+const finished = db.adjustQuantity(newItem.id, { newQuantity: 0 });
+assert.strictEqual(finished.quantity, 0);
+
+// Delete test item
+const deleted = db.deleteItem(newItem.id);
+assert.strictEqual(deleted, true);
+assert.strictEqual(db.getItemById(newItem.id), undefined);
+
+// Test stats
+const stats = db.getStats();
+assert(typeof stats.total === 'number');
+assert(typeof stats.fresh === 'number');
+
+console.log('✓ All database operations passed!');
+console.log('🎉 All backend tests completed successfully!');