diff --git a/data/output/diagram.png b/data/output/diagram.png
new file mode 100644
index 0000000..27959a1
Binary files /dev/null and b/data/output/diagram.png differ
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..39e5bd8
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1 @@
+pyaml
\ No newline at end of file
diff --git a/src/netdiag/base.py b/src/netdiag/base.py
index 1def400..999c201 100644
--- a/src/netdiag/base.py
+++ b/src/netdiag/base.py
@@ -3,11 +3,10 @@ from .domain.models import Topology
 from .parse.convert_raw import (
     convert_raw_topology,
 )
+from .output.graphviz import generate_diagram
+from .output.file_convert import make_yaml
 import logging
 
-# from .make_res import make_result
-# from .structures import Result
-
 logging.basicConfig(
     level=logging.INFO, format="%(asctime)s - %(levelname)s - %(message)s"
 )
@@ -17,13 +16,10 @@ def run():
     raw_devices = parse_csv("data/input/table.csv")
     # print(raw_devices)
     topology = convert_raw_topology(raw_devices)
-    print(topology)
+    # print(topology)
 
-    # 2) make structured result
-    # result = make_result(devices_raw, network_agg, network_interfaces)
-
-    # # 3) output (for debug)
-    # print(result)
+    generate_diagram(topology, "data/output/diagram.png")
+    make_yaml(topology, "data/output/topology.yaml")
 
 
 if __name__ == "__main__":
diff --git a/src/netdiag/output/__init__.py b/src/netdiag/output/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/src/netdiag/output/file_convert.py b/src/netdiag/output/file_convert.py
new file mode 100644
index 0000000..9e444d3
--- /dev/null
+++ b/src/netdiag/output/file_convert.py
@@ -0,0 +1,30 @@
+import yaml
+
+from ..domain.models import Topology
+
+"""
+Example:
+links:
+networks:
+    - A: [PC1.eth0, PC2.eth0]
+meta:
+  id: host-host.csv
+  name: host-host.csv
+nodes:
+- role: host
+  name: PC1
+  interfaces:
+  - eth0:
+      - ip: 10.0.12.1/24
+        network: A
+- role: host
+  name: PC2
+  interfaces:
+    - eth0:
+      - ip: 10.0.12.2/24
+        network: A
+"""
+
+
+def make_yaml(topology: Topology, output_path: str) -> None:
+    pass
diff --git a/src/netdiag/output/graphviz.py b/src/netdiag/output/graphviz.py
new file mode 100644
index 0000000..67c159b
--- /dev/null
+++ b/src/netdiag/output/graphviz.py
@@ -0,0 +1,26 @@
+from ..domain.models import Topology
+import graphviz
+
+
+def generate_diagram(topology: Topology, output_path: str) -> None:
+    dot = graphviz.Graph(name="Network Topology", format="png", engine="neato")
+    dot.attr(overlap="false", splines="true")
+
+    for device in topology.devices.values():
+        shape = "box"
+        dot.node(device.name, label=device.name, shape=shape)
+
+    for network in topology.networks.values():
+        interfaces_with_device = [
+            iface for iface in network.interfaces if iface.device is not None
+        ]
+
+        for i, iface_a in enumerate(interfaces_with_device):
+            for iface_b in interfaces_with_device[i + 1 :]:
+                label = network.name or ""
+                dot.edge(iface_a.device.name, iface_b.device.name, label=label)
+
+    output_path = output_path[:-4] if output_path.endswith(".png") else output_path
+    dot.render(output_path, cleanup=True)
+
+    return
diff --git a/src/netdiag/parse/convert_raw.py b/src/netdiag/parse/convert_raw.py
index 1c37d48..08b3dbe 100644
--- a/src/netdiag/parse/convert_raw.py
+++ b/src/netdiag/parse/convert_raw.py
@@ -10,6 +10,7 @@ from ..domain.models import (
 )
 
 from . import RawDevices
+import logging
 
 name_matching = {
     "DEVICE_TYPE": "Role",
@@ -136,12 +137,15 @@ def assign_interfaces_to_networks(
 def convert_raw_topology(raw_devices: list[RawDevices]) -> Topology:
     topology = Topology()
 
+    logging.info(f"Parsing {len(raw_devices)} raw devices to devices")
     devices = parse_devices(raw_devices)
+    logging.info(f"Parsing interfaces from raw devices")
     add_interfaces(devices, raw_devices)
 
     for device in devices:
         topology.add_device(device)
 
+    logging.info(f"Parsing networks from raw devices")
     networks = parse_networks(devices, raw_devices)
     assign_interfaces_to_networks(networks, devices)