diff --git a/.github/workflows/mypy.yml b/.github/workflows/mypy.yml
new file mode 100644
index 0000000..cb815b8
--- /dev/null
+++ b/.github/workflows/mypy.yml
@@ -0,0 +1,22 @@
+name: mypy paste.py 🐍
+
+on:
+  pull_request:
+    branches: [main]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v3
+      - name: Setup PDM
+        uses: pdm-project/setup-pdm@v3
+        with:
+          python-version: 3.11
+          cache: true
+          cache-dependency-path: "**/pdm.lock"
+      - name: Install dependencies
+        run: pdm install
+      - name: Run mypy
+        run: pdm mypy
diff --git a/mypy.ini b/mypy.ini
new file mode 100644
index 0000000..132834a
--- /dev/null
+++ b/mypy.ini
@@ -0,0 +1,3 @@
+[mypy]
+ignore_missing_imports = True
+disallow_untyped_defs = True
\ No newline at end of file
diff --git a/pdm.lock b/pdm.lock
index 3d45646..8aba24c 100644
--- a/pdm.lock
+++ b/pdm.lock
@@ -2,10 +2,10 @@
 # It is not intended for manual editing.
 
 [metadata]
-groups = ["default", "test", "lint", "hooks"]
+groups = ["default", "test", "lint", "hooks", "typing"]
 strategy = ["cross_platform"]
 lock_version = "4.4.1"
-content_hash = "sha256:5f062d1449fafa2f6f1dc4d1d0d89c5453c819e95ac94aa028d11ebd2b7b1162"
+content_hash = "sha256:c3c10a4cfdf9111aab6e44a030c9b1cb88c074d8b15e0dd2336ff6f1dfdb579e"
 
 [[package]]
 name = "annotated-types"
@@ -487,6 +487,36 @@ files = [
     {file = "MarkupSafe-2.1.3.tar.gz", hash = "sha256:af598ed32d6ae86f1b747b82783958b1a4ab8f617b06fe68795c7f026abbdcad"},
 ]
 
+[[package]]
+name = "mypy"
+version = "1.8.0"
+requires_python = ">=3.8"
+summary = "Optional static typing for Python"
+dependencies = [
+    "mypy-extensions>=1.0.0",
+    "tomli>=1.1.0; python_version < \"3.11\"",
+    "typing-extensions>=4.1.0",
+]
+files = [
+    {file = "mypy-1.8.0-cp310-cp310-macosx_10_9_x86_64.whl", hash = "sha256:485a8942f671120f76afffff70f259e1cd0f0cfe08f81c05d8816d958d4577d3"},
+    {file = "mypy-1.8.0-cp310-cp310-macosx_11_0_arm64.whl", hash = "sha256:df9824ac11deaf007443e7ed2a4a26bebff98d2bc43c6da21b2b64185da011c4"},
+    {file = "mypy-1.8.0-cp310-cp310-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:2afecd6354bbfb6e0160f4e4ad9ba6e4e003b767dd80d85516e71f2e955ab50d"},
+    {file = "mypy-1.8.0-cp310-cp310-musllinux_1_1_x86_64.whl", hash = "sha256:8963b83d53ee733a6e4196954502b33567ad07dfd74851f32be18eb932fb1cb9"},
+    {file = "mypy-1.8.0-cp310-cp310-win_amd64.whl", hash = "sha256:e46f44b54ebddbeedbd3d5b289a893219065ef805d95094d16a0af6630f5d410"},
+    {file = "mypy-1.8.0-cp311-cp311-macosx_10_9_x86_64.whl", hash = "sha256:855fe27b80375e5c5878492f0729540db47b186509c98dae341254c8f45f42ae"},
+    {file = "mypy-1.8.0-cp311-cp311-macosx_11_0_arm64.whl", hash = "sha256:4c886c6cce2d070bd7df4ec4a05a13ee20c0aa60cb587e8d1265b6c03cf91da3"},
+    {file = "mypy-1.8.0-cp311-cp311-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:d19c413b3c07cbecf1f991e2221746b0d2a9410b59cb3f4fb9557f0365a1a817"},
+    {file = "mypy-1.8.0-cp311-cp311-musllinux_1_1_x86_64.whl", hash = "sha256:9261ed810972061388918c83c3f5cd46079d875026ba97380f3e3978a72f503d"},
+    {file = "mypy-1.8.0-cp311-cp311-win_amd64.whl", hash = "sha256:51720c776d148bad2372ca21ca29256ed483aa9a4cdefefcef49006dff2a6835"},
+    {file = "mypy-1.8.0-cp312-cp312-macosx_10_9_x86_64.whl", hash = "sha256:52825b01f5c4c1c4eb0db253ec09c7aa17e1a7304d247c48b6f3599ef40db8bd"},
+    {file = "mypy-1.8.0-cp312-cp312-macosx_11_0_arm64.whl", hash = "sha256:f5ac9a4eeb1ec0f1ccdc6f326bcdb464de5f80eb07fb38b5ddd7b0de6bc61e55"},
+    {file = "mypy-1.8.0-cp312-cp312-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:afe3fe972c645b4632c563d3f3eff1cdca2fa058f730df2b93a35e3b0c538218"},
+    {file = "mypy-1.8.0-cp312-cp312-musllinux_1_1_x86_64.whl", hash = "sha256:42c6680d256ab35637ef88891c6bd02514ccb7e1122133ac96055ff458f93fc3"},
+    {file = "mypy-1.8.0-cp312-cp312-win_amd64.whl", hash = "sha256:720a5ca70e136b675af3af63db533c1c8c9181314d207568bbe79051f122669e"},
+    {file = "mypy-1.8.0-py3-none-any.whl", hash = "sha256:538fd81bb5e430cc1381a443971c0475582ff9f434c16cd46d2c66763ce85d9d"},
+    {file = "mypy-1.8.0.tar.gz", hash = "sha256:6ff8b244d7085a0b425b56d327b480c3b29cafbd2eff27316a004f9a7391ae07"},
+]
+
 [[package]]
 name = "mypy-extensions"
 version = "1.0.0"
diff --git a/pyproject.toml b/pyproject.toml
index 08644aa..8f9c709 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -20,6 +20,7 @@ license = {text = "MIT"}
 [tool.pdm.scripts]
 start = "uvicorn src.paste.main:app --host 0.0.0.0 --port 8080 --workers 4"
 test = "pytest"
+mypy = "mypy src/paste"
 
 [tool.pdm.dev-dependencies]
 test = [
@@ -33,3 +34,10 @@ lint = [
 hooks = [
     "pre-commit>=3.6.0",
 ]
+typing = [
+    "mypy>=1.8.0",
+]
+
+[tool.ruff]
+line-length = 160
+exclude = ["data/*", ".git"]
\ No newline at end of file
diff --git a/src/paste/main.py b/src/paste/main.py
index 1fc041c..f61a411 100644
--- a/src/paste/main.py
+++ b/src/paste/main.py
@@ -1,10 +1,24 @@
-from fastapi import File, UploadFile, HTTPException, status, Request, Form, FastAPI, Header
-from fastapi.responses import PlainTextResponse, HTMLResponse, RedirectResponse, JSONResponse
+from fastapi import (
+    File,
+    UploadFile,
+    HTTPException,
+    status,
+    Request,
+    Form,
+    FastAPI,
+    Header,
+    Response,
+)
+from fastapi.responses import (
+    PlainTextResponse,
+    HTMLResponse,
+    RedirectResponse,
+    JSONResponse,
+)
 import shutil
 import os
 import json
 from pathlib import Path
-from fastapi import FastAPI
 from fastapi.templating import Jinja2Templates
 from fastapi.middleware.cors import CORSMiddleware
 from slowapi.errors import RateLimitExceeded
@@ -16,7 +30,7 @@
 from pygments.lexers import get_lexer_by_name, guess_lexer
 from pygments.formatters import HtmlFormatter
 from pygments.util import ClassNotFound
-from typing import List, Optional, Any
+from typing import List, Optional
 
 limiter = Limiter(key_func=get_remote_address)
 app: FastAPI = FastAPI(title="paste.py 🐍")
@@ -41,21 +55,24 @@
 
 BASE_DIR: Path = Path(__file__).resolve().parent
 
-templates: Jinja2Templates = Jinja2Templates(
-    directory=str(Path(BASE_DIR, "templates")))
+templates: Jinja2Templates = Jinja2Templates(directory=str(Path(BASE_DIR, "templates")))
 
 
 @app.post("/file")
 @limiter.limit("100/minute")
-async def post_as_a_file(request: Request, file: UploadFile = File(...)) -> PlainTextResponse:
+async def post_as_a_file(
+    request: Request, file: UploadFile = File(...)
+) -> PlainTextResponse:
     try:
         uuid: str = generate_uuid()
         if uuid in large_uuid_storage:
             uuid = generate_uuid()
         # Extract file extension from the filename
         try:
-            file_extension: str = Path(file.filename).suffix[1:]
-            path: str = f"data/{uuid}.{file_extension}"
+            file_extension: Optional[str] = None
+            if file.filename is not None:
+                file_extension = Path(file.filename).suffix[1:]
+            path: str = f"data/{uuid}{file_extension}"
         except Exception:
             path = f"data/{uuid}"
         finally:
@@ -63,7 +80,6 @@ async def post_as_a_file(request: Request, file: UploadFile = File(...)) -> Plai
         with open(path, "wb") as f:
             shutil.copyfileobj(file.file, f)
             large_uuid_storage.append(uuid)
-            print(large_uuid_storage)
     except Exception:
         raise HTTPException(
             detail="There was an error uploading the file",
@@ -75,7 +91,9 @@ async def post_as_a_file(request: Request, file: UploadFile = File(...)) -> Plai
 
 
 @app.get("/paste/{uuid}")
-async def get_paste_data(uuid: str, user_agent: Optional[str] = Header(None)) -> Any:
+async def get_paste_data(
+    uuid: str, user_agent: Optional[str] = Header(None)
+) -> Response:
     path: str = f"data/{uuid}"
     try:
         with open(path, "rb") as f:
@@ -97,13 +115,11 @@ async def get_paste_data(uuid: str, user_agent: Optional[str] = Header(None)) ->
                 try:
                     lexer = get_lexer_by_name(file_extension, stripall=True)
                 except ClassNotFound:
-                    lexer = get_lexer_by_name(
-                        "text", stripall=True)  # Default lexer
+                    lexer = get_lexer_by_name("text", stripall=True)  # Default lexer
             formatter = HtmlFormatter(
-                style="colorful", full=True, linenos="inline", cssclass='code')
+                style="colorful", full=True, linenos="inline", cssclass="code"
+            )
             highlighted_code: str = highlight(content, lexer, formatter)
-
-            print(highlighted_code)
             custom_style = """
             .code pre span.linenos {
                 color: #999;
@@ -154,11 +170,8 @@ async def get_paste_data(uuid: str, user_agent: Optional[str] = Header(None)) ->
                     </body>
                 </html>
                 """
-            return HTMLResponse(
-                content=response_content
-            )
-    except Exception as e:
-        print(e)
+            return HTMLResponse(content=response_content)
+    except Exception:
         raise HTTPException(
             detail="404: The Requested Resource is not found",
             status_code=status.HTTP_404_NOT_FOUND,
@@ -166,7 +179,7 @@ async def get_paste_data(uuid: str, user_agent: Optional[str] = Header(None)) ->
 
 
 @app.get("/", response_class=HTMLResponse)
-async def indexpage(request: Request) -> HTMLResponse:
+async def indexpage(request: Request) -> Response:
     return templates.TemplateResponse("index.html", {"request": request})
 
 
@@ -187,7 +200,7 @@ async def delete_paste(uuid: str) -> PlainTextResponse:
 
 
 @app.get("/web", response_class=HTMLResponse)
-async def web(request: Request) -> HTMLResponse:
+async def web(request: Request) -> Response:
     return templates.TemplateResponse("web.html", {"request": request})
 
 
@@ -209,8 +222,7 @@ async def web_post(
         with open(path, "wb") as f:
             f.write(file_content)
             large_uuid_storage.append(uuid_)
-    except Exception as e:
-        print(e)
+    except Exception:
         raise HTTPException(
             detail="There was an error uploading the file",
             status_code=status.HTTP_403_FORBIDDEN,
diff --git a/src/paste/templates/index.html b/src/paste/templates/index.html
index 3bb2389..d6412d2 100644
--- a/src/paste/templates/index.html
+++ b/src/paste/templates/index.html
@@ -1,15 +1,18 @@
 <!DOCTYPE html>
 <html lang="en">
   <head>
-      <title>Codestin Search App</title>
-      <meta charset="UTF-8"/>
-      <meta name="viewport" content="width=device-width, initial-scale=1.0"/>
-      <meta name="og:title" content="paste.py 🐍"/>
-      <meta name="og:site_name" content="paste.py"/>
-      <meta name="og:description" content="A simple pastebin powered by FastAPI."/>
-      <meta name="og:type" content="website"/>
-      <meta name="og:url" content="https://paste.fosscu.org"/>
-      <meta name="og:locale" content="en_US"/>
+    <title>Codestin Search App</title>
+    <meta charset="UTF-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <meta name="og:title" content="paste.py 🐍" />
+    <meta name="og:site_name" content="paste.py" />
+    <meta
+      name="og:description"
+      content="A simple pastebin powered by FastAPI."
+    />
+    <meta name="og:type" content="website" />
+    <meta name="og:url" content="https://paste.fosscu.org" />
+    <meta name="og:locale" content="en_US" />
     <style>
       body {
         font-family: sans-serif;
@@ -109,7 +112,7 @@ <h3>EXAMPLES</h3>
     A shell function that can be added to <strong>.bashrc</strong> or <strong>.bash_profle</strong> or <strong>.zshrc</strong> for
     quick pasting from the command line. The command takes a filename or reads
     from stdin if none was supplied and outputs the URL of the paste to
-    stdout: <pre>paste file.txt</pre> or <pre>echo "hi" | paste</pre></p>
+    stdout: <pre>paste file.txt</pre> <!-- or <pre>echo "hi" | paste</pre></p> -->
 
   
 </pre>
diff --git a/src/paste/utils.py b/src/paste/utils.py
index d2e50ce..50c804f 100644
--- a/src/paste/utils.py
+++ b/src/paste/utils.py
@@ -1,18 +1,19 @@
 import random
 import string
 import os
+from pathlib import Path
 
 
-def generate_uuid():
+def generate_uuid() -> str:
     # Combine uppercase letters, lowercase letters, and digits
-    characters = string.ascii_letters + string.digits
+    characters: str = string.ascii_letters + string.digits
 
     # Generate a random 4-character code
-    random_code = ''.join(random.choice(characters) for _ in range(4))
+    random_code: str = "".join(random.choice(characters) for _ in range(4))
 
     return random_code
 
 
-def extract_extension(file_name):
+def extract_extension(file_name: Path) -> str:
     _, extension = os.path.splitext(file_name)
     return extension
diff --git a/tests/test_api.py b/tests/test_api.py
index 65f2b42..8eb8a25 100644
--- a/tests/test_api.py
+++ b/tests/test_api.py
@@ -1,10 +1,11 @@
 from fastapi.testclient import TestClient
 from src.paste.main import app
+from typing import Optional
 import os
 
 client: TestClient = TestClient(app)
 
-file: str = None
+file: Optional[str] = None
 
 
 def test_get_health_route() -> None: