diff --git a/README.md b/README.md
index 69854d4..5631cff 100644
--- a/README.md
+++ b/README.md
@@ -206,13 +206,18 @@ Ensure you have **Python 3.12 or later** installed before proceeding with the in
 
 ```bash
 python3 --version
-```  
+```
+
+Subdominator core modules doesn't include PDF generation dependency, if you fancy a PDF report, use PDF extra tags when installing:
+```bash
+pipx install 'subdominator[PDF]'
+```
 
 #### ✅ **Install Subdominator from PyPI** (Recommended)  
 The easiest way to install Subdominator is via PyPI:  
 
 ```bash
-pip install --upgrade subdominator
+pip install --upgrade 'subdominator[PDF]'
 ```  
 
 #### ✅ **Install the Latest Version from GitHub**  
@@ -226,13 +231,13 @@ pip install --upgrade git+https://github.com/RevoltSecurities/Subdominator
 To avoid dependency conflicts, you can install Subdominator using `pipx`:  
 
 ```bash
-pipx install subdominator
+pipx install 'subdominator[PDF]'
 ```  
 
 To install the latest version from GitHub with `pipx`:  
 
 ```bash
-pipx install git+https://github.com/RevoltSecurities/Subdominator
+pipx install 'subdominator[PDF] @ git+https://github.com/RevoltSecurities/Subdominator'
 ```  
 
 #### ✅ **Install from Git Source** (For Development)  
@@ -242,7 +247,7 @@ For users who want to contribute or modify the tool, clone and install directly
 git clone https://github.com/RevoltSecurities/Subdominator.git
 cd Subdominator
 pip install --upgrade pip
-pip install -r requirements.txt
+pip install -e . # or pip install -e ".[PDF]" to support PDF report generation
 ```  
 
 After installation, you can verify if Subdominator is installed correctly by running:  
diff --git a/setup.py b/setup.py
index 6b99a55..aeda1e3 100644
--- a/setup.py
+++ b/setup.py
@@ -30,9 +30,13 @@
         'setuptools>=75.6.0',
         'SQLAlchemy>=2.0.32',
         'tldextract>=5.1.2',
-        'weasyprint>=65.0',
         'aiosqlite>=0.21.0',
     ],
+    extra_require={
+        "PDF": [
+            'weasyprint>=65.0',
+        ],
+    },
     entry_points={
         'console_scripts': [
             'subdominator = subdominator.subdominator:main'
diff --git a/subdominator/modules/shell/shell.py b/subdominator/modules/shell/shell.py
index 45ae80c..1d0b39f 100644
--- a/subdominator/modules/shell/shell.py
+++ b/subdominator/modules/shell/shell.py
@@ -9,7 +9,6 @@
 from rich.console import Console
 from rich.table import Table
 from jinja2 import Environment, FileSystemLoader
-from weasyprint import HTML
 
 console = Console()
 
@@ -191,7 +190,6 @@ async def generate_report(self,domain,output_file,format_type):
                 console.print(f"[bold green]HTML report saved as {output_file}[/bold green]")
             elif format_type.lower() == "pdf":
                 self.generate_pdf_report(html_report, output_file)
-                console.print(f"[bold green]PDF report saved as {output_file}[/bold green]")
             else:
                 console.print(f"[bold yellow]Report generation only supports pdf/html format, please use a valid report generation format.[/bold yellow]")
                 return
@@ -201,7 +199,14 @@ def generate_html_report(self, report_data, template_path):
         return template.render(domain=report_data["domain"], subdomains=report_data["subdomains"])
     
     def generate_pdf_report(self,html_report, output_file):
+        try:
+            from weasyprint import HTML
+        except ModuleNotFoundError:
+            console.print("[bold red]PDF report requires weasyprint module[/bold red]")
+            console.print("[bold green]Hint:[/bold green] pip install 'subdominator[PDF]'")
+            return
         HTML(string=html_report).write_pdf(output_file)
+        console.print(f"[bold green]PDF report saved as {output_file}[/bold green]")
     
     def load_subdomains_from_file(self, filename):
         if not os.path.exists(filename):
@@ -228,4 +233,4 @@ async def do_help(self):
   [bold][green]help[/green][/bold]                                  [bold]- Show this help menu[/bold]
   [bold][green]System Commands[/green][/bold]                       [bold]- ls, clear, pwd, cd, cat, echo, mkdir, rm, cp, mv[/bold]
             """
-        )
\ No newline at end of file
+        )