In this tutorial, we'll show you **how to add and use custom fonts in FPDF2**, a powerful and lightweight PDF generation library in Python. If you're generating PDFs for branding, design, or personal use, custom fonts can greatly enhance the look and feel of your documents.

By default, FPDF2 only supports a few core fonts (like Arial, Times, Courier), but you can easily extend this by registering your own **.TTF (TrueType Font)** files. This is incredibly helpful if you need to match a company’s visual identity or just want your PDFs to look more polished and professional.

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### What You'll Learn:

How to install and set up FPDF2
How to convert `.ttf` font files into a format FPDF2 can use
How to register and use custom fonts in your PDF
How to set font size, style, and encoding
Best practices for using fonts in multilingual or Unicode content

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### Tools You'll Need:

- Python installed on your system
- `fpdf2` library
- Your custom `.ttf` font file (e.g., Roboto, Open Sans, etc.)
- (Optional) `fontTools` or `ttf2ufm` to handle complex encodings

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### Sample Steps (Conceptual):

1. **Install FPDF2**:
```bash
pip install fpdf
```

2. **Register a Custom Font**:
```python
from fpdf import FPDF

pdf = FPDF()
pdf.add_page()
pdf.add_font("Roboto", "", "Roboto-Regular.ttf", uni=True)
pdf.set_font("Roboto", size=14)
pdf.cell(200, 10, txt="Hello with Roboto font!", ln=True)
pdf.output("custom_font_pdf.pdf")
```

3. **Use Bold or Italic Variants** (if available):
```python
pdf.add_font("Roboto", "B", "Roboto-Bold.ttf", uni=True)
pdf.set_font("Roboto", "B", 16)
```

4. **Create the Final PDF**:
Save and open the generated PDF to see your custom fonts in action.

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### Tips:

- Always use `uni=True` for Unicode support if you are working with special characters or multilingual content.
- Keep font files organized in a `/fonts` directory for better project management.
- Consider embedding only necessary font subsets for lightweight PDFs.

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