tiff-to-pdf

main.py

"""
TIFF to PDF Converter

Convert single-page or multi-page TIFF/TIF files into a PDF.

Features:
- Supports .tif and .tiff files
- Supports multi-page TIFFs
- Handles truncated/corrupted TIFFs when possible
- Preserves page order

--------------------------------------------------
Setup
--------------------------------------------------

1. Create virtual environment

Windows:
    python -m venv venv

Activate:

    venv\Scripts\activate

2. Install dependencies

    pip install pillow

3. Run

    python main.py

4. Update input/output paths

    INPUT_TIFF = r"sample.tif"
    OUTPUT_PDF = r"sample.pdf"

--------------------------------------------------
Expected Output
--------------------------------------------------

PDF created successfully:
sample.pdf

--------------------------------------------------
"""


from pathlib import Path
from PIL import Image, ImageFile


# Allow partially corrupted TIFF files
ImageFile.LOAD_TRUNCATED_IMAGES = True


def tiff_to_pdf(tiff_path: str, pdf_path: str) -> None:
    """
    Convert TIFF/TIF file to PDF.

    Args:
        tiff_path: Input TIFF file path
        pdf_path: Output PDF file path
    """

    tiff_file = Path(tiff_path)
    pdf_file = Path(pdf_path)

    if not tiff_file.exists():
        raise FileNotFoundError(
            f"TIFF file not found: {tiff_file}"
        )

    try:
        img = Image.open(tiff_file)
    except Exception as exc:
        raise RuntimeError(
            f"Failed to open TIFF file: {exc}"
        ) from exc

    pages = []

    try:
        frame_count = getattr(img, "n_frames", 1)

        for frame_index in range(frame_count):
            img.seek(frame_index)

            page = (
                img.convert("RGB")
                if img.mode != "RGB"
                else img.copy()
            )

            pages.append(page)

    except Exception as exc:
        raise RuntimeError(
            f"Failed while reading TIFF pages: {exc}"
        ) from exc

    if not pages:
        raise RuntimeError(
            "No pages found in TIFF file"
        )

    try:
        pages[0].save(
            pdf_file,
            format="PDF",
            save_all=True,
            append_images=pages[1:]
        )

    except Exception as exc:
        raise RuntimeError(
            f"Failed to generate PDF: {exc}"
        ) from exc

    print(f"PDF created successfully: {pdf_file}")


if __name__ == "__main__":

    INPUT_TIFF = "sample.tif"
    OUTPUT_PDF = "sample.pdf"

    tiff_to_pdf(
        INPUT_TIFF,
        OUTPUT_PDF
    )