Convert a PDF File to Images

convert_pdf.py

"""
Converts PDF pages to images.

```python
pip install PyMuPDF
pip install PySimpleGUI
```

:See also:
    https://pymupdf.readthedocs.io/en/latest/faq.html
    https://towardsdatascience.com/convert-pdf-to-image-in-python-using-pymupdf-9cc8f602525b

:Authors:
    Thomas Zuberbuehler
"""

import os
import glob
import sys
import fitz

import PySimpleGUI as sg

layout = [
    [
        sg.Text("Input PDF File"),
        sg.InputText(key="filepath", readonly=True),
        sg.FileBrowse(key="selector", file_types=(("PDF Files", "*.pdf"),))
    ],
    [sg.Button("Convert", key="convert")],
]

def convert_pdf(filepath):

    if not filepath or not os.path.isfile(filepath):
        return

    filename = os.path.basename(filepath)
    folder = os.path.dirname(filepath)

    zoom_x = 3.0
    zoom_y = 3.0
    mat = fitz.Matrix(zoom_x, zoom_y)

    doc = fitz.open(filepath)
    for page in doc:
        pix = page.get_pixmap(matrix=mat)
        pix.save(os.path.join(folder, filename.replace(".pdf", f"{page.number}.png")))

    sg.Popup("PDF File successfully converted to PNG Images.", title="Done")

window = sg.Window("Flatten PDF pages", layout)

while True:
    event, values = window.read()
    if event == sg.WIN_CLOSED or event == 'Cancel':
        break
    if event == "selector":
        window["filepath"].update(values.get("selector", ""))
    if event == "convert":
        convert_pdf(values.get("filepath", None))

window.close()