เพิ่มข้อความลงในไฟล์ PDF ผ่าน Python

import aspose.pdf as ap

# Open document
document = ap.Document(input_pdf)

# Get particular page
page = document.pages[1]

# Create text fragment
text_fragment = ap.text.TextFragment("main text")
text_fragment.position = ap.text.Position(100, 600)

# Set text properties
text_fragment.text_state.font_size = 12
text_fragment.text_state.font = ap.text.FontRepository.find_font("TimesNewRoman")
text_fragment.text_state.background_color = ap.Color.light_gray
text_fragment.text_state.foreground_color = ap.Color.red

# Create TextBuilder object
builder = ap.text.TextBuilder(page)

# Append the text fragment to the PDF page
builder.append_text(text_fragment)

# Save resulting PDF document.
document.save(output_pdf)