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id: convert-document-to-multiple-page-files url: conversion/python-net/developer-guide/converting-documents/convert-document-to-multiple-page-files title: Convert a Document to Multiple Page Files linkTitle: Convert to Multiple Files weight: 3 description: “Render every page of a multi-page document into its own output file — loop page_number with pages_count=1 and Converter.convert() to produce one PNG, PDF, or image per page with GroupDocs.Conversion for Python via .NET.” keywords: convert to multiple files, per-page output, page_number, pages_count, page loop, convert presentation pages, convert PDF pages to PNG, ImageConvertOptions, GroupDocs.Conversion, python productName: GroupDocs.Conversion for Python via .NET hideChildren: false toc: true
This documentation topic covers the conversion of a single multi-page document into individual page files. The following diagram illustrates the process of converting a multi-page file into separate pages:
flowchart LR %% Nodes A[“Input Document”] B[“Conversion”] C[“Converted Page 1”] D[“Converted Page 2”] E[“Converted Page N”]
%% Edge connections between nodes
A --> B --> C
B --> D
B --> E
To convert a document into per-page files, use the Converter.convert(file_path, convert_options) method together with the page_number and pages_count attributes on the supported ConvertOptions classes:
page_number: One-based index of the first page to convert.pages_count: Number of consecutive pages to convert starting frompage_number.
To produce one output file per page, loop from 1 to converter.get_document_info().pages_count, updating page_number on each iteration and writing to a different output path. Setting pages_count = 1 ensures each call emits a single page.
The following ConvertOptions classes expose the page_number and pages_count attributes used in this topic:
- PdfConvertOptions – Options for converting to PDF format.
- ImageConvertOptions – Options for converting to Image formats (e.g., PNG, JPEG).
- WordProcessingConvertOptions – Options for converting to Word Processing formats.
- SpreadsheetConvertOptions – Options for converting to Spreadsheet formats.
- PresentationConvertOptions – Options for converting to Presentation formats.
- WebConvertOptions – Options for converting to Web formats (e.g., HTML).
- EBookConvertOptions – Options for converting to EBook formats (e.g., EPUB, MOBI).
- DiagramConvertOptions – Options for converting to Diagram formats (e.g., VSDX).
- PageDescriptionLanguageConvertOptions – Options for converting to Page Description Language formats (e.g., PostScript).
- CadConvertOptions – Options for converting to CAD formats (e.g., DWG).
- ThreeDConvertOptions – Options for converting to 3D formats.
- FinanceConvertOptions – Options for converting to Finance formats (e.g., XBRL).
The following example demonstrates how to convert each slide in a PPTX presentation to a PNG image and save the output images to a specified folder.
The file name template for the output files is converted-page-{page number}.{output file extension}. In this example, the first slide will be saved as converted-page-1.png.
import os
from groupdocs.conversion import Converter
from groupdocs.conversion.filetypes import ImageFileType
from groupdocs.conversion.options.convert import ImageConvertOptions
def convert_all_document_pages():
output_folder = "./converted-pages"
os.makedirs(output_folder, exist_ok=True)
# Instantiate Converter with the input document
with Converter("./basic-presentation.pptx") as converter:
# Determine the total number of pages in the source document
pages_count = converter.get_document_info().pages_count
# Instantiate convert options once and reuse them inside the loop
png_convert_options = ImageConvertOptions()
png_convert_options.format = ImageFileType.PNG
png_convert_options.pages_count = 1
# Convert each page to a separate PNG file
for page_number in range(1, pages_count + 1):
png_convert_options.page_number = page_number
output_file = os.path.join(output_folder, f"converted-page-{page_number}.png")
converter.convert(output_file, png_convert_options)
if __name__ == "__main__":
convert_all_document_pages()
basic-presentation.pptx is the sample file used in this example. Click here to download it.
converted-pages/converted-page-1.png (26 KB)
converted-pages/converted-page-10.png (81 KB)
converted-pages/converted-page-11.png (67 KB)
converted-pages/converted-page-12.png (70 KB)
converted-pages/converted-page-13.png (36 KB)
converted-pages/converted-page-2.png (34 KB)
converted-pages/converted-page-3.png (797 KB)
converted-pages/converted-page-4.png (1262 KB)
converted-pages/converted-page-5.png (75 KB)
converted-pages/converted-page-6.png (33 KB)
[TRUNCATED] (13 files total)
Find out how to get the number of document pages in the Getting Document Information documentation topic.
The following example shows how to convert a specific slide in a PPTX presentation and save it as a separate file.
from groupdocs.conversion import Converter
from groupdocs.conversion.filetypes import ImageFileType
from groupdocs.conversion.options.convert import ImageConvertOptions
def convert_specific_document_page_to_file():
# Instantiate Converter with the input document
with Converter("./basic-presentation.pptx") as converter:
# Instantiate convert options
png_convert_options = ImageConvertOptions()
# Define the output format as PNG
png_convert_options.format = ImageFileType.PNG
# Specify the single page to convert
png_convert_options.page_number = 3
png_convert_options.pages_count = 1
# Save the converted page to a file
converter.convert("./slide-3.png", png_convert_options)
if __name__ == "__main__":
convert_specific_document_page_to_file()
basic-presentation.pptx is the sample file used in this example. Click here to download it.
Binary file (PNG, 797 KB)
Find out how to get the number of document pages in the Getting Document Information documentation topic.
If you need the converted page as an in-memory buffer (e.g., to forward it to another API without touching the filesystem afterwards), convert the page to a file first and then read it into a BytesIO object:
import io
from groupdocs.conversion import Converter
from groupdocs.conversion.filetypes import ImageFileType
from groupdocs.conversion.options.convert import ImageConvertOptions
def convert_specific_document_page_to_stream():
page_number_to_convert = 5
output_file = f"./slide-{page_number_to_convert}.png"
# Instantiate Converter with the input document
with Converter("./basic-presentation.pptx") as converter:
# Instantiate convert options
png_convert_options = ImageConvertOptions()
# Define the output format as PNG
png_convert_options.format = ImageFileType.PNG
# Specify the single page to convert
png_convert_options.page_number = page_number_to_convert
png_convert_options.pages_count = 1
# Convert and save the page to a file on disk
converter.convert(output_file, png_convert_options)
# Load the converted page into an in-memory stream for downstream use
with open(output_file, "rb") as file_handle:
page_stream = io.BytesIO(file_handle.read())
# page_stream now holds the PNG bytes and can be passed to any consumer
print(f"Loaded {page_stream.getbuffer().nbytes} bytes into memory")
if __name__ == "__main__":
convert_specific_document_page_to_stream()
basic-presentation.pptx is the sample file used in this example. Click here to download it.
Binary file (PNG, 75 KB)
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