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GroupDocs.Viewer for Python via .NET Downloads

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GroupDocs.Viewer for Python via .NET is a document rendering API that displays 190+ file formats — DOCX, PDF, XLSX, PPTX, CAD drawings, email messages, archives, and more — as HTML, PNG, JPG, or PDF. It preserves layout and formatting while offering per-format rendering options.

Get Started

pip install groupdocs-viewer-net

from groupdocs.viewer import Viewer
from groupdocs.viewer.options import HtmlViewOptions

with Viewer("document.docx") as viewer:
    options = HtmlViewOptions.for_embedded_resources("page_{0}.html")
    viewer.view(options)

How It Works

The package is a self-contained Python wheel (~160 MB) that includes everything needed to render documents. No external software installation is required — just pip install and start viewing. The wheel works across Python 3.5 – 3.14 on Windows, Linux, and macOS (Intel + Apple Silicon).

Features

Wide Format Support: 190+ file formats across Microsoft Office, PDF, images, CAD, email, and archives.
Flexible Output: Render to HTML (embedded or external resources), PNG, JPG, or PDF.
Page Control: Render whole documents, selected pages, page ranges, or reordered pages.
Custom Streams: Route each page or resource to a Python-provided stream factory — no disk writes required.
Cross-Platform: Windows x64, Linux x64, macOS x64/ARM64.

Common Tasks

Render DOCX, PDF, XLSX, or PPTX to HTML for an in-browser document viewer
Generate per-page PNG or JPG thumbnails and previews
Produce a print-ready PDF from any supported format
View CAD drawings (DWG, DXF) without AutoCAD
Display email messages (MSG, EML) together with their attachments
Render specific pages, page ranges, or reordered pages
Feed rendered HTML or page images into an AI / RAG document-preview pipeline

Supported File Formats

For a complete list, see supported formats.

Microsoft Office (Word, Excel, PowerPoint, Visio, Project, Outlook)
PDF (Standard PDFs, PDF/A)
OpenDocument (ODT, ODS, ODP)
Images (JPEG, PNG, TIFF, BMP, SVG, WebP, DICOM)
Email (EML, MSG, PST, OST)
eBook (EPUB, MOBI, AZW3)
Archives (ZIP, TAR, RAR, 7Z)
AutoCAD (DWG, DXF, DGN, IFC)
Web (HTML, MHTML, CHM, XML)

Platform & Format Support

Format family	Windows	Linux / macOS
Photoshop (PSD, PSB)	Yes	No
Adobe Illustrator (AI)	Yes	No
OneNote (ONE)	Yes	No
All other formats (Office, PDF, Visio, Project, CAD, images, email, archives, eBooks, web, …)	Yes	Yes

The Linux and macOS wheels run the cross-platform build of the engine, which renders every format except Photoshop (PSD, PSB), Adobe Illustrator (AI) and OneNote — render those on Windows. Everything else works on all platforms, including Visio and, since 26.9, Microsoft Project (MPP, MPT, MPX); on Linux, Project files need the Microsoft core fonts (ttf-mscorefonts-installer).

Examples

Render DOCX to HTML (embedded resources)

from groupdocs.viewer import Viewer
from groupdocs.viewer.options import HtmlViewOptions

with Viewer("./document.docx") as viewer:
    viewer.view(HtmlViewOptions.for_embedded_resources("./out/page_{0}.html"))

Render selected pages to PNG

from groupdocs.viewer import Viewer
from groupdocs.viewer.options import PngViewOptions

with Viewer("./document.pdf") as viewer:
    viewer.view(PngViewOptions("./out/page_{0}.png"), page_numbers=[1, 3, 5])

Render with Advanced Options

from groupdocs.viewer import Viewer
from groupdocs.viewer.options import HtmlViewOptions, LoadOptions, Watermark

load_options = LoadOptions()
load_options.password = "12345"

with Viewer("./protected.docx", load_options) as viewer:
    options = HtmlViewOptions.for_embedded_resources("./out/page_{0}.html")
    options.watermark = Watermark("CONFIDENTIAL")
    options.render_responsive = True
    viewer.view(options)

Get View Info

from groupdocs.viewer import Viewer
from groupdocs.viewer.options import ViewInfoOptions

with Viewer("./document.pdf") as viewer:
    info = viewer.get_view_info(ViewInfoOptions.for_html_view())
    print(f"Pages: {len(info.pages)}")

Render from Stream / BytesIO

import io
from groupdocs.viewer import Viewer
from groupdocs.viewer.options import HtmlViewOptions

with open("document.docx", "rb") as stream:
    with Viewer(stream) as viewer:
        viewer.view(HtmlViewOptions.for_embedded_resources("./out/page_{0}.html"))

buf = io.BytesIO(downloaded_bytes)
with Viewer(buf) as viewer:
    viewer.view(HtmlViewOptions.for_embedded_resources("./out/page_{0}.html"))

Render to Custom Streams (no disk writes)

import io
from groupdocs.viewer import Viewer
from groupdocs.viewer.options import PngViewOptions

pages: dict[int, io.BytesIO] = {}
def create_page(page_number):
    pages[page_number] = io.BytesIO()
    return pages[page_number]

with Viewer("./document.docx") as viewer:
    viewer.view(PngViewOptions(create_page))
# pages now holds {1: <BytesIO>, 2: <BytesIO>, ...}

AI Agent & LLM Friendly

This package is designed for seamless integration with AI agents, LLMs, and automated code generation tools.

AGENTS.md in the package — AI coding assistants (Claude Code, Cursor, GitHub Copilot) auto-discover the API surface, usage patterns, and troubleshooting tips from the installed package

MCP server — connect your AI tool to GroupDocs documentation for on-demand API lookups:

{ "mcpServers": { "groupdocs-docs": { "url": "https://docs.groupdocs.com/mcp" } } }

Machine-readable docs — full documentation available as plain text for RAG and LLM context:
- Single file: https://docs.groupdocs.com/viewer/python-net/llms-full.txt
- Per page: append .md to any docs URL

Evaluation Mode

The API works without a license in evaluation mode with the following limitations:

A watermark is added to rendered output.
Only the first few pages are rendered.

To remove these limitations, apply a license or request a temporary license:

from groupdocs.viewer import License
License().set_license("path/to/license.lic")

Or set the environment variable (auto-applied at import):

export GROUPDOCS_LIC_PATH="path/to/license.lic"

Troubleshooting

Issue	Platform	Fix
`Failed to detect file type` for a PSD, PSB, AI or ONE file	Linux/macOS	These formats are Windows-only — render them on Windows
`Cannot find fallback font 'Generic Sans Serif'` rendering MPP/MPT/MPX	Linux	`apt-get install ttf-mscorefonts-installer && fc-cache -f` (Debian: enable `contrib`) — Liberation fonts do not satisfy this lookup
Garbled text or missing fonts in rendered HTML/PDF	Linux	`apt-get install ttf-mscorefonts-installer fontconfig && fc-cache -f`
`DOTNET_SYSTEM_GLOBALIZATION_INVARIANT` errors	Linux	Do NOT set this variable. ICU must be available (`apt-get install libicu-dev`).
`DllNotFoundException: libSkiaSharp` after upgrading	macOS	An older system copy is shadowing the bundled one: `sudo mv /usr/local/lib/libSkiaSharp.dylib /usr/local/lib/libSkiaSharp.dylib.bak`

libgdiplus is not required. Since 26.9 the Linux and macOS wheels render through SkiaSharp and Aspose.Drawing and never call libgdiplus — every documented example passes in a Linux container without it. You can drop libgdiplus / mono-libgdiplus from your images and provisioning scripts.

System Requirements

Python 3.5 - 3.14
Windows x64, Linux x64, macOS x64/ARM64 — 64-bit Python only; there is no 32-bit Windows wheel

More Resources

Also available for other platforms: .NET | Java | Node.js

GroupDocs.Viewer GroupDocs.Total Python PyPi Document-Rendering PDF-Generation HTML-Conversion Image-Extraction Cross-Platform AI-Integration

Direct Download

GroupDocs.Viewer for Python via .NET 26.9 Windows

Self-contained Python wheel of GroupDocs.Viewer 26.9 for Windows (x64). Compatible with Python 3.5-3.14. No external dependencies required. Render 190+ file formats to HTML, PNG, JPG, or PDF.

Added: 25/9/2026 Downloads: