Upstage Document Parsing Plugin for Dify

A powerful document parsing plugin for the Dify platform that leverages the Upstage Document Parse API to convert various document formats into structured Markdown, HTML, or plain text.

Features

• Broad format support: Handles PDF, DOCX, and various image formats
• Intelligent document understanding: Extracts text, tables, charts, and figures while preserving original structure
• Multiple output formats: Converts documents to Markdown, HTML, or plain text
• Efficient caching: Content-based caching prevents reprocessing of identical files
• OCR capability: Extracts text from scanned documents and images
• Chart recognition: Identifies and extracts charts from documents
• Batch processing: Efficiently processes multi-page documents
• Coordinate extraction: Obtains bounding box coordinates for document elements

Installation

This plugin is under active development.

pip install -r requirements.txt

Configure the plugin in the Dify platform.

Configuration

Required credentials

The plugin requires the following credentials:

• upstage_api_key: Upstage API key (obtain it from the Upstage Console)
• base_url: Base URL for your Dify instance (default: "https://cloud.dify.ai")

Parameter options

You can configure the following parameters when using the tool:

• result_type: Output format (options: "md", "html", "text")
• as_file: Whether to return the result as a file or text (options: "file", "text")

Usage

In a Dify application

1. Add the Upstage Document Parse tool to your application.
2. Configure the required credentials.
3. Use the tool within your application flow to process documents.

Direct usage in Python

You can also use the client directly in Python:

from tools.upstage_client import UpstageDocumentParseClient

# Initialize the client
client = UpstageDocumentParseClient(
    api_key="your_upstage_api_key",
    output_dir="exported_documents"
)

# Convert a document to Markdown
markdown_content = client.convert_to_markdown("path/to/your/document.pdf")

# Convert a document to HTML
html_content = client.convert_to_html("path/to/your/document.docx")

# Convert a document to plain text
text_content = client.convert_to_text("path/to/your/image.jpg")

API Parameters

The plugin uses the following parameters when calling the Upstage Document Parse API:

Parameter	Type	Description	Default
document	File	The document file to process	Required
ocr	String	Control OCR behavior: "auto" (applies only to images) or "force" (convert everything to images first)	"auto"
coordinates	Boolean	Whether to return bounding box coordinates	false
chart_recognition	Boolean	Whether to use chart recognition	true
output_formats	List[String]	Formats for layout elements: "text", "html", "markdown"	["html", "markdown", "text"]
model	String	Model used for inference	"document-parse-250618"
base64_encoding	List[String]	Layout categories to provide as base64-encoded strings	["table", "figure", "chart"]

Caching Mechanism

The plugin implements an efficient caching system:

1. File content hashing to identify duplicate documents
2. Result caching based on content hash and output format
3. TTL-based cache expiration (default: 1 hour)

Examples

Convert a PDF to Markdown

client = UpstageDocumentParseClient(api_key="your_api_key")
markdown = client.convert_to_markdown("sample.pdf")
print(markdown)

Handling large documents

client = UpstageDocumentParseClient(api_key="your_api_key")
exported_files = client.process_document(
    "large_document.pdf",
    wait=True,
    poll_interval=2,
    max_wait=600
)
print(f"Exported files: {exported_files}")

Development

Project structure

• upstage-documentparse.py: Main Dify plugin integration
• upstage_client.py: Core client that interacts with the Upstage API
• requirements.txt: Python dependencies