Page Range Processing

Process specific pages from a document instead of the entire document.

The pageRange parameter allows you to target specific pages for extraction, which is useful for:

• Multi-section documents: Extract data from specific sections (e.g., pages 1-3 for identification, pages 8-10 for physical properties)
• Large documents: Focus on relevant pages without processing the entire document
• Multi-pass processing: Upload once, extract different data from different page ranges

How It Works

1. Upload your document normally
2. Specify pageRange with 1-indexed page numbers
3. Only specified pages are sent to the AI for extraction

Page Numbering

Pages are 1-indexed, meaning the first page is page 1 (not 0).

Basic Usage

Python SDK

from docudevs.docudevs_client import DocuDevsClient
import os
import asyncio

client = DocuDevsClient(token=os.getenv('API_KEY'))

async def extract_first_page():
    with open("document.pdf", "rb") as f:
        document_data = f.read()

    # Process only page 1
    guid = await client.submit_and_process_document(
        document=document_data,
        document_mime_type="application/pdf",
        prompt="Extract the title and summary.",
        page_range=[1]
    )
    
    result = await client.wait_until_ready(guid, result_format="json")
    print(result)

asyncio.run(extract_first_page())

cURL

# Upload the document
GUID=$(curl -s -X POST https://api.docudevs.ai/document/upload \
  -H "Authorization: Bearer $API_KEY" \
  -F "document=@document.pdf" | jq -r '.guid')

# Process only page 1
curl -X POST "https://api.docudevs.ai/document/process/$GUID" \
  -H "Authorization: Bearer $API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "prompt": "Extract the title and summary.",
    "mimeType": "application/pdf",
    "pageRange": [1]
  }'

Processing Multiple Specific Pages

You can specify any combination of pages:

# Process pages 1, 3, and 5
guid = await client.submit_and_process_document(
    document=document_data,
    document_mime_type="application/pdf",
    prompt="Extract data from these specific pages.",
    page_range=[1, 3, 5]
)

# Process pages 8-10
guid = await client.submit_and_process_document(
    document=document_data,
    document_mime_type="application/pdf",
    prompt="Extract physical properties.",
    page_range=[8, 9, 10]
)

Combined with Map-Reduce

Page range works with map-reduce processing. The specified pages are first filtered, then chunked and processed:

# Document has 20 pages, but we only want pages 1-2, 5-6, and 10-11
# These 6 pages will be chunked into 3 chunks of 2 pages each
guid = await client.submit_and_process_document_map_reduce(
    document=document_data,
    document_mime_type="application/pdf",
    prompt="Extract all items from these pages.",
    schema=items_schema,
    pages_per_chunk=2,
    page_range=[1, 2, 5, 6, 10, 11]
)

Processing Order

With page_range=[1, 2, 5, 6, 10, 11] and pages_per_chunk=2:

• Chunk 1: Pages 1-2 (original document pages 1-2)
• Chunk 2: Pages 5-6 (original document pages 5-6)
• Chunk 3: Pages 10-11 (original document pages 10-11)

Each page is processed exactly once.

Use Case: Safety Data Sheets (SDS)

Safety Data Sheets have 16 standardized sections spread across many pages. You can extract specific sections using page ranges:

# SDS document is 14 pages

# Extract Section 1: Identification (typically page 1)
identification_guid = await client.submit_and_process_document(
    document=sds_document,
    document_mime_type="application/pdf",
    prompt="Extract product name, manufacturer, and emergency contact.",
    schema=identification_schema,
    page_range=[1]
)

# Extract Section 9: Physical Properties (typically pages 8-9)
properties_guid = await client.submit_and_process_document(
    document=sds_document,
    document_mime_type="application/pdf",
    prompt="Extract appearance, odor, boiling point, and flash point.",
    schema=properties_schema,
    page_range=[8, 9]
)

# Extract Section 14-16: Transport & Regulatory (typically pages 12-14)
regulatory_guid = await client.submit_and_process_document(
    document=sds_document,
    document_mime_type="application/pdf",
    prompt="Extract transport classification and regulatory information.",
    schema=regulatory_schema,
    page_range=[12, 13, 14]
)

Limitations

OCR Compatibility

Page range requires page break markers from OCR, which are only available with DEFAULT or PREMIUM OCR modes.

LOW OCR Not Supported

pageRange cannot be used with ocr=LOW because the LOW OCR mode (MarkItDown) does not produce page break markers.

# This will raise an error
await client.submit_and_process_document(
    document=document_data,
    document_mime_type="application/pdf",
    page_range=[1, 2],
    ocr="LOW"  # ❌ Not supported
)

Out-of-Range Pages

Pages that don't exist in the document are silently ignored:

# Document has 10 pages
# Pages 11-15 will be ignored, only pages 8-10 are processed
guid = await client.submit_and_process_document(
    document=document_data,
    document_mime_type="application/pdf",
    prompt="Extract content.",
    page_range=[8, 9, 10, 11, 12, 13, 14, 15]
)

API Reference

Parameter	Type	Description
pageRange	list[int]	List of 1-indexed page numbers to process. If not provided, all pages are processed.

The parameter is available in:

• submit_and_process_document()
• submit_and_process_document_map_reduce()
• process_document() (via UploadCommand)
• process_document_map_reduce()
• Direct API calls to /document/process/{guid}