docprompt 0.4.0

Documents and large language models.

Docprompt

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About

Docprompt is a library for Document AI. It aims to make enterprise-level document analysis easy thanks to the zero-shot capability of large language models.

Supercharged Document Analysis

• Common utilities for interacting with PDFs
  • PDF loading and serialization
  • PDF byte compression using Ghostscript :ghost:
  • Fast rasterization :fire: :rocket:
  • Page splitting, re-export with PDFium
  • Document Search, powered by Rust :fire:
• Support for most OCR providers with batched inference
  • Google :white_check_mark:
  • Azure Document Intelligence :red_circle:
  • Amazon Textract :red_circle:
  • Tesseract :red_circle:
• Prompt Garden for common document analysis tasks zero-shot, including:
  • Table Extraction
  • Page Classification
  • Segmentation
  • Key-value extraction

Documents and large language models

• Documentation: https://docprompt.dev
• GitHub: https://github.com/Page-Leaf/docprompt
• PyPI: https://pypi.org/project/docprompt/
• Free software: Apache-2.0

Features

• Representations for common document layout types - TextBlock, BoundingBox, etc
• Generic implementations of OCR providers
• Document Search powered by Rust and R-trees :fire:

Installation

Use the package manager pip to install Docprompt.

pip install docprompt

With an OCR provider

pip install "docprompt[google]

With search support

pip install "docprompt[search]"

Usage

Simple Operations

from docprompt import load_document

# Load a document
document = load_document("path/to/my.pdf")

# Rasterize a single page using Ghostscript
page_number = 5
rastered = document.rasterize_page(page_number, dpi=120)

# Split a pdf based on a page range
document_2 = document.split(start=125, stop=130)

Performing OCR

from docprompt import load_document, DocumentNode
from docprompt.tasks.ocr.gcp import GoogleOcrProvider

provider = GoogleOcrProvider.from_service_account_file(
  project_id=my_project_id,
  processor_id=my_processor_id,
  service_account_file=path_to_service_file
)

document = load_document("path/to/my.pdf")

# A container holds derived data for a document, like OCR or classification results
document_node = DocumentNode.from_document(document)

provider.process_document_node(document_node) # Caches results on the document_node

document_node[0].ocr_result # Access OCR results

Document Search

When a large language model returns a result, we might want to highlight that result for our users. However, language models return results as text, while what we need to show our users requires a page number and a bounding box.

After extracting text from a PDF, we can support this pattern using DocumentProvenanceLocator, which lives on a DocumentNode

from docprompt import load_document, DocumentNode
from docprompt.tasks.ocr.gcp import GoogleOcrProvider

provider = GoogleOcrProvider.from_service_account_file(
  project_id=my_project_id,
  processor_id=my_processor_id,
  service_account_file=path_to_service_file
)

document = load_document("path/to/my.pdf")

# A container holds derived data for a document, like OCR or classification results
document_node = DocumentNode.from_document(document)

provider.process_document_node(document_node) # Caches results on the document_node

# With OCR results available, we can now instantiate a locator and search through documents.

document_node.locator.search("John Doe") # This will return a list of all terms across the document that contain "John Doe"
document_node.locator.search("Jane Doe", page_number=4) # Just return results a list of matching results from page 4

This functionality uses a combination of rtree and the Rust library tantivy, allowing you to perform thousands of searches in seconds :fire: :rocket: