PDF Accessibility Docling

Uses Docling-Layout for layout recognition, running fully offline. For PDF output without watermarks, a PDFix SDK license is required.

Table of Contents

• PDF Accessibility Docling
  • Getting started
  • Usage
  • Commands
  • Arguments
  • Examples
  • Model
  • Help & support
  • Licenses

Getting started

You need Docker installed. The first run downloads the image and may take longer than later runs.

Usage

Mount a folder into the container and run a subcommand:

docker run --rm -v "$(pwd)":/data -w /data pdfix/pdf-accessibility-docling:latest <command> [options]

Commands

• tag: Autotag a PDF (PDF → PDF)
• template: Create a PDFix layout template JSON (PDF → JSON)

Arguments

Common (tag and template)

Option	Required	Type / expected value	Description
--input, -i	yes	Path to an existing .pdf file	Input PDF
--output, -o	yes	Path for .pdf (tag) or .json (template)	Output file
--name	no	String (PDFix account license name)	PDFix license name
--key	no	String (PDFix account license key)	PDFix license key
--do_image_description	no	Boolean string: true/false, yes/no, 1/0 (default: false)	Alt text for Figure tags
--do_formula_recognition	no	Boolean string (default: false)	Formula recognition
--per_page	no	Boolean string (default: false)	Process page by page
--bbox_overlap	no	Float (default 0.6)	Docling bbox overlap threshold

Examples

Tag a PDF:

docker run --rm -v "$(pwd)":/data -w /data pdfix/pdf-accessibility-docling:latest \
  tag --name "${LICENSE_NAME}" --key "${LICENSE_KEY}" \
  -i /data/input.pdf -o /data/output.pdf \
  --do_image_description true --do_formula_recognition true --per_page true

Create a layout template JSON:

docker run --rm -v "$(pwd)":/data -w /data pdfix/pdf-accessibility-docling:latest \
  template --name "${LICENSE_NAME}" --key "${LICENSE_KEY}" \
  -i /data/input.pdf -o /data/output.json

Model

The image includes the Docling-Layout model and runs fully offline (CPU).

Help & support

For PDFix SDK licensing or issues, contact support@pdfix.net.

Licenses

• PDFix Terms
• Docling — MIT License