docling-project/docling

When converting a docx document, inexplicable blank images appear, and a line of text disappears.

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#3315 opened on Apr 16, 2026

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Description

Bug

When converting a docx document, inexplicable blank images appear, and a line of text disappears.

Steps to reproduce

  1. download the zip from https://www.3gpp.org/ftp/tsg_ran/WG1_RL1/TSGR1_124b/Docs/R1-2601816.zip , unzip this zip file and then you can get
    a file named R1-2601816 Discussion on other aspects of CSI acquisition and report for 6GR.docx. download the zip from https://www.3gpp.org/ftp/tsg_ran/WG1_RL1/TSGR1_124b/Docs/R1-2601793.zip , unzip this zip file and then you can get
    a file named R1-2601793.docx.
  2. use docling to convert the docx to markdown file
            cmd = [
                "docling",
                "--from", "docx",
                "--to", "md",
                "--output", os.path.dirname(md_path),
                doc_path
            ]

            print(f"run command: {' '.join(cmd)}")
            result = subprocess.run(
                cmd,
                capture_output=True,
                text=True,
                check=True
            )
  1. I get the markdown, I have obtained the markdown file and carefully compared the contents of the docx file and the markdown file (I use typora to read markdown file).
  2. I found the error. The details are as follows:

"Agenda Item : 10.5.3.3" disappear "3GPP TSG RAN WG1 Meeting #124bis R1-2601793" dosappear inexplicable blank images appear

Docling version

Docling version: 2.88.0 Docling Core version: 2.72.0 Docling IBM Models version: 3.13.0 Docling Parse version: 5.8.0 Python: cpython-312 (3.12.12) Platform: Linux-6.8.0-90-generic-x86_64-with-glibc2.39

Python version

Python 3.12.12

Contributor guide

Tech stack
python
Domain
backendcli
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
Pythonbasic understanding of document parsing
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
40
Research direction
Investigate the docx conversion pipeline in docling, focusing on image extraction and text rendering. Look at the `DocumentConverter` class and related modules to see how images from docx are handled. Check if there is a known issue with blank images or text loss. Consider examining the specific docx files to identify the cause of missing text and blank images. Also review any existing tests for docx conversion.