Solving Error 43: Step-by-Step Guide to Fix Pandoc Document Conversion Failed Issue

Pandoc is a powerful document conversion tool that allows users to convert files from one markup format to another. However, users sometimes encounter error messages like "Error 43: Pandoc document conversion failed" during conversion. This guide will help you troubleshoot and resolve this issue step by step.

Table of Contents


Before diving into the solution, make sure you have the following:

Understanding Error 43

Error 43 occurs when Pandoc fails to convert a document due to various reasons, such as improper installation, outdated Pandoc version, unsupported input/output formats, issues with Pandoc filters, or problems within the document itself. We will address each of these possibilities in the steps below.

Step 1: Check for Proper Installation

First, ensure that Pandoc is correctly installed on your system. Open the terminal or command prompt and run the following command:

pandoc --version

If Pandoc is installed correctly, you should see the version number along with other details. If not, install Pandoc and retry the command.

Step 2: Update Pandoc to the Latest Version

An outdated Pandoc version may cause conversion errors. To update Pandoc, follow the installation instructions for your operating system, or use package managers like brew, choco, or apt-get.

For example, on macOS, you can use the following command to update Pandoc:

brew upgrade pandoc

After updating, check the version number again with pandoc --version to ensure that the update was successful.

Step 3: Verify Input and Output Formats

Ensure that the input and output formats you are using are supported by Pandoc. You can find a list of supported formats in the Pandoc User's Guide.

For example, if you want to convert a Markdown file to a PDF, the command should look like this:

pandoc -s -o output.pdf

If you are unsure about the input format, you can use the --from option with the markdown format as a general starting point:

pandoc --from markdown -s -o output.pdf

Step 4: Troubleshoot Pandoc Filters

If you use any Pandoc filters during the conversion, ensure that they are installed correctly and functioning as intended. You can test this by temporarily disabling the filters and attempting the conversion without them.

For example, if you use the pandoc-citeproc filter, you can disable it by removing the --filter pandoc-citeproc option from your command:

pandoc -s -o output.pdf

If the conversion succeeds without the filter, you may need to reinstall or update the filter to resolve the issue.

Step 5: Inspect the Document

If none of the previous steps resolve the issue, there may be a problem within the document itself. Carefully review the document for any syntax errors, unsupported elements, or other issues that may cause Pandoc to fail during conversion.

If you still cannot identify the issue, consider breaking the document into smaller sections and converting each section individually to isolate the problematic area.


1. What is Pandoc?

Pandoc is a universal document converter that allows users to convert files from one markup format to another. It supports a wide range of formats, including Markdown, HTML, LaTeX, and Microsoft Word.

2. How do I install Pandoc?

You can find installation instructions for various operating systems on the Pandoc installation page.

3. What formats does Pandoc support?

Pandoc supports a wide range of input and output formats. A detailed list can be found in the Pandoc User's Guide.

4. Can I convert multiple files at once with Pandoc?

Yes, you can convert multiple files at once by specifying them as input files in the command. For example:

pandoc -s -o output.pdf

This command will merge and into a single PDF file.

5. How can I customize the appearance of my output document?

You can customize the appearance of your output document using options like --template, --css, or by customizing the LaTeX template for PDF output. More information can be found in the Pandoc User's Guide.

Great! You’ve successfully signed up.

Welcome back! You've successfully signed in.

You've successfully subscribed to

Success! Check your email for magic link to sign-in.

Success! Your billing info has been updated.

Your billing was not updated.