sn2md is a command-line tool to convert Supernote .note files into markdown. It leverages OpenAI GPT-4o to convert images and text from Supernote files into a structured markdown document.

Sample output: 20240712_151149.md

• Converts Supernote .note files to markdown.
• Supports conversion of images to markdown using the Mermaid diagramming tool.
• Automatically handles math equations using $ and $$ style math blocks.
• Generates a markdown file and embedded images (custom output supported).

pip install sn2md

Setup your OPENAI_API_KEY environment variable.

To import a single Supernote .note file, use the file command:

# import one .note file:
sn2md file <path_to_note_file>

# import a directory of .note files:
sn2md directory <path_to_directory>

Notes:

• A cache file is also generated, so repeated runs don't recreate the same data. You can force a refresh by running with the --force flag.

A configuration file can be used to override the program defaults. The default location is platform specific (eg, ~/Library/Application Support/sn2md.toml on OSX, ~/.config/sn2md.toml on Linux, etc).

Values that you can override:

• template: The output template to generate markdown.
• prompt: The prompt sent to the OpenAI API. Requires a {context} placeholder to help the AI understand the context of the previous page.
• title_prompt: The prompt sent to the OpenAI API to decode any titles (H1-H4 highlights).
• model: The OpenAI model to use (default: gpt-4o-mini).
• openai_api_key: Your OpenAI API key (defaults to your $OPENAI_API_KEY environmental variable setting).

Example instructing the AI to convert text to pirate speak:

prompt = """###
Context (what the last couple lines of the previous page were converted to markdown):
{context}
###
Convert the following image to markdown:
- Don't convert diagrams or images. Just output "<IMAGE>" on a newline.
"""

template = """
# Pirate Speak
{{markdown}}
"""

The default prompt sent to the OpenAI API is:

###
Context (what the last couple lines of the previous page were converted to markdown):
{context}
###
Convert the following image to markdown:
- If a diagram or image appears on the page, and is a simple diagram that the mermaid diagramming tool can achieve, create a mermaid codeblock of it.
- When it is unclear what an image is, don't output anything for it.
- Assume text is not in a codeblock. Do not wrap any text in codeblocks.
- Use $$, $ style math blocks for math equations.

This can be overridden in the configuration file.

You can provide your own jinja template, if you prefer to customize the markdown output. The default template is:

---
created: {{year_month_day}}
tags: supernote
---

{{markdown}}

# Images
{% for image in images %}
- ![{{ image.name }}]({{image.name}})
{%- endfor %}

# Keywords
{% for keyword in keywords %}
- Page {{ keyword.page_number }}: {{ keyword.content }}
{%- endfor %}

# Links
{% for link in links %}
- Page {{ link.page_number }}: {{ link.type }} {{ link.inout }} {{ link.name }}
{%- endfor %}

# Titles
{% for title in titles %}
- Page {{ title.page_number }}: Level {{ title.level }} "{{ title.content }}"
{%- endfor %}

Variables supplied to the template:

• year_month_day: The date the note was created (eg, 2024-05-12).
• markdown: The markdown content of the note.
• images: an array of image objects with the following properties:
  • name: The name of the image file.
  • rel_path: The relative path to the image file to where the file was run from.
  • abs_path: The absolute path to the image file.
• links: an array of links in or out of the note with the following properties:
  • page_number: The page number the link is on.
  • type: The link type (page, file, web)
  • name: The basename of the link (url, page, web)
  • device_path: The full path of the link
  • inout: The direction of the link (in, out)
• keywords: an array of keywords with the following properties:
  • page_number: The page number the keyword is on.
  • content: The content of the keyword.
• titles: an array of titles with the following properties:
  • page_number: The page number the title is on.
  • level: The level of the title (1-4).
  • content: The content of the title. If the area of the title appears to be text, the text, otherwise a description of it.

Contributions are welcome. Please open an issue or submit a pull request.

git clone https://github.com/yourusername/supernote-importer.git
cd supernote-importer
poetry install

This project is licensed under the AGPL License. See the LICENSE file for details.

• Supernote for their amazing note-taking devices.
• supernote-tool library for .note file parsing.