jmd - JSON to Markdown

Streaming JSON to Markdown converter using blockquote syntax.

Installation

pip install jmd

Usage

# Pipe JSON
cat data.json | jmd

# From file
jmd data.json

# JSONL
cat records.jsonl | jmd

# With head (streaming)
cat huge.json | jmd | head -20

# With key filtering
jq '.items[]' data.json | jmd

# Output to HTML, for viewing in browser
jmd data.json --html > data.html
chromium data.html

Examples

Example 1

Initial JSON

[{"role": "user", "content": "Can you write a python function to add two numbers?"},
{"role": "assistant", "content": "Sure! Here it is:\n\n```python\ndef add(a, b):\n    return a + b```\n"},
{"role": "user", "content": "Thanks! And some Latex?"},
{"role": "assistant", "content": "Sure. Here is an equation: $a+b$\n\nAnd a display block:\n$$\n\\int_0^\\infty x^2 dx\n$$"}]

Rendered Markdown

role: user
content: Can you write a python function to add two numbers?

role: assistant
content:

Sure! Here it is:

def add(a, b):  
    return a + b```  
  

role: user
content: Thanks! And some Latex?

role: assistant
content:

Sure. Here is an equation: $a+b$

And a display block:
$$
\int_0^\infty x^2 dx
$$

Converted Markdown

> > role: user  
> > content: Can you write a python function to add two numbers?  
>  
> > role: assistant  
> > content:  
> > > Sure! Here it is:  
> > >   
> > > ```python  
> > > def add(a, b):  
> > >     return a + b```  
> > >   
>  
> > role: user  
> > content: Thanks! And some Latex?  
>  
> > role: assistant  
> > content:  
> > > Sure. Here is an equation: $a+b$  
> > >   
> > > And a display block:  
> > > $$  
> > > \int_0^\infty x^2 dx  
> > > $$  

Example 2

Initial JSON

{"name": "Gilbert", "wins": [["straight\nwin", "7♣"], {"Test": ["8"]}]}

Rendered Markdown

name: Gilbert

wins:

straight
win

7♣

Test:

8

Converted Markdown

> name: Gilbert  
> # wins:  
> > > > straight  
> > > > win  
>  
> > > 7♣  
>  
> > > # Test:  
> > > > > 8  

Python API

from jmd import to_markdown, to_markdown_from_str, stream_json_to_md

# From Python object
md = to_markdown({"name": "Alice", "items": [1, 2, 3]})

# From JSON string
md = to_markdown_from_str('{"key": "value"}')

# Streaming from file
with open("data.json") as f:
    for line in stream_json_to_md(f):
        print(line)

Format

Unstable, subject to change.

Features

• Streaming: O(chunk + max_string + depth) memory
• C-accelerated: Uses json.decoder.scanstring
• JSONL support: Multiple JSON values
• Pipe-friendly: Handles | head gracefully