What is JSON to Markdown Table?
JSON to Markdown Table conversion transforms structured JSON data (arrays of objects or single objects) into Markdown table syntax. This is useful for embedding tabular data in README files, documentation, GitHub issues, and any Markdown-based content. The tool handles nested objects by JSON-stringifying them in cells and arrays by joining their values with commas.
How to Use
- Paste your JSON array or object into the input area
- Configure options: column alignment, header style (with/without leading pipe), and how to display null values
- Click 'Convert' to generate the Markdown table
- Copy the output or toggle 'Show Preview' to see the rendered table
Why Use This Tool?
Tips & Best Practices
- Use the 'Without leading pipe' style for compatibility with some Markdown parsers that don't require leading pipes
- Nested objects are serialized as JSON strings in cells — consider flattening your JSON first if you want nested fields as separate columns
- Null values can be shown as 'null' or as empty cells depending on your documentation style preference
Frequently Asked Questions
What JSON formats are supported?
The tool accepts JSON arrays of objects (e.g., [{...}, {...}]) or a single JSON object (e.g., {...}). A single object is treated as a one-row table. All keys across objects are collected to form the columns, and missing keys result in empty cells.
How are nested objects and arrays handled?
Nested objects are converted to their JSON string representation (e.g., {"department": "Finance"} becomes '{"department":"Finance"}' in the cell). Arrays are joined with commas (e.g., ["React", "Node.js"] becomes 'React, Node.js'). For more control, flatten your JSON before converting.
What is the 'leading pipe' option?
Markdown tables can optionally start each row with a pipe character (|). The 'With leading pipe' style produces | Col1 | Col2 |, while 'Without leading pipe' produces Col1 | Col2. Both are valid Markdown, but some parsers prefer one over the other.
Is my data sent to a server?
No. All processing happens entirely in your browser. Your JSON data is never transmitted to any server. This tool works offline and keeps your data completely private.
Can I customize column alignment?
Yes. You can choose left, center, or right alignment for all columns. This affects the separator row in the Markdown table: :--- for left, :---: for center, and ---: for right. Per-column alignment is not currently supported.