JSON → Markdown Table
Convert a JSON array (of objects or arrays, or a wrapped payload) into a GitHub-flavoured Markdown table — a union of keys as columns, dot-path flattening of nested objects, per-column left / center / right alignment, pretty column padding, pipe and newline escaping, and column pick / reorder / rename — with a rendered preview and Markdown output, plus an HTML table or CSV.
What this tool does
It reads a JSON array and produces a Markdown pipe table, showing both the rendered result and the raw Markdown.
Input shapes
An array of objects, an array of arrays, or an object whose first array property is the data. Columns are the union of every key seen.
Nested data
Nested objects flatten to dot-path columns
(meta.author) up to the depth you set; deeper values and
arrays become compact JSON in the cell.
Alignment
Set each column to left, center or right and the separator row
gets the matching :---, :---: or
---:. Numeric columns default to right.
Pretty padding
Optionally pad every cell to its column's width so the raw Markdown lines up in a monospace editor — GitHub renders both forms identically.
Escaping
Pipes in values are escaped as \| and newlines become
spaces (or <br>) so the table never breaks.
Privacy
Everything runs in your browser. Nothing is uploaded.
Frequently asked questions
How do I right-align a column?
What is pretty padding?
How are line breaks in values handled?
to keep them as visible line breaks inside the cell (GitHub supports
in table cells).