JSON to Markdown

JSON is the interchange format of APIs and programs, but anyone wanting to show data in a README, a wiki, a pull request or a note needs a table that can be read. GitHub-style Markdown tables do exactly that. This tool takes your JSON array of objects and writes a clean pipe table you can paste straight in.

The conversion runs entirely locally in your browser, in pure JavaScript. The columns are the union of all object keys, so records with differing fields are still represented in full; each entry of the array becomes a table row. Pipe characters inside a value are escaped and line breaks within a cell are flattened so the table stays valid. An object that wraps an array is also recognised.

Honest about the limits: a nested object or array in a cell is shown as compact JSON, not fanned out into further columns - flat records make the nicest table. An array of plain values without keys gets a neutral header of A, B, C and so on, because a Markdown table needs a header row. Nothing is uploaded.

Specifications

In 3 steps

1. Drop or pick your JSON file.
2. The tool builds a Markdown table.
3. Download the Markdown file.

Limitations: Expects a JSON array of objects (or an object wrapping such an array). The columns are the union of all keys, each entry becomes a table row. Pipe characters are escaped, line breaks within cells are flattened. Every cell is output as plain text - a Markdown table has no data types, so numbers and text look identical. Nested objects or arrays in a cell appear as compact JSON. An array of plain values gets a neutral A/B/C header.

FAQ

Related tools

CSV to Markdown · JSON to CSV · Excel to Markdown · Markdown to HTML · YAML to XML · JSONL to JSON