What this does

Turns a JSON array of objects into a GitHub-flavored Markdown table that you can paste into a README, pull request, issue, or wiki. The keys become the header row and each object becomes a row.

Example

Input

[
  {
    "id": 1,
    "name": "Ada",
    "city": "London",
    "score": 9.5
  },
  {
    "id": 2,
    "name": "Grace",
    "city": "New York",
    "score": 8
  }
]

Output with default options

|  id | name  | city     | score |
| --: | ----- | -------- | ----: |
|   1 | Ada   | London   |   9.5 |
|   2 | Grace | New York |     8 |

Behavior

Columns are the union of keys across all objects, in first-seen order; missing values are left blank.
Pipe characters in values are escaped as \| and line breaks become <br>, so a cell never breaks the table.
Align columns with padding pads cells so the raw Markdown is readable too (width is counted in characters, so wide CJK text or emoji may look uneven in a monospace editor but renders correctly).
Right-align numeric columns uses --: in the separator row for columns where every non-empty value is a JSON number.
Nested objects and arrays are flattened into columns like address.city, or kept as JSON text in one cell.
Arrays of arrays and arrays of plain values are supported; mixed arrays and scalars are reported as errors.

Privacy

The conversion runs in your browser. The JSON is never uploaded.

JSON to Markdown Table Converter