Free Online JSON to HTML Table

1. Paste a JSON array of objects into the input box.
2. The preview table appears immediately, with keys as columns.
3. Review nested values, which are shown as compact JSON inside their cell.
4. Copy the generated HTML table markup from the output box.
5. Embed the markup in your page or report and style it with CSS.

A JSON array of objects — the shape most REST APIs return for a list — maps naturally onto a table: each object is a row, each key is a column. This tool collects the union of keys across every object so that records with different fields still line up, filling missing values with blanks. The result is rendered both as a live preview and as copy-ready HTML markup.

Nested objects and arrays inside a cell cannot become sub-tables in a flat grid, so they are serialized to compact JSON and shown as text. That keeps every value visible without losing data, and it makes the table a useful debugging view for API responses. Scalar values — strings, numbers, booleans, null — are shown directly.

The generated markup uses thead and tbody with escaped cell content, so it is safe to embed in a page. Use it to turn an API payload into a readable table for a report, a quick admin view, or documentation. Everything is parsed and rendered in your browser; the JSON you paste never leaves the page.