Convert a JSON array of objects into a CSV file — nested objects are flattened into dot-notation columns (e.g. user.name), and array-valued fields are serialized as JSON strings. All conversion happens in your browser.
Paste a JSON array of objects and Tabreon converts it to CSV instantly — nested fields flattened into columns, entirely in your browser.
Why use Tabreon for this?
Conversion runs client-side — your data, which may include exported records or user data, never leaves your browser.
Nested objects are automatically flattened into dot-notation columns instead of failing or dropping data.
Download the result directly as a CSV file, ready to open in a spreadsheet.
How to convert JSON to CSV
1Paste your JSON. Paste a JSON array of objects (or a single object) into the input panel.
2Click Convert to CSV. Column headers are derived from the union of all object keys, with nested keys flattened using dot notation.
3Copy or download. Copy the CSV text directly, or download it as a .csv file to open in a spreadsheet.
What is JSON to CSV conversion?
CSV (comma-separated values) is a flat, tabular text format that every spreadsheet application understands, while JSON supports arbitrarily nested structures. Converting JSON to CSV means flattening nested objects into named columns (e.g. a nested `user.name` field becomes a `user.name` column) so the data can be opened in Excel, Google Sheets, or any tool that expects tabular input.
How Tabreon handles your data
Parsing and flattening run entirely in your browser's JavaScript engine — the JSON you paste is never transmitted to a server.
Key features
Automatic dot-notation flattening for nested objects
Array-valued fields serialized as JSON strings so no data is silently dropped
Proper CSV quoting for values containing commas, quotes, or newlines
Direct CSV file download
Common use cases
Exporting an API response (array of user objects) as a CSV for a spreadsheet report
Converting a JSON product catalog into CSV for a bulk-import tool
Turning nested JSON log entries into a flat CSV for quick filtering in a spreadsheet
Common mistakes & limitations
Deeply nested or highly irregular structures (objects with wildly different shapes per row) can produce a very wide, sparse CSV.
Array-valued fields are stored as a single JSON-string cell rather than exploded into multiple rows or columns.
Frequently asked questions
No. Parsing and CSV conversion happen locally in your browser — your data is never transmitted to a server.
Nested object fields are flattened into dot-notation column names — for example, `{"user":{"name":"Alice"}}` becomes a column named `user.name`.
Yes. A single object is treated as a one-row CSV; an array of objects produces one row per object, with columns taken from the union of all objects' keys.