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AI · Flatten JSON

Flatten JSON Online

Collapse deeply-nested JSON into flat dot-notation key-value pairs, ready to map to spreadsheet columns or CSV.

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1,000 free AI credits on signup · Core tools run locally

Flatten JSON converts a nested structure into a single flat list of dot-notation keys and their values, for example user.address.city or orders[0].total. This makes deeply-nested data easy to map to spreadsheet columns, load into tools that expect flat input, or scan quickly. The AI Copilot flattens your data and keeps it linked to the editor so you can jump from any key to its source.

How to flatten JSON

  1. 1

    Paste your nested JSON

    Open the editor, sign in, and paste the nested JSON you want to flatten.

  2. 2

    Run Flatten in the AI Copilot

    Run the Flatten action to convert nesting into dot-notation key-value pairs.

  3. 3

    Copy the flat result

    View the flattened pairs or the flat JSON, then copy it, ready for a spreadsheet or CSV.

Why flatten with JSON Copilot

Dot-notation keys

Nested paths become readable keys like user.address.city.

Array-aware

Array items are indexed (e.g. orders[0].id) so nothing is lost.

Spreadsheet-ready

Flat key-value output maps cleanly to columns or CSV.

Linked to the editor

Click any flattened key to jump to its source in the JSON.

Frequently asked questions

What does flattening JSON mean?

It converts nested objects and arrays into a single level of dot-notation keys (e.g. user.address.city) paired with their values, easier to map to columns or scan.

How are arrays handled?

Array elements are flattened with their index, like orders[0].total and orders[1].total, so the full structure is preserved in flat form.

Does flattening use credits?

Yes, it is an AI action. New accounts get 1,000 free credits and see a cost estimate before running.

Related tools

JSON to Documentation JSON Formatter Explain JSON

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