Does any data upload?

No. Everything runs locally in your browser for privacy.

Can it handle nested fields?

Yes. Use dot paths like user.name or name.text; arrays along the way are flattened.

Extract Fields from JSON Online

Choose your items array and pick dot paths like title or userId. Preview values per item and export CSV. Runs locally for privacy.

Open sample in the app Open blank app

Quick start

Paste JSON or drop a .json file.
Choose the items array (your “rows”).
Add dot paths like title, userId, id.
Copy or download CSV.

Sample JSON

{
  "posts": [
    { "userId": 1, "id": 1, "title": "Example Title A", "body": "Lorem ipsum..." },
    { "userId": 1, "id": 2, "title": "Example Title B", "body": "Dolor sit amet..." }
  ]
}

Fields to try: title, userId, id. Items array: posts.

Open this JSON in the app

Fetch real data with cURL

curl -s https://jsonplaceholder.typicode.com/posts \
  -o posts.json
# Then drop posts.json into the app

No upload required; everything stays in your browser.

Why this is different

Field‑first: pick exact fields, not a blind JSON→CSV dump.
Private: all processing happens in your browser.
Nested arrays: are flattened along the path.

Also see: JSON Path Extractor