JSONL to CSV

Convert JSON Lines files to CSV. Nested objects are flattened automatically. The safest way to process sensitive data with ze

Your files never leave your device. Processed locally. 100% private.

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How To Use JSONL to CSV

Complete your task perfectly in just three straightforward steps.

Upload your .jsonl or .ndjson file.

Detected column names and 5 sample rows are shown.

Download the CSV with nested objects flattened.

Everything you need to know about the JSONL to CSV.

What is JSONL?

A format where each line of a text file is a complete JSON object.

How are nested objects handled?

They are flattened using dot notation, e.g. user.name.

What happens to arrays?

Arrays are serialised as JSON strings in their column.

What if some lines are invalid?

Invalid lines are skipped and counted in the result stats.

Is my file uploaded?

No. Everything runs locally in your browser.

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