About JsonToCsvTool

JsonToCsvTool converts JSON to CSV, and it does the whole job inside your own browser.

Paste your JSON, upload a file, or load it from a URL. The conversion runs on your device — your data is not uploaded to any server.

Who runs this site

JsonToCsvTool is built and maintained by an independent developer. It is a small standalone utility, not part of a larger company or product suite.

What it supports

• Arrays of objects, single objects, and JSONLines / NDJSON input
• Nested objects, flattened into columns using dot notation
• Comma, semicolon, tab, pipe, or a custom delimiter
• Optional header row and forced quoting
• Copy the result, or download it as a .csv file

Last updated: September 2026