Flatten a JSON array of objects into a clean CSV — delimiter and header options, values safely quoted — on your device.
A .csv or .json file — or paste below · converted on your device, nothing uploaded
No size limit · files are processed on your device and never uploaded · how it works
JSON in
CSV out
Runs in your browser. Files are never uploaded — you can go offline after the page loads.
How to use the JSON to CSV
Paste a JSON array of objects, or drop a .json file.
Pick the delimiter and header option.
Copy the CSV or download it — opens in Excel or Sheets.
Easy to use
Drop files, pick options, download. Whole folders at once, no signup, no daily limit.
Best quality
The same engines the professionals use — SVGO, resvg, MozJPEG, libwebp, libavif — compiled to run in your browser.
Private & secure
Files are processed on your device and never uploaded. Close the tab and nothing remains anywhere.
JSON into a spreadsheet-ready CSV
Take an API response or a JSON export and flatten it into CSV: every object becomes a row, the keys become the header,
and columns are unioned across all objects so nothing is lost. Fields containing commas, quotes or newlines are
automatically quoted so the file stays valid.
Pick comma (or semicolon for many European locales) and the CSV opens straight in Excel, Google Sheets or Numbers.
The reverse — CSV to JSON — is one click, and it all runs in your browser.
Frequently asked questions
What JSON shape does it expect?
An array of objects (the usual API/export shape). Keys across all objects are unioned into the header, and missing keys become empty cells. A single object is treated as a one-row table.
Will it open in Excel/Sheets?
Yes — pick the comma (or semicolon for many European locales) delimiter and the CSV opens directly in Excel, Google Sheets or Numbers.
Most online converters upload your file to a server. InfyTool ships the actual encoders to your browser as WebAssembly instead, so processing happens inside your tab — faster for batches, and nothing to delete afterwards.
No upload, ever. Turn off Wi-Fi after the page loads and every tool keeps working.
No limits. No file-size cap, no queue, no watermark, no account.
Runs on your CPU. Batches use several cores in parallel; nothing is throttled.