Drop your file here, or click to select
Supported:JSON
Privacy guaranteed. All conversion runs locally in your browser - your files never leave your device.
Convert JSON and CSV locally in your browser. No uploads, no cloud processing.
Drop your file here, or click to select
Privacy guaranteed. All conversion runs locally in your browser - your files never leave your device.
Convert JSON to CSV, CSV to JSON or tabular data to ODS directly in your browser. Paste data or choose a file and inspect the result before downloading it—without transmitting API responses, customer lists or datasets.
Parsing takes place in local JavaScript memory. Fluxed detects columns, escapes CSV values and formats structured JSON while keeping the source on your device. This is useful when transforming API payloads, spreadsheet exports or development fixtures that should not be copied to an online service. Review the preview to catch delimiter, header or nesting issues before saving the result. CSV is ideal for flat rows and spreadsheet imports; JSON preserves types and nested structures more naturally. If deeply nested JSON cannot map cleanly to a table, simplify or flatten the structure first. ODS export code is loaded only when selected, reducing the initial JavaScript needed for ordinary JSON and CSV work.
Traditional cloud converters upload a file to a remote system before processing it. Fluxed instead uses browser APIs, Web Workers and WebAssembly (WASM) inside the browser sandbox. Your operating system gives the page access only to files you explicitly select, and the conversion output is created locally. There is no account, analytics script or tracking cookie. After the required app assets have been cached, supported workflows can also run offline.
No. Pasted and selected data stays in the current browser session and is processed locally.
Yes. Header rows are used as JSON property names and generated correctly when converting JSON records to CSV.
Use CSV for flat tabular data and spreadsheet compatibility; use JSON when types or nested objects matter.