100% Private
All conversion logic runs entirely in your browser using JavaScript. No data is ever sent to a server. Your files stay on your device.
Drag, drop, and download. Transform JSON data into clean Tab-Separated Values in seconds — nested objects flattened, headers auto-generated, bulk files supported.
Bulk conversion · Nested flattening · Real-time validation
JSON (JavaScript Object Notation) is the backbone of modern APIs and data interchange, but spreadsheet tools, analytics pipelines, and legacy databases often expect flat, tab-delimited text. Converting JSON to TSV bridges that gap — preserving all your key-value data while making it instantly readable in Excel, Google Sheets, SQL loaders, and command-line tools like awk and cut. Our browser-based converter handles deeply nested objects by flattening them with dot-notation keys, so even complex API responses become clean, queryable tables. Since everything runs locally in your browser, sensitive records — financial exports, user data, internal reports — never touch any external server.
Built for developers, data analysts, and power users who need reliable, private, and fast file conversion.
All conversion logic runs entirely in your browser using JavaScript. No data is ever sent to a server. Your files stay on your device.
Select dozens of JSON files at once. Each is independently converted and available for individual download or batch export.
Deeply nested objects are automatically flattened using dot-notation column headers (e.g. user.address.city).
As you select files, the tool instantly validates JSON syntax and reports malformed input before conversion even begins.
Output in true TSV (tab), CSV (comma), PSV (pipe), or semicolon format. Choose the separator your downstream tool expects.
Copy the output to clipboard or download each converted file as .tsv immediately — no waiting, no email, no account.
No sign-up, no installation, no waiting. Open the page and start converting.
Drag & drop one or more .json files onto the drop zone, or click to browse. The tool validates each file immediately.
Pick your delimiter, set flatten depth, choose array handling, and decide whether to include a header row.
Click Convert to TSV. Preview the output, copy to clipboard, or download the .tsv file instantly.
.json files in one go. Each file is converted independently and appears as a separate tab in the results area, with its own download button.address.city becomes a column header). Arrays can be joined, stringified, or expanded into multiple rows depending on your chosen option..tsv unless you rename it.Free forever. No sign-up. No data uploaded. Works on any device, any browser.