Convert JSON data to Tab-Separated Values (TSV) online
Convert JSON documents and API arrays into tab-delimited values (TSV) for seamless copy-pasting directly into spreadsheet cells.
🛡️ Your rows never leave your browser.
Why Onfyt: Processes json to tsv entirely in-browser with dedicated Web Workers so your rows never leave your machine.
Interactive Sample Data
| patient_id | full_name | clinic_name | status | admit_date |
|---|---|---|---|---|
| 501 | John Doe | Aga Khan Hospital | Discharged | 2026-03-01 |
| 502 | Mary Wambui | MP Shah Hospital | Admitted | 2026-03-04 |
| 503 | Samuel Otieno | Nairobi Hospital | In Review | 2026-03-05 |
| 504 | Lucy Chebet | Kenyatta National | Discharged | 2026-03-02 |
How this tool works
Converting JSON arrays into Tab-Separated Values (TSV) is an efficient technique for pasting web API responses, webhook payloads, and serverless database outputs directly into spreadsheet tools like Microsoft Excel, Google Sheets, or LibreOffice Calc. When pasting data into an open spreadsheet document, desktop operating systems treat tab characters as cell boundaries and newline characters as row boundaries.
Unlike CSV conversions where text values containing commas must be wrapped in double quotes, TSV allows you to paste addresses, descriptions, and numeric formatting directly without triggering unwanted column splits. Our JSON to TSV engine harvests keys across all array objects, builds a unified header row, flattens nested objects if desired, and sanitizes internal tab characters within cell values to prevent grid misalignment.
A primary technical requirement during JSON-to-TSV conversion is handling nested child hierarchies. When an API payload contains sub-objects (such as "clinic": {"name": "Aga Khan", "ward": "4B"}), our engine flattens keys into dot-delimited column names ("clinic.name", "clinic.ward"), producing a clean tabular layout. In addition, array properties are joined with spaces or semicolons, preventing nested structures from breaking tabular alignment.
All processing runs entirely on your local machine using client-side Web Workers. Your patient records, financial entries, and private data remain strictly within your local browser sandbox without exposing confidential records to external network vulnerabilities.
From a technical implementation standpoint, converting JSON arrays to Tab-Separated Values requires sophisticated key discovery and cell sanitization. Because JSON objects within an array may possess differing attributes, our parser executes a discovery pass across all records to establish a complete union of unique keys. When values contain literal tab characters ( ) or carriage returns, our engine sanitizes them into clean spaces or semicolon separators, preventing column drifting when the resulting TSV is pasted into spreadsheet applications like Microsoft Excel or Google Sheets.
From a data confidentiality perspective, in-browser conversion is indispensable when working with sensitive API payloads or internal company records. Uploading proprietary customer profiles, financial transaction logs, or medical records to remote online tools creates substantial compliance liabilities. With DataFix, all JSON parsing and TSV generation executes entirely within your browser's local memory via Web Workers, ensuring complete confidentiality, zero latency, and reliable offline capabilities.
Things that usually go wrong
- Tabs in JSON Strings: If JSON string properties contain literal tab characters, columns will shift. DataFix automatically converts internal tabs to spaces.
- Deeply Nested Structures: Nested arrays of objects cannot be rendered in a single flat cell. Choose flattening or stringify nested arrays.
- Missing Object Keys: If some objects lack keys present in others, DataFix inserts empty tabs so alignment remains intact.
Edge cases we tested
🧪 Empty cells or missing values
Safely handled without schema corruption.
🧪 Leading or trailing cell whitespace
Sanitized prior to processing.
🧪 Large files with 25,000+ rows
Streamed via client-side Web Worker without tab freezing.
Frequently Asked Questions
Can I copy this output straight into Excel?
Yes! TSV is the clipboard format used by Excel and Sheets; pressing Ctrl+V pastes it perfectly into rows and columns.
How does it handle nested properties?
Nested keys can be flattened into dot-separated headers (e.g. user.address.city) for clean tabular viewing.
Is there any data sent over the network?
No. The conversion executes entirely inside your browser via local Web Workers.
Does it support single JSON objects?
Yes. A single object will be converted into a two-column key-value TSV table.
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