TSV to Parquet Converter
Handle Million Rows in Your Browser

Convert TSV files to Apache Parquet format instantly in your browser. Handles million-row files with zero upload.

Drag & drop your file here, or browse

Accepts: .tsv (up to 500 MB)

Your data stays in your browser. By using this tool, you agree to our Terms and Privacy Policy.

How to Convert TSV to Parquet

Drag and drop your TSV file onto the drop zone, or click to browse and select a file. You can also paste tab-separated data directly.

Conversion starts automatically and a preview is displayed.

Click the "Download Parquet" button to save the converted result.

Key Features

100% Local Processing: Your files are never uploaded to a server. All conversion happens in your browser using WebAssembly, so your sensitive data stays private.
3-10x Smaller Output: Parquet uses columnar storage and Snappy compression, producing files 3-10x smaller than the original TSV.
Paste from Excel: Copy cells from Excel or Google Sheets and paste directly. The clipboard data is tab-separated, so this tool handles it natively.

TSV vs Parquet: Key Differences

TSV (Tab-Separated Values) is a human-readable text format, while Apache Parquet is a binary columnar format optimized for analytics.

Feature	TSV	Parquet
Format	Text (human-readable)	Binary (columnar)
Compression	None	Snappy, ZSTD, Gzip
Query Speed	Requires full scan	Column pruning, predicate pushdown
File Size	Large	3-10x smaller

Benefits of Converting TSV to Parquet

Parquet files are 3-10x smaller than TSV, saving storage and bandwidth.
Parquet is the standard format for big data tools like Spark, BigQuery, and DuckDB.
Columnar format enables fast analytical queries without scanning entire files.

Frequently Asked Questions

How do I use this tool?

Simply drag and drop your CSV file onto the drop zone at the top of the page, or click to browse and select a file. Conversion starts automatically, and you can download the JSON file once it's complete.

Can this tool handle large files?

Yes. This tool uses DuckDB-WASM to process files entirely in your browser using WebAssembly. It can handle large files depending on your device's available memory.

Is my data uploaded to a server?

No. Your file never leaves your browser. All processing happens locally using WebAssembly. No data is sent to any server.

What browsers are supported?

Any modern browser that supports WebAssembly: Chrome, Firefox, Edge, Safari (14+). Chrome is recommended for best performance with large files.

Is it free?

Yes, this tool is completely free with no row limits.