Convert to Parquet Online

Convert CSV, TSV, JSON, and JSONL files to Apache Parquet format directly in your browser. Choose your compression codec. No upload — your data never leaves your machine.

Convert to Parquet Create Parquet Edit Parquet Schema Diff File Diff

Why Convert to Parquet?

Smaller File Size

Parquet's columnar compression typically reduces file size by 60-90% compared to CSV.

Faster Queries

Columnar format means tools like DuckDB, Spark, and Pandas can read only the columns they need.

Type Preservation

Unlike CSV, Parquet preserves data types (integers, dates, decimals) — no more type inference issues.

Supported Formats

CSV — Comma-separated values with automatic header detection
TSV — Tab-separated values
JSON — Standard JSON arrays or objects
JSONL — Newline-delimited JSON (one object per line)

Compression Options

Snappy — Fast compression/decompression, good balance (default)
Zstd — Best compression ratio with good speed
Gzip — Widely compatible, higher compression than Snappy