Parquet Fox

Open Parquet, CSV, and JSON

View, query, and edit Parquet, CSV, and JSON. SQL-powered. No account required.

Files stay in your browser. Nothing is uploaded to a server.

No file handy?

Drop your file here or click to upload

Parquet

CSV

JSON

Parquet up to 500 MB; CSV and JSON up to 2048 MB (compressed on disk). Browser memory use depends on content.

Continue Your Work

Edits aren't saved until you use Save to browser (or Save and leave). Opened originals can still show up here for reopen.

Once you open a file, it will be saved here for quick access.

How It Works

Three simple steps to start working with your data files

Drop a file, open a saved copy, or use Open from URL for a public or presigned HTTPS link. Everything stays local.

Use SQL to inspect, filter, and transform your data.

Download your modified data as Parquet, CSV, or JSON.

Built for data engineers, analysts, and backend developers who work with parquet files daily

Data Inspection

Instantly view schema, row counts, column types, and sample data without writing any SQL.

Debugging & Validation

Debug pipeline outputs, check compression ratios, and validate parquet metadata from Spark or Pandas.

Quick Edits

Run SQL queries to filter, transform, or join data, then export the results immediately.

Privacy First

No server uploads, no account required. Your files never leave your device — a hard requirement in finance, health, and legal environments.