For analysts and BI teams
Explore schemas fast, filter data with SQL, and export to CSV/JSON/Parquet for reporting.
Parquet Reader — Parquet Viewer Online
View Parquet files online. Search, sort, run SQL queries, and export to CSV/JSON/Parquet.
View your full file for free · Exports via upgrade · No account required
A secure online parquet viewer and parquet file reader for Parquet, Avro, Feather, ORC, CSV, GeoJSON, NetCDF, JSON, Excel, Arrow & Vortex formats.
Free to view, Private & Secure 8,000+ monthly users SQL on your files Data quality report
ParquetAvroFeatherORCCSVGeoJSONNetCDFJSONExcelArrowVortex
How to Open a Parquet File Online
- Upload a Parquet file (or 'try with sample file').
- Inspect the schema, search & sort columns, run SQL queries, and check data quality.
- Export the full file or SQL results to CSV/JSON/Parquet.
Why Teams Use This Parquet File Viewer
For developers and data engineers
Validate Parquet files, run quick SQL checks, and debug issues before production pipelines.
For data QA and validation
Spot null spikes, duplicates and invalid values with the free data quality report—then share it as PNG or JSON.
Frequently asked questions
How do I open a Parquet file online?
Upload your .parquet file in the viewer and your data is loaded in the viewer. Then filter rows, search values, and inspect columns instantly.
Can I convert Parquet to CSV or JSON?
Yes. After opening your file, export your result set to CSV or JSON. This helps when you need to share data with tools that do not support Parquet.
Is ParquetReader private and secure?
ParquetReader is built for privacy-first workflows. You can inspect files quickly without creating an account for basic usage.
Do I need to install software to read Parquet files?
No installation is required. You can open and analyze Parquet files directly in your browser from desktop or laptop.
Can I read a Parquet file online for free?
Yes. Opening and inspecting Parquet files online is free, and you can read the whole file — every row, the schema, search, sort and SQL. Upgrading adds exports to CSV, JSON or Parquet, saved files and sharing.
Can I check the data quality of a Parquet or CSV file?
Yes. Open your file and click Quality report for a free profile of every column: completeness, distinct values, min, max and distributions, plus checks for nulls, duplicates and invalid values. You can download the report as PNG or JSON.
Can I open a Parquet file without Python or Spark?
Yes. You can upload and read a Parquet file online without setting up Python, Spark, DuckDB, or desktop tools.
Is this Parquet file viewer secure?
Files are processed temporarily for your request and removed after processing. See the privacy policy for full details on file handling and retention.