Online Parquet Editor & Viewer

Select Parquet File

Initializing ...

Features

Parquet Editor is a comprehensive, browser-based tool for working with Apache Parquet files. It is engineered to be fast, secure, and user-friendly, enabling data professionals to accomplish common tasks without installing additional software.

Privacy-First Processing

All processing happens inside your browser via WebAssembly. Your files are never uploaded to a server. This ensures complete control over your data, making the tool suitable for sensitive or proprietary datasets.

Schema Editing

Modify column names, data types, and nullability. The interface is designed to help you edit schemas with confidence while validating changes to avoid common errors.

Data Manipulation

Add, edit, and delete rows with immediate feedback. Use filters and sorting to focus on the rows you need. When ready, download an updated Parquet file to continue your workflow elsewhere.

Performance & Large Files

Built on DB running in WebAssembly, Parquet Editor efficiently handles large datasets directly in your browser, reducing latency and the need for infrastructure.

No Sign-up, No Tracking

Use the tool without creating an account. We focus on a clean, productive experience with minimal friction.

About Parquet Editor

A Comprehensive Online Parquet Tool

Our Parquet Editor & Viewer is a powerful online tool designed for developers, data scientists, and analysts. Whether you need to quickly view a parquet file online, read parquet data without installing any software, or perform detailed edits, we've got you covered. You can edit parquet files, modify schemas, add or delete rows, and then download your changes. It's also a parquet creator; you can build a new file from scratch.

This tool is perfect for anyone looking for a free parquet editor or online parquet viewer. It supports the Apache Parquet format and is built with privacy in mind - your files are never uploaded to a server. Get started now to open parquet files online and streamline your data analysis workflow.

Privacy-First Design

Parquet Editor is built with privacy as a core principle. All file processing happens entirely within your browser using WebAssembly technology. This means your data never leaves your device - there are no server uploads, no data transmission, and no external storage. Your sensitive data remains completely private and secure on your local machine.

Powerful Browser-Based Processing

Parquet Editor brings enterprise-grade data processing capabilities directly to your browser. You can view, edit, create, and manipulate Apache Parquet files without installing any software or relying on external services. The tool supports complex data types, schema modifications, and efficient handling of large datasets.

Key Features

Complete Privacy: No data uploads or server processing
Schema Editing: Modify column types, names, and nullable properties
Data Manipulation: Add, edit, and delete rows with real-time validation
File Export: Download your modified data as standard Parquet files
Type Safety: Built-in support for various data types including timestamps, numbers, and strings
Performance: Efficient handling of large datasets using WebAssembly

About the Developer

Parquet Editor is maintained by Abhishek Kumar , a passionate developer focused on creating tools that prioritize user privacy and data security. The goal is to democratize data processing by making powerful tools accessible directly in the browser without compromising on privacy or security.

Community

We believe in the power of community-driven development. Your feedback, feature requests, and contributions help make Parquet Editor better for everyone. Whether you're a data analyst, developer, or researcher, your input is valuable in shaping the future of this tool.

Documentation

What is Apache Parquet?

Apache Parquet is a columnar storage format optimized for analytics workloads. It provides efficient compression and encoding, enabling faster scans and lower storage costs compared to row-based formats. Parquet is widely used in data engineering and analytics stacks including Spark, Trino, Presto, Snowflake, BigQuery, and more.

Why use Parquet Editor?

Parquet Editor lets you open, inspect, and modify Parquet files directly in your browser. Powered by Embedded DB in your browser and WebAssembly, your files never leave your device, making it ideal for sensitive data.

Getting Started (Step-by-step)

Open the Home page.
Click Select Parquet File and choose a .parquet file.
Review the Schema tab, make changes if needed.
Switch to the Data tab to add, edit, or delete rows.
Click Download Parquet File to save your changes.

Tips & Best Practices

Keep schemas stable across files to simplify downstream processing.
Use appropriate types (e.g., timestamps vs strings) for better performance.
Validate data ranges and nullability before exporting.

FAQ

Are my files uploaded? No. All processing happens in your browser.
Max file size? Depends on your browser memory. Try splitting very large datasets.
Is it free? Yes, the tool is free to use.