Purpose-Built
A local Apache Parquet inspection studio for schemas, row groups, encodings, compression, page statistics, null patterns, predicates, and dataset comparisons.
One-time iPhone and iPad app
Parquetglass
Row groups and metadata
Core Features
- Read Parquet footer metadata and nested schemas
- Inventory row groups, columns, encodings, and codecs
- Inspect min/max/null statistics and byte ranges
- Estimate predicate pruning and scan amplification
- Compare schemas and physical layout across files
Private by Design
No account, subscription, ads, tracking, third-party analytics, or developer-operated backend. Core features work offline, and your work stays on device unless you deliberately share or export it.
Use It Responsibly
Inspection aid. Statistics may be absent or truncated and do not guarantee data quality; validate reads with the production query engine.