How it works
Add your Apache ORC file. MimiFile checks the format, converts it to Apache Parquet, and provides a temporary download when the result is ready.
Convert ORC to Parquet when a data lake, query engine or analytics workflow expects Parquet rather than ORC.
ORC → PARQUET
Drag and drop, paste a file, or browse your device.
Files are temporary and deleted automatically.
Limits: 50 MB per file · 128 MB total per batch.
Add your Apache ORC file. MimiFile checks the format, converts it to Apache Parquet, and provides a temporary download when the result is ready.
ORC and Parquet are both typed columnar formats, but their physical encodings and type mappings are not identical. Validate the destination schema before replacing the source in production.
Current source limit : 50 MB per file. Up to 10 files can be submitted in a batch, subject to the global batch ceiling.
The conversion is mainly about ecosystem compatibility: both formats target analytics, but individual engines and pipelines may standardize on Parquet.
Review decimals, timestamps, nullability, nested fields and binary columns. A successful file conversion does not guarantee identical application-level schema assumptions.
When a tabular destination cannot represent lists or objects directly, nested values are serialized as JSON text where supported instead of being silently discarded.
Nulls and timestamps are preserved when the destination supports them. Binary values can be represented as Base64 text in text-based or spreadsheet outputs.
Check column types, null values, timestamps and nested fields before using the converted file in a production data pipeline.