Source: https://databento.com/docs/api-historical/basics/compression



### Compression

Databento provides options for compressing files from our API.
Available compression formats depend on the [encoding](https://databento.com/docs/api-historical/basics/encodings.md) you select.

**Zstd**

The `Zstd` compression option uses the [Zstandard](http://facebook.github.io/zstd/) format.

This option is available for all encodings, and is recommended for faster transfer speeds and smaller files.

You can read Zstandard files in Python using the [zstandard package](https://pypi.org/project/zstandard/).

Read more about [working with Zstandard-compressed files](https://databento.com/docs/conventions/working-with-zstandard.md).

**None**

The `None` compression option disables compression entirely, resulting
in significantly larger files.
However, this can be useful for loading small CSV files directly into Excel.