Source: https://databento.com/docs/portal/batch-download


# Batch download

![Batch download overview](https://databento.com/docs/batch-download-0.png.md)

### Overview

After you've selected a product from a dataset, you can customize and submit your download request for flat files.
We support DBN, CSV, and JSON formats, allowing our data to be integrated with various platforms and database solutions.

> **Info**
>
> Within one request, you can download multiple products from the same dataset -- with no limit to
> the number of products. However, you can't download various products from different datasets
> within one request.

### Data selection

![Data selection](https://databento.com/docs/batch-download-1.png.md)

- **Schema.** Specify the schema you want to receive your data in -- MBO, MBP, TBBO, etc.
              You can read more about our supported schemas [here](https://databento.com/docs/schemas.md).  After you select a
              schema, we specify the usage rate ($/GB).
- **Time range.** You can specify your data time range. After you select a time range, we specify
                  the data usage amount.

### Basic customization

![Basic customization](https://databento.com/docs/batch-download-2.png.md)

Choose your preferred encoding, compression, and delivery method for no additional charge.

- **Encoding.** DBN has the fastest transfer speed and smallest size. CSV works best for
                spreadsheets and JSON for web applications. Learn more about how to read DBN
                files [here](https://databento.com/docs/conventions/databento-binary-encoding.md).
- **Compression.** Choose between zstd or no compression option. Learn more about how to
                   decompress zstd files [here](http://facebook.github.io/zstd/).
- **Delivery method.** Direct download (HTTP or FTP) is currently the only option available,
                       with S3 and disk coming soon.

### Advanced customization

![Advanced customization](https://databento.com/docs/batch-download-3.png.md)

Split your data into different files based on the following:

- **Duration.** Split data into one file per day, week, or month.
- **Size limit.** Split files above a size limit of 2, 4, or 10GB.
- **Instrument.** Split files by instrument.

The following are additional customizations available for CSV and JSON encodings:

- **Price format.** Scale prices to decimal strings.
- **Timestamp format.** Format timestamps as ISO 8601 strings.
- **Symbol field.** Add a symbol field to the data.

![Request Summary](https://databento.com/docs/batch-download-4.png.md)

After you've customized your download request details, submit the request by clicking the
**Submit request** button on the right side of the page.

We will queue and process your request, and the files will be ready for use on your Databento
portal's [Download center](https://databento.com/portal/download-center) page. You can read more about accessing and managing downloads
in our [Download center](https://databento.com/docs/portal/download-center.md) documentation.