tutorials/metadata.md

Working with the Metadata

The metadata files are in parquet format, and contain the following attributes:

• id: A unique identifier for the image.
• url: The URL of the image.
• s3_key: The S3 file key of the image.
• caption: A caption for the image.
• md5_hash: The MD5 hash of the image file.
• mime_type: The MIME type of the image file.
• width: The width of the image in pixels.
• height: The height of the image in pixels.
• license_type: The URL of the license.

Open a metadata file

The files are in parquet format, and can be opened with a tool like pandas in Python.

import pandas as pd
df = pd.read_parquet('pd15m-metadata.001.parquet')

Get URLs from metadata

Once you have opened a maetadata file with pandas, you can get the URLs of the images with the following command:

urls = df['url']

Get S3 File Keys from metadata

You can also get the S3 file keys, which can be used to download the images using the S3 CLI:

s3_keys = df['s3_key']