Google Cloud Storage CORS configuration

google-cloud-storage-cors-config.md

Use the gsutil cors command to configure CORS on a bucket:

gsutil cors set cors-json-file.json gs://example

Where cors-json-file.json contains:

[
    {
      "origin": ["*"],
      "responseHeader": ["*"],
      "method": ["GET", "POST", "PUT", "OPTIONS", "HEAD", "DELETE"],
      "maxAgeSeconds": 3600
    }
]

This is a DANGEROUS wildcard configuration. Use it only to test, then set your parameters correctly.

You can also use the gsutil cors command to get the CORS configuration of a bucket:

gsutil cors get gs://example

More info: https://cloud.google.com/storage/docs/configuring-cors