Backblaze B2

backends:
  - id: b2
    name: "Backblaze B2"
    type: s3v4
    endpoint: https://s3.us-west-002.backblazeb2.com
    region: us-west-002
    access_key_env: B2_KEY_ID
    secret_key_env: B2_APPLICATION_KEY
    path_style: false

#Notes

• Use the S3-compatible API key, not the legacy B2 native API key. The S3 endpoint requires a key generated in the "Application Keys" section of the B2 console with S3-compatible scope.
• The endpoint base depends on the region of your bucket. Find it in the B2 console under Endpoint.
• region matches the URL slug (us-west-002, etc.) — B2 treats it as a literal label.
• B2 supports lifecycle, versioning, and bucket-level CORS but not full AWS-style bucket policy. The dashboard surfaces upstream errors for unsupported policy shapes.