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What Is HTTP 206 Partial Content?

HTTP 206 Partial Content explained, and what it means when you see it in CI/CD and deployments.

HTTP 206 means the server is delivering part of a resource in response to a Range request.

What it means

A 206 supports resumable and parallel downloads by serving byte ranges. Clients use it to resume interrupted transfers.

When you see it in CI/CD

CI download tools use range requests to resume large artifact downloads after a network blip, getting a 206 for the remaining bytes.

Key takeaways

  • 206 means partial content.
  • Supports resumable downloads.
  • Helps recover interrupted transfers.

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