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Editorial Team
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Asked: 2026-06-11T16:39:29+00:00

I have a web application that allows a client to request several image thumbnails

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I have a web application that allows a client to request several image thumbnails at once. The response is currently sent as a JSON-encoded list of objects where each object includes the (encoded) image data. (I’m using JSON.NET; it looks like it’s encoding the image data as base64 strings).

If I change my application such that the image data is sent separately from the JSON object, as “binary” (application/octet-stream) content, will this be more efficient?

Or put more simply, is application/octet stream a more compact encoding than base64?

Also, how does this differ from image/jpeg?

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1 Answer

  1. Editorial Team

    OK, so application/octet-stream is essentially binary, which is – of course – more efficient than base64. Something like 30% more efficient in terms of space, and removes the need to encode/decode.

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