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We have several examples [1].

I think you need to set s3ForcePathStyle to true for the first example (or however you do it in the v3 version of the SDK[2]). For the latter, we don't support pre-signed requests. Feel free to ask on discord [3] too. Might get more timely responses.

[1] https://developers.cloudflare.com/r2/examples

[2] https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clien...

[3] https://discord.gg/cloudflaredev

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Thanks for the resources! I managed to get both working in the end. Some notes for future readers:

For SDK v3, I just needed to add the forcePathStyle flag.

For aws4fetch (note that this isn't a presigned request, it's just signing the request for Sig V4 like the official SDK would), I needed to change the fetch url to https://my-account-id.r2.cloudflarestorage.com/my-bucket/key.

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