Blob storage -- use custom domains?

[zeev-code]

Summary

Hi,
I didn't find anything on how to use custom domains for linking to documents in Blob storage (I'd like to do my.custom.domain instead of the public.blob.vercel-storage part of the URL).

Is it possible to do this somehow? If not, are there plans for adding this in the future?

Thank you for your help!

Florian

PS.: v0 suggests customDomain=my.custom.domain but this does not exist in PutCommandOptions

Additional information

No response

Example

No response

[jeevanpillay]

same here. would love this feature.

right now cname redirect seems like the way to go. its more like an alias. not as efficient as a A record though but should suffice.

[RobertB4]

Can you elaborate on how you achieved this?
I get an SSL error (ERR_SSL_VERSION_OR_CIPHER_MISMATCH) when I try to add a cname.

[zeev-code]

I did not achieve anything, adding custom domains didn't work.
In case by "how I achieved this" you meant what question I asked v0: I simply asked "how can i add custom domains for linking to documents in Blob storage"

[yihuanlin]

same here. would love this feature.

right now cname redirect seems like the way to go. its more like an alias. not as efficient as a A record though but should suffice.

CNAME did not seem to work for me. It is banned by my DNS provider Cloudflare for Cross-User Request (I guess blob is also hosted on CF). I am using rewrite for now.

Error 1014
CNAME Cross-User Banned
What happened?

You've requested a page on a website that is part of the Cloudflare network. The host is configured as a CNAME across accounts on Cloudflare, which is not allowed by Cloudflare's security policy.
What can I do?

If this is an R2 custom domain, it may still be initializing. If you have attempted to manually point a CNAME DNS record to your R2 bucket, you must do it using a custom domain. Refer to R2's documentation for details.

Visit our website to learn more about Cloudflare.

[mdvertola]

I have not been able to find documentation on custom blob domains on vercel anywhere but here is my workaround:

i created a route in my next app /api/files/[...] then i use this to proxy vercel blob object/url and return the file at this endpoint. This way all of my files are served from my domain and i dont need to worry about certs, dns records, etc.

my primary issue was sending emails with photos and having a domain mismatch. This pattern was holding up a lot of my emails and getting me triggered in quarantine/spam/promotions.

The solution is not perfect and it does add some additional requests to my server but it does also allow for a bit more granular access control systems as well. eg i can use auth js in this api route to lock files down on a per user basis.