Storage: option to set `Content-Disposition: attachment` header

[catlan]

Feature request

It would be nice to have the option to set Content-Disposition: attachment header for storage object to allow download of images in the browser, instead of the browser displaying them inline.

Is your feature request related to a problem? Please describe.

The HTML a download attribute, like
<a href="https://[project_ref].supabase.co/storage/v1/object/public/[id]" download>Image Download</a>, only works for same-origin. See https://stackoverflow.com/a/49736875/23028

Describe the solution you'd like

Adding parameter like Image Transformations

https://project_id.supabase.co/storage/v1/render/image/public/bucket/image.jpg?download=true

Or add to option to the uploading/updating API, like the existing Content-Type FileOptions.

	const { data, error } = await supabase.storage
		.from('avatars')
		.upload('public/avatar1.png', avatarFile, {
			contentDisposition: 'attachment'
		}) 

Describe alternatives you've considered

A roundabout workaround would be to create your own API end point that sets the Content-Disposition: attachment header and stream the data from the storage.

[fenos]

Hello @catlan we already support the Content-Disponition header for downloading assets.

simply pass the download: true option to the getPublicUrl method or add a ?download= param to the query-string

[mellowcello77]

I added the ?download (without =true), with =true I get a file names "true"