Questions About Using WP Media Folder With Cloudflare R2 (Custom Domain + Remote Image Metadata)

Hello,

I have two questions regarding WP Media Folder when working with Cloudflare R2 as external storage:

1. Using Custom Domains Instead of the R2.dev Public Development URL

When I connect Cloudflare R2 and select an existing bucket, WP Media Folder requires the field “R2.dev subdomain (*)”.
After filling this field, all image URLs are generated using the Public Development URL of the bucket (the *.r2.dev domain).

However, Cloudflare does not recommend using the Development URL in production, and it is also not SEO-friendly.
I would like all image URLs to use the bucket’s Custom Domain (e.g., cdn.mydomain.com) instead of the default r2.dev URL.

Question:
Is there any way to configure WP Media Folder so that it outputs image URLs using my Custom Domain instead of the r2.dev development endpoint?

2. Bulk Editing ALT Text / File Names for Remote Images

When images are stored remotely (Cloudflare R2), is there any method to bulk update the image metadata, such as:

ALT text

Title

File name

Caption

Description

Does WP Media Folder provide any CSV import feature or another bulk-editing tool to modify metadata for remote images?

If not, is there a recommended workflow or integration to achieve this?

Thank you, and I look forward to your guidance.