e83b6b8 created the issue

Hi maybe AWS does not allow you to do this but it would be really awesome if the signed URL could used my custom cloudfront domain name like cyberduck allows when copying secure unsigned URL by basing it on the website address put in in the bookmark.

ie
instead of copying:
https://my-bucket-domain.s3.amazonaws.com/file.pdf?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=FAJDJHASJASDHAJSD/20160810/us-east-1/s3/aws4_request&X-Amz-Date=20160810T120326Z&X-Amz-Expires=86400&X-Amz-SignedHeaders=host&X-Amz-Signature=jwkrhflksjhfdlskjhflksjdfhsdlkjfhsdlkjfhsdlfkjhdslfjkh

instead get valid signed URL for
https://my-bucket-domain/file.pdf?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=FAJDJHASJASDHAJSD/20160810/us-east-1/s3/aws4_request&X-Amz-Date=20160810T120326Z&X-Amz-Expires=86400&X-Amz-SignedHeaders=host&X-Amz-Signature=jwkrhflksjhfdlskjhflksjdfhsdlkjfhsdlkjfhsdlfkjhdslfjkh

Awesome program, Thanks!