AWS S3 Access Denied when open object URL in browser

Here is the problem, in your bucket policies you only allow put and you are not allowing read access:

"Action": [ "s3:PutObject", "s3:PutObjectAcl" ],

I doubted this might need permission to get the object so that you can view the image from the URL in S3.

I configured the bucket policy like given below.

{
"Version": "2012-10-17",
"Statement": [
    {
        "Sid": "AddPerm",
        "Effect": "Allow",
        "Principal": "*",
        "Action": [
            "s3:PutObject",
            "s3:PutObjectAcl",
            "s3:GetObject"
        ],
        "Resource": "arn:aws:s3:::delxpro.com/*"
    }
]
}   

In the above code, look for this piece of line "s3:GetObject". Add this line in your action attribute and check will it work or not.

It will retrieves object from S3, so that you can view your image from the URL.