~ $ curl -I https://shima.donmai.us/data/7e9b83d159d1dc101e21d5e26e388e92.png
HTTP/2 200
server: nginx/1.14.0 (Ubuntu)
date: Fri, 25 Jan 2019 00:10:13 GMT
content-type: image/png
content-length: 2063732
last-modified: Thu, 24 Jan 2019 20:53:24 GMT
etag: "5c4a25c4-1f7d74"
expires: Thu, 31 Dec 2037 23:55:55 GMT
cache-control: max-age=315360000
accept-ranges: bytes
~ $ curl -I https://saitou.donmai.us/data/7e9b83d159d1dc101e21d5e26e388e92.png
HTTP/2 200
server: nginx/1.14.0 (Ubuntu)
date: Fri, 25 Jan 2019 00:10:19 GMT
content-type: image/png
content-length: 2063732
last-modified: Thu, 24 Jan 2019 20:53:26 GMT
etag: "5c4a25c6-1f7d74"
expires: Thu, 31 Dec 2037 23:55:55 GMT
cache-control: max-age=315360000
accept-ranges: bytes
The expected size is 2MB, correct? The version you have may just be a stale cached version.