How to take static website backup ?
 

I have a static website contains only files of html, js, css, json and many more...
I cannot direct upload / download ( eg. sftp ) to the host. I can only maintain the website content by Content Management System provided by the host administrator.
Every time i want to backup my website files, i can only backup them by using chrome extention Spider to crawling all the files first, and then download the file by wget.
so can anyone tell me any suggestion ?