How to change nginx image?

Question

Nginx

There are two pictures on the site.

/images/image.jpg
/images/image.webp

It is necessary that, when requested, it should be /images/image.jpgreturned /images/image.webpon the condition that in request headerAccept:image/webpi.e. browser supports webp format.
As a result, if I open /images/image.jpgit in such a browser, I will see in the response headers Content-Type:image/webp, and Content-Lengthit will correspond to/images/image.webp

Answer 1

something like this:

if ($http_accept ~* "image/webp") { 
      rewrite ^/(.*)\.jpg$ /$1.webp;
}

Answer 2

Convenient conversion and substitution for the desired format is in the pagespeed module from Google.
https://github.com/pagespeed/ngx_pagespeed