Webp is new (and smaller) image format. This module will convert jpg/png image on fly and send webp response.
Under development. To be continued.
First you need to install cwebp tool as per https://developers.google.com/speed/webp/docs/cwebp
$ cd nginx-1.x.x
$ ./configure --add-module=/path/to/ngx_webp
$ make && make install
Then you need to copy "webp" script to /etc/nginx/ dir. So /etc/nginx/webp will be triggered for each appropriate Accept header and Content-Type.
- syntax:
webp - context:
location
Enables or disables module.
location ~ ".jpg" { webp; }
$ curl -SLIXGET -H "accept:image/webp" http://127.0.0.1/1.jpg
HTTP/1.1 200 OK
Server: nginx/1.13.12
Date: Wed, 25 Apr 2018 10:16:45 GMT
Content-Length: 223980
Last-Modified: Wed, 25 Apr 2018 10:16:45 GMT
Connection: keep-alive
Content-Type: image/webp
$ curl -SLIXGET -H "accept:image/*" http://127.0.0.1/1.jpg
HTTP/1.1 200 OK
Server: nginx/1.13.12
Date: Wed, 25 Apr 2018 10:17:53 GMT
Content-Length: 325991
Last-Modified: Wed, 18 Apr 2018 19:55:14 GMT
Connection: keep-alive
Content-Type: image/jpeg
As webp convertion takes some CPU usage I recommend to use some kind of caching of nginx responses, like Varnish.