Nginx image filename remove dimensions by modifying uri with regex

Question

In nginx config, what is the best way to return the original image when the required image size was not found given wordpress image naming/size notation conventions.

So, say if /image-name-150x170.png not found, I want /image-name.png to be returned. -150-170 part can be some other numbers. Therefore, I want dash 1-4 digits x 1-4 digits before dot in the file name to be removed.

I want to put the replace in uri code inside @static_full location block or rewrite. wondering which would be better performance-wise.

#some locations here and then location ~* ^.+\.(png|gif|jpg|jpeg){ access_log off; log_not_found off; expires max; error_page 404 = @static_full; #if not found, seek #static_ful } location @static_full{ #modify uri here to remove image dimensions like below #uri = remove dash 1-4 digits x 1-4 digits before dot #or rewrite to original name } location / { try_files $uri $uri/ /index.php?$args ; } 

UPDATE, I figured out how to do it. The following did what I wanted to do.

location @static_full{ #modify uri here to remove image dimensions like below #uri = remove dash three digits x three digits before dot rewrite "^(.*)(-[\d]{1,4}+x[\d]{1,4}+.)([\w]{3,4})" $1.$3 break; } 

Answer 1

You might consider using try_files instead of the error_page directive.

try_files $uri @static_full; 

See this document for details.

EDIT - added full solution:

location ~* ^.+\.(png|gif|jpg|jpeg) { try_files $uri @static_full; access_log off; log_not_found off; expires max; } location @static_full { rewrite "^(.*)(-[\d]{1,4}+x[\d]{1,4}+.)([\w]{3,4})" $1.$3 break; } location / { try_files $uri $uri/ /index.php?$args ; }