image_filter_transparency

Syntax:	`image_filter_transparency on\|off;`
Default:	`image_filter_transparency on;`
Context:	`http`, `server`, `location`

Defines whether transparency should be preserved when transforming GIF images or PNG images with colors specified by a palette. The loss of transparency results in images of a better quality. The alpha channel transparency in PNG is always preserved.

Links:

https://nginx.org/en/docs/http/ngx_http_image_filter_module.html#image_filter_transparency

doc_nginx

2017-02-09 07:06:34

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