Module ngx_http_image_filter_module
- Example Configuration
- Directives
- image_filter
- image_filter_buffer
- image_filter_interlace
- image_filter_jpeg_quality
- image_filter_sharpen
- image_filter_transparency
- image_filter_webp_quality
The ngx_http_image_filter_module
module (0.7.54+) is a filter that transforms images in JPEG, GIF, PNG, and WebP formats.
This module is not built by default, it should be enabled with the --with-http_image_filter_module
configuration parameter.
This module utilizes the libgd library. It is recommended to use the latest available version of the library.
The WebP format support appeared in version 1.11.6. To transform images in this format, the libgd
library must be compiled with the WebP support.