id summary reporter owner description type status priority milestone component version resolution keywords cc uname nginx_version 1015 image_filter module failure to perform image_filter_jpeg_quality step Robert Kenny "When nginx is built from source to include the image_filter module as follows: {{{ apt-get -y update apt-get -y install imagemagick libreadline-dev libncurses5-dev libpcre3-dev libssl-dev perl make build-essential libgd2-xpm-dev cd /usr/local/src wget http://luajit.org/download/LuaJIT-2.0.4.tar.gz tar -zxvf LuaJIT-2.0.4.tar.gz cd /usr/local/src/LuaJIT-2.0.4 make make install cd /usr/local/src wget https://github.com/openresty/set-misc-nginx-module/archive/v0.30.tar.gz tar -zxvf v0.30.tar.gz wget https://github.com/simpl/ngx_devel_kit/archive/v0.3.0.tar.gz tar -zxvf v0.3.0.tar.gz wget https://github.com/openresty/lua-nginx-module/archive/v0.10.5.tar.gz tar -zxvf v0.10.5.tar.gz wget http://zlib.net/zlib-1.2.8.tar.gz tar -zxvf zlib-1.2.8.tar.gz wget http://nginx.org/download/nginx-1.11.1.tar.gz tar -zxvf nginx-1.11.1.tar.gz cd /usr/local/src/nginx-1.11.1 # tell nginx's build system where to find LuaJIT 2.0: export LUAJIT_LIB=/usr/local/lib export LUAJIT_INC=/usr/local/include/luajit-2.0 ./configure --sbin-path=/usr/local/nginx/nginx --conf-path=/usr/local/nginx/nginx.conf --pid-path=/usr/local/nginx/nginx.pid --with-http_image_filter_module --with-http_ssl_module --with-zlib=/home/ubuntu/zlib-1.2.8 --with-ld-opt=""-Wl,-rpath,/usr/local/lib"" --add-module=/usr/local/src/ngx_devel_kit-0.3.0 --add-module=/usr/local/src/lua-nginx-module-0.10.5 --add-module=/usr/local/src/set-misc-nginx-module-0.30 make -j2 make install }}} With the following config: {{{ worker_processes auto; events { worker_connections 768; } http { charset utf-8; proxy_intercept_errors on; include mime.types; default_type application/octet-stream; server { listen 80; location / { image_filter_buffer 200M; image_filter_interlace on; image_filter_jpeg_quality $arg_q; proxy_pass https://raw.githubusercontent.com/guardian/grid/master/docs/images/screenshot-2015-07-03T11%3A34%3A43.jpg; } } } }}} Requests for images seem not to be run through the image_filter module (i.e. there is no quality reduction). In addition attempting to perform a resize (""image_filter resize $arg_w $arg_h"") causes a 415 error consistently. '''Notes:''' The reason for not using the 'nginx' and 'nginx-extras' packages is that I also require the lua module and set_misc. I have also attempted to build Openresty with the image_filter module (as it's a bit less fiddly than the above) with similar effects. " defect closed minor nginx-module 1.11.x invalid image_filter Linux ip-172-31-19-164 4.2.0-41-generic #48-Ubuntu SMP Fri Jun 24 11:28:43 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux nginx version: nginx/1.11.1