1. No os.exec call of pngquant or mozjpeg. Only bindings to libraries.
2. Using libvips for fast image resizing
3. Docker container uses libvips compiled with mozjpeg instead of libjpeg-turbo. MozJPEG makes tradeoffs that are intended to benefit Web use cases and focuses solely on improving encoding, so it's best used as part of a Web encoding workflow.
4. png images are optimized with libimagequant (backend library of pngquant)

1. Deploy it with Docker
2. Configure frontend
3. Enjoy!

1. Pull docker container: docker pull larrabee/reimage:1.2.5
2. Run it with docker run -d -p 7075:7075 larrabee/reimage:1.2.5 or use docker-compose config:

version: '2.2'
services:
  reImage:
    image: larrabee/reimage:1.2.5
    restart: always
    ports:
      - "7075:7075"  

This is basic Nginx config for online resizing with nginx cache.

http {
    proxy_cache_path /var/www/resize_cache levels=1:2 
    keys_zone=resized_img:64m inactive=48h max_size=5G use_temp_path=off;

    server {
        listen       80;
        server_name  example.com;
        root /var/www/example.com/;

        location /img/ {
           location ~* \.(jpg|jpeg|png|ico)(\@[0-9xX]+)$ {
             proxy_pass http://localhost:7075; #Node with running image resizer
             proxy_set_header X-RESIZE-SCHEME "http";
             proxy_set_header X-RESIZE-BASE "example.com";
             #Nginx cache. Optional
             proxy_cache_valid  200 48h;
             proxy_cache_valid  404 400 5m;
             proxy_cache_valid 500 502 503 504 10s;
             add_header X-Cache-Status $upstream_cache_status;
             proxy_cache resized_img;
           }
        }
    }
}

Required options:

1. Replace localhost:7075 with your hostname and port if you ran resizer in different node.
2. Set X-RESIZE-SCHEME "http" if your image server with original images run over http (by default use https).
3. Set you image server hostname here: X-RESIZE-BASE "example.com"

Optional:

1. Set X-RESIZE-QUALITY header if you want to override quality settings. Default value: 80, allowed values: 1-100
2. Set X-RESIZE-COMPRESSION header if you want to override compression settings. Default value: 6, allowed values: 0-9

• Upload test image to /img/test.jpg on your server
• Get original image http://example.com/img/test.jpg (naturally it must be present on your server).
• Get resized to 1280x720 version http://example.com/img/test.jpg@1280 (height resolution will be calculate automatically)
• Another way: http://example.com/img/test.jpg@x720 (width resolution will be calculate automatically)
• Get resized to 500x500 version (image will be resized and striped to 500x500) http://example.com/img/test.jpg@500x500
• Get resized to 500x500 version converted to webp (image will be resized and striped to 500x500 and converted to webp) http://example.com/img/test.jpg@500x500?fmt=webp. Supported formats: jpeg (or jpg), png, webp, tiff.
• Get resized to 500x500 version with custom compression (image will be resized and striped to 500x500) http://example.com/img/test.jpg@500x500?cmp=9. Compression value range: from 0 to 9.
• Get resized to 500x500 version with custom quality (image will be resized and striped to 500x500) http://example.com/img/test.jpg@500x500?qlt=100. Quality value range: from 0 to 100.
• Get resized to 500x500 version with custom background color http://example.com/img/test.jpg@500x500?bgclr=003cfa. Format: RGB in HEX encoding, like "ffffff" for white. Default: "000000" for none.

See benchmark Wiki page

MIT