connect-image-proxy

Middleware for proxying and manipulating images.

npm install connect-image-proxy
21 downloads in the last day
204 downloads in the last week
443 downloads in the last month

Middleware for proxying and manipulating images

This module allows you to manipulate and convert images on the fly.

It provides:

  • Resizing of images
  • Conversion of images to grayscale
  • Conversion of images into different formats
  • Only proxies images from the same domain that the proxy is running on - not an open proxy (this could be easily changed in future)

Installation

npm install connect-image-proxy

and then in your code (eg an Express app):

var image_proxy = require('connect-image-proxy');

app.configure(function(){
  ....

  // mount the proxy at '/proxy'
  app.use( '/proxy', image_proxy() );
  ....
});

Usage

  • Resize: hostname/route/?url=[url]&resize=1&height=[height]&width=[width]
  • Grayscale: hostname/route/?url=[url]&grayscale=1
  • Conversion [JPG, PNG, GIF]: hostname/route/?url=[url]&format=[format]
  • Conversion + Grayscale + Resize: hostname/route/?url=[url]&format=png&grayscale=1&resize=1&height=[height]&width=[width]

Example app

There is an example app in the examples folder that demonstrates the basic features.

TODO

  • Allow user to specify a list of hostnames to proxy for, not just the same host as the proxy is running on.
  • Add proper caching headers, or at least repeat the cache headers of the original image.
npm loves you