image-proxy

An image proxy server that resizes images before serving them. Intended to only be used with images that already have a consistent size (such as already processed avatars).

Configuration

Configuration is done in a config.json file, with the following keys:

• port: the port the server will listen on
• debug: whether the server will log all request paths and durations
• proxy_target: the target for the reverse proxy, used when the requested size is the image's actual size. Should be the full base URL of the target server, without a trailing slash.
• patterns: an array of patterns to accept
  • input: (string) the input regex. This should start with a / and use unnamed capture groups.
  • output: (string) the URL to rewrite the link to, using $1 $2 (etc) as placeholders for the capture groups.
  • cache_key: (string) the file name used for cached files. Must be unique across all patterns.
  • content_type: (string) the Content-Type header to return with requests.
  • sizes: (array of numbers) the acceptable sizes for this pattern. The first size in the list is the default, and will be passed through unmodified.

To-do list

• Clean up old, unused cache entries