+
+## :rich_media
+* `enabled`: if enabled the instance will parse metadata from attached links to generate link previews
+
+## :fetch_initial_posts
+* `enabled`: if enabled, when a new user is federated with, fetch some of their latest posts
+* `pages`: the amount of pages to fetch
+
+## :hackney_pools
+
+Advanced. Tweaks Hackney (http client) connections pools.
+
+There's three pools used:
+
+* `:federation` for the federation jobs.
+ You may want this pool max_connections to be at least equal to the number of federator jobs + retry queue jobs.
+* `:media` for rich media, media proxy
+* `:upload` for uploaded media (if using a remote uploader and `proxy_remote: true`)
+
+For each pool, the options are:
+
+* `max_connections` - how much connections a pool can hold
+* `timeout` - retention duration for connections
+
+## :auto_linker
+
+Configuration for the `auto_linker` library:
+
+* `class: "auto-linker"` - specify the class to be added to the generated link. false to clear
+* `rel: "noopener noreferrer"` - override the rel attribute. false to clear
+* `new_window: true` - set to false to remove `target='_blank'` attribute
+* `scheme: false` - Set to true to link urls with schema `http://google.com`
+* `truncate: false` - Set to a number to truncate urls longer then the number. Truncated urls will end in `..`
+* `strip_prefix: true` - Strip the scheme prefix
+* `extra: false` - link urls with rarely used schemes (magnet, ipfs, irc, etc.)
+
+Example:
+
+```exs
+config :auto_linker,
+ opts: [
+ scheme: true,
+ extra: true,
+ class: false,
+ strip_prefix: false,
+ new_window: false,
+ rel: false
+ ]
+```