diff --git a/Dockerfile b/Dockerfile
index bf038ba..96e5f81 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -36,6 +36,13 @@ ENV HTTPS_ONLY=$use_https
 ARG whoogle_port=5000
 ENV EXPOSE_PORT=$whoogle_port
 
+ARG twitter_alt=''
+ENV WHOOGLE_ALT_TW=$twitter_alt
+ARG youtube_alt=''
+ENV WHOOGLE_ALT_YT=$youtube_alt
+ARG instagram_alt=''
+ENV WHOOGLE_ALT_YT=$instagram_alt
+
 COPY . .
 
 EXPOSE $EXPOSE_PORT
diff --git a/README.md b/README.md
index 217302f..fff3ada 100644
--- a/README.md
+++ b/README.md
@@ -129,6 +129,12 @@ Description=Whoogle
 #Environment=WHOOGLE_PROXY_PASS=<proxy password>
 #Environment=WHOOGLE_PROXY_TYPE=<proxy type (http|proxy4|proxy5)
 #Environment=WHOOGLE_PROXY_LOC=<proxy host/ip>
+# Site alternative configurations, uncomment to enable
+# Note: If not set, the feature will still be available
+# with default values. 
+#Environment=WHOOGLE_ALT_TW=nitter.net
+#Environment=WHOOGLE_ALT_YT=invidious.snopyta.org
+#Environment=WHOOGLE_ALT_IG=bibliogram.art/u
 Type=simple
 User=root
 WorkingDirectory=<whoogle_directory>
@@ -229,7 +235,10 @@ There are a few optional environment variables available for customizing a Whoog
 | WHOOGLE_PROXY_TYPE | The type of the proxy server. Can be "socks5", "socks4", or "http".           |
 | WHOOGLE_PROXY_LOC  | The location of the proxy server (host or ip).                 |
 | EXPOSE_PORT        | The port where Whoogle will be exposed.                        |
-| HTTPS_ONLY         | Enforce HTTPS. (See [here](https://github.com/benbusby/whoogle-search#https-enforcement))                            |
+| HTTPS_ONLY         | Enforce HTTPS. (See [here](https://github.com/benbusby/whoogle-search#https-enforcement)) |
+| WHOOGLE_ALT_TW     | The twitter.com alternative to use when site alternatives are enabled in the config. |
+| WHOOGLE_ALT_YT     | The youtube.com alternative to use when site alternatives are enabled in the config. |
+| WHOOGLE_ALT_IG     | The instagram.com alternative to use when site alternatives are enabled in the config. |
 
 ## Usage
 Same as most search engines, with the exception of filtering by time range.
diff --git a/app.json b/app.json
index 7482c98..18846d9 100644
--- a/app.json
+++ b/app.json
@@ -44,6 +44,21 @@
       "description": "The location of the proxy server (host or ip). Leave empty to disable.",
       "value": "",
       "required": false
+    },
+    "WHOOGLE_ALT_TW": {
+      "description": "The site to use as a replacement for twitter.com when site alternatives are enabled in the config."
+      "value": "",
+      "required": false
+    },
+    "WHOOGLE_ALT_YT": {
+      "description": "The site to use as a replacement for youtube.com when site alternatives are enabled in the config."
+      "value": "",
+      "required": false
+    },
+    "WHOOGLE_ALT_IG": {
+      "description": "The site to use as a replacement for instagram.com when site alternatives are enabled in the config."
+      "value": "",
+      "required": false
     }
   }
 }
diff --git a/docker-compose.yml b/docker-compose.yml
index 0d58aac..75ad171 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -13,6 +13,12 @@ services:
       #- WHOOGLE_PROXY_PASS=<proxy password>
       #- WHOOGLE_PROXY_TYPE=<proxy type (http|socks4|socks5)
       #- WHOOGLE_PROXY_LOC=<proxy host/ip>
+      # Site alternative configurations, uncomment to enable
+      # Note: If not set, the feature will still be available
+      # with default values. 
+      #- WHOOGLE_ALT_TW=nitter.net
+      #- WHOOGLE_ALT_YT=invidious.snopyta.org
+      #- WHOOGLE_ALT_IG=bibliogram.art/u
     ports:
       - 5000:5000
     restart: unless-stopped