diff --git a/src/invidious/config.cr b/src/invidious/config.cr
index 9c18da26..f2415604 100644
--- a/src/invidious/config.cr
+++ b/src/invidious/config.cr
@@ -88,6 +88,8 @@ class Config
   property hmac_key : String = ""
   # Domain to be used for links to resources on the site where an absolute URL is required
   property domain : String?
+  # Alternative domains. You can add other domains, like TOR and I2P addresses
+  property alternative_domains : Array(String) = [] of String
   property donation_url : String?
   property contact_url : String?
   property home_domain : String?
diff --git a/src/invidious/routes/login.cr b/src/invidious/routes/login.cr
index add9f75d..4c5446f8 100644
--- a/src/invidious/routes/login.cr
+++ b/src/invidious/routes/login.cr
@@ -60,7 +60,13 @@ module Invidious::Routes::Login
           sid = Base64.urlsafe_encode(Random::Secure.random_bytes(32))
           Invidious::Database::SessionIDs.insert(sid, email)
 
-          env.response.cookies["SID"] = Invidious::User::Cookies.sid(CONFIG.domain, sid)
+          # Checks if there is any alternative domain, like a second domain name,
+          # TOR or I2P address
+          if alt = CONFIG.alternative_domains.index(env.request.headers["Host"])
+            env.response.cookies["SID"] = Invidious::User::Cookies.sid(CONFIG.alternative_domains[alt], sid)
+          else
+            env.response.cookies["SID"] = Invidious::User::Cookies.sid(CONFIG.domain, sid)
+          end
         else
           return error_template(401, "Wrong username or password")
         end
@@ -160,7 +166,13 @@ module Invidious::Routes::Login
         Invidious::Database::Users.insert(user)
         Invidious::Database::SessionIDs.insert(sid, email)
 
-        env.response.cookies["SID"] = Invidious::User::Cookies.sid(CONFIG.domain, sid)
+        # Checks if there is any alternative domain, like a second domain name,
+        # TOR or I2P address
+        if alt = CONFIG.alternative_domains.index(env.request.headers["Host"])
+          env.response.cookies["SID"] = Invidious::User::Cookies.sid(CONFIG.alternative_domains[alt], sid)
+        else
+          env.response.cookies["SID"] = Invidious::User::Cookies.sid(CONFIG.domain, sid)
+        end
 
         if env.request.cookies["PREFS"]?
           user.preferences = env.get("preferences").as(Preferences)
diff --git a/src/invidious/routes/preferences.cr b/src/invidious/routes/preferences.cr
index 61439230..725556b1 100644
--- a/src/invidious/routes/preferences.cr
+++ b/src/invidious/routes/preferences.cr
@@ -219,7 +219,13 @@ module Invidious::Routes::PreferencesRoute
         File.write("config/config.yml", CONFIG.to_yaml)
       end
     else
-      env.response.cookies["PREFS"] = Invidious::User::Cookies.prefs(CONFIG.domain, preferences)
+      # Checks if there is any alternative domain, like a second domain name,
+      # TOR or I2P address
+      if alt = CONFIG.alternative_domains.index(env.request.headers["Host"])
+        env.response.cookies["PREFS"] = Invidious::User::Cookies.prefs(CONFIG.alternative_domains[alt], preferences)
+      else
+        env.response.cookies["PREFS"] = Invidious::User::Cookies.prefs(CONFIG.domain, preferences)
+      end
     end
 
     env.redirect referer
@@ -254,7 +260,13 @@ module Invidious::Routes::PreferencesRoute
         preferences.dark_mode = "dark"
       end
 
-      env.response.cookies["PREFS"] = Invidious::User::Cookies.prefs(CONFIG.domain, preferences)
+      # Checks if there is any alternative domain, like a second domain name,
+      # TOR or I2P address
+      if alt = CONFIG.alternative_domains.index(env.request.headers["Host"])
+        env.response.cookies["PREFS"] = Invidious::User::Cookies.prefs(CONFIG.alternative_domains[alt], preferences)
+      else
+        env.response.cookies["PREFS"] = Invidious::User::Cookies.prefs(CONFIG.domain, preferences)
+      end
     end
 
     if redirect
diff --git a/src/invidious/user/cookies.cr b/src/invidious/user/cookies.cr
index 654efc15..a9928d0a 100644
--- a/src/invidious/user/cookies.cr
+++ b/src/invidious/user/cookies.cr
@@ -6,17 +6,22 @@ struct Invidious::User
 
     # Note: we use ternary operator because the two variables
     # used in here are not booleans.
-    SECURE = (Kemal.config.ssl || CONFIG.https_only) ? true : false
+    @@secure = (Kemal.config.ssl || CONFIG.https_only) ? true : false
 
     # Session ID (SID) cookie
     # Parameter "domain" comes from the global config
     def sid(domain : String?, sid) : HTTP::Cookie
+      # Not secure if it's being accessed from I2P
+      # Browsers expect the domain to include https. On I2P there is no HTTPS
+      if domain.not_nil!.split(".").last == "i2p"
+        @@secure = false
+      end
       return HTTP::Cookie.new(
         name: "SID",
         domain: domain,
         value: sid,
         expires: Time.utc + 2.years,
-        secure: SECURE,
+        secure: @@secure,
         http_only: true,
         samesite: HTTP::Cookie::SameSite::Lax
       )
@@ -25,12 +30,17 @@ struct Invidious::User
     # Preferences (PREFS) cookie
     # Parameter "domain" comes from the global config
     def prefs(domain : String?, preferences : Preferences) : HTTP::Cookie
+      # Not secure if it's being accessed from I2P
+      # Browsers expect the domain to include https. On I2P there is no HTTPS
+      if domain.not_nil!.split(".").last == "i2p"
+        @@secure = false
+      end
       return HTTP::Cookie.new(
         name: "PREFS",
         domain: domain,
         value: URI.encode_www_form(preferences.to_json),
         expires: Time.utc + 2.years,
-        secure: SECURE,
+        secure: @@secure,
         http_only: false,
         samesite: HTTP::Cookie::SameSite::Lax
       )