diff --git a/Content.Server/GameTicking/GameTicker.LobbyBackground.cs b/Content.Server/GameTicking/GameTicker.LobbyBackground.cs
index 7f2ccfe235..2090e3e31f 100644
--- a/Content.Server/GameTicking/GameTicker.LobbyBackground.cs
+++ b/Content.Server/GameTicking/GameTicker.LobbyBackground.cs
@@ -13,7 +13,7 @@ public sealed partial class GameTicker
     [ViewVariables]
     private List<ResPath>? _lobbyBackgrounds;
 
-    private static readonly string[] WhitelistedBackgroundExtensions = new string[] {"png", "jpg", "jpeg"};
+    private static readonly string[] WhitelistedBackgroundExtensions = new string[] {"png", "jpg", "jpeg", "webp"};
 
     private void InitializeLobbyBackground()
     {
diff --git a/Resources/Prototypes/lobbyscreens.yml b/Resources/Prototypes/lobbyscreens.yml
index b61e6b73a4..b158d7856e 100644
--- a/Resources/Prototypes/lobbyscreens.yml
+++ b/Resources/Prototypes/lobbyscreens.yml
@@ -1,31 +1,31 @@
 - type: lobbyBackground
   id: Robotics
-  background: /Textures/LobbyScreens/robotics.png
+  background: /Textures/LobbyScreens/robotics.webp
 
 - type: lobbyBackground
   id: Supermatter
-  background: /Textures/LobbyScreens/supermatter.png
+  background: /Textures/LobbyScreens/supermatter.webp
 
 - type: lobbyBackground
   id: Warden
-  background: /Textures/LobbyScreens/warden.png
+  background: /Textures/LobbyScreens/warden.webp
 
 - type: lobbyBackground
   id: Pharmacy
-  background: /Textures/LobbyScreens/pharmacy.png
+  background: /Textures/LobbyScreens/pharmacy.webp
 
 - type: lobbyBackground
   id: SSXIV
-  background: /Textures/LobbyScreens/ssxiv.png
+  background: /Textures/LobbyScreens/ssxiv.webp
 
 - type: lobbyBackground
   id: Susstation
-  background: /Textures/LobbyScreens/susstation.png
+  background: /Textures/LobbyScreens/susstation.webp
 
 - type: lobbyBackground
   id: SkellyVsTheRev
-  background: /Textures/LobbyScreens/skellyvstherev.png
+  background: /Textures/LobbyScreens/skellyvstherev.webp
 
 - type: lobbyBackground
   id: Doomed
-  background: /Textures/LobbyScreens/doomed.png
+  background: /Textures/LobbyScreens/doomed.webp
diff --git a/Resources/Textures/LobbyScreens/PutLobbyScreensHere.txt b/Resources/Textures/LobbyScreens/PutLobbyScreensHere.txt
index 52cb3f1dc9..7d7777fa10 100644
--- a/Resources/Textures/LobbyScreens/PutLobbyScreensHere.txt
+++ b/Resources/Textures/LobbyScreens/PutLobbyScreensHere.txt
@@ -1,2 +1,3 @@
 Note:
-Only png and jpgs files are supported, and you need a prototype in Resources/Prototypes/lobbyscreens.yml
+PNG, JPEG and WebP is supported. Please prefer a lossy WebP compression since lobby art is big.
+You also need to put a prototype in Resources/Prototypes/lobbyscreens.yml
diff --git a/Resources/Textures/LobbyScreens/attributions.yml b/Resources/Textures/LobbyScreens/attributions.yml
index 90287ef893..c84bac0ebb 100644
--- a/Resources/Textures/LobbyScreens/attributions.yml
+++ b/Resources/Textures/LobbyScreens/attributions.yml
@@ -1,29 +1,29 @@
-- files: ["supermatter.png", "robotics.png"]
+- files: ["supermatter.webp", "robotics.webp"]
   license: "CC-BY-NC-SA-3.0"
   copyright: "Veritius#2351 (257233913951289344) on discord / @Veritius on GitHub"
   source: "https://github.com/Veritius"
 
-- files: ["warden.png", "pharmacy.png"]
+- files: ["warden.webp", "pharmacy.webp"]
   license: "CC-BY-NC-SA-3.0"
   copyright: "Solbusaur#4343 (220208697429852160) on discord"
   source: "https://github.com/space-wizards/space-station-14"
 
-- files: ["ssxiv.png"]
+- files: ["ssxiv.webp"]
   license: "CC-BY-NC-SA-3.0"
   copyright: "Abyssal#4842 on discord / @aby_doodles on Twitter"
   source: "https://twitter.com/aby_doodles"
 
-- files: ["susstation.png"]
+- files: ["susstation.webp"]
   license: "CC-BY-NC-SA-3.0"
   copyright: "Alekshhh github"
   source: "https://github.com/space-wizards/space-station-14"
 
-- files: ["skellyvstherev.png"]
+- files: ["skellyvstherev.webp"]
   license: "CC-BY-SA-4.0"
   copyright: "Hannah 'FairlySadPanda' Dawson 2024"
   source: "https://github.com/FairlySadPanda"
 
-- files: ["doomed.png"]
+- files: ["doomed.webp"]
   license: "CC-BY-NC-SA-3.0"
   copyright: "brainfood1183 github"
   source: "https://github.com/space-wizards/space-station-14"
diff --git a/Resources/Textures/LobbyScreens/doomed.png b/Resources/Textures/LobbyScreens/doomed.png
deleted file mode 100644
index 123f8acbfa..0000000000
Binary files a/Resources/Textures/LobbyScreens/doomed.png and /dev/null differ
diff --git a/Resources/Textures/LobbyScreens/doomed.webp b/Resources/Textures/LobbyScreens/doomed.webp
new file mode 100644
index 0000000000..58a7313b23
Binary files /dev/null and b/Resources/Textures/LobbyScreens/doomed.webp differ
diff --git a/Resources/Textures/LobbyScreens/doomed.png.yml b/Resources/Textures/LobbyScreens/doomed.webp.yml
similarity index 100%
rename from Resources/Textures/LobbyScreens/doomed.png.yml
rename to Resources/Textures/LobbyScreens/doomed.webp.yml
diff --git a/Resources/Textures/LobbyScreens/pharmacy.png b/Resources/Textures/LobbyScreens/pharmacy.png
deleted file mode 100644
index d49aa9ca99..0000000000
Binary files a/Resources/Textures/LobbyScreens/pharmacy.png and /dev/null differ
diff --git a/Resources/Textures/LobbyScreens/pharmacy.webp b/Resources/Textures/LobbyScreens/pharmacy.webp
new file mode 100644
index 0000000000..0ee24d88be
Binary files /dev/null and b/Resources/Textures/LobbyScreens/pharmacy.webp differ
diff --git a/Resources/Textures/LobbyScreens/pharmacy.png.yml b/Resources/Textures/LobbyScreens/pharmacy.webp.yml
similarity index 100%
rename from Resources/Textures/LobbyScreens/pharmacy.png.yml
rename to Resources/Textures/LobbyScreens/pharmacy.webp.yml
diff --git a/Resources/Textures/LobbyScreens/robotics.png b/Resources/Textures/LobbyScreens/robotics.png
deleted file mode 100644
index e39282810e..0000000000
Binary files a/Resources/Textures/LobbyScreens/robotics.png and /dev/null differ
diff --git a/Resources/Textures/LobbyScreens/robotics.webp b/Resources/Textures/LobbyScreens/robotics.webp
new file mode 100644
index 0000000000..43d32581cf
Binary files /dev/null and b/Resources/Textures/LobbyScreens/robotics.webp differ
diff --git a/Resources/Textures/LobbyScreens/robotics.png.yml b/Resources/Textures/LobbyScreens/robotics.webp.yml
similarity index 100%
rename from Resources/Textures/LobbyScreens/robotics.png.yml
rename to Resources/Textures/LobbyScreens/robotics.webp.yml
diff --git a/Resources/Textures/LobbyScreens/skellyvstherev.png b/Resources/Textures/LobbyScreens/skellyvstherev.png
deleted file mode 100644
index 2d4887c514..0000000000
Binary files a/Resources/Textures/LobbyScreens/skellyvstherev.png and /dev/null differ
diff --git a/Resources/Textures/LobbyScreens/skellyvstherev.webp b/Resources/Textures/LobbyScreens/skellyvstherev.webp
new file mode 100644
index 0000000000..09bcf5b2f7
Binary files /dev/null and b/Resources/Textures/LobbyScreens/skellyvstherev.webp differ
diff --git a/Resources/Textures/LobbyScreens/skellyvstherev.png.yml b/Resources/Textures/LobbyScreens/skellyvstherev.webp.yml
similarity index 100%
rename from Resources/Textures/LobbyScreens/skellyvstherev.png.yml
rename to Resources/Textures/LobbyScreens/skellyvstherev.webp.yml
diff --git a/Resources/Textures/LobbyScreens/ssxiv.png b/Resources/Textures/LobbyScreens/ssxiv.png
deleted file mode 100644
index ffa20f43b0..0000000000
Binary files a/Resources/Textures/LobbyScreens/ssxiv.png and /dev/null differ
diff --git a/Resources/Textures/LobbyScreens/ssxiv.webp b/Resources/Textures/LobbyScreens/ssxiv.webp
new file mode 100644
index 0000000000..32e248f802
Binary files /dev/null and b/Resources/Textures/LobbyScreens/ssxiv.webp differ
diff --git a/Resources/Textures/LobbyScreens/ssxiv.png.yml b/Resources/Textures/LobbyScreens/ssxiv.webp.yml
similarity index 100%
rename from Resources/Textures/LobbyScreens/ssxiv.png.yml
rename to Resources/Textures/LobbyScreens/ssxiv.webp.yml
diff --git a/Resources/Textures/LobbyScreens/supermatter.png b/Resources/Textures/LobbyScreens/supermatter.png
deleted file mode 100644
index 1cc7c6ce40..0000000000
Binary files a/Resources/Textures/LobbyScreens/supermatter.png and /dev/null differ
diff --git a/Resources/Textures/LobbyScreens/supermatter.webp b/Resources/Textures/LobbyScreens/supermatter.webp
new file mode 100644
index 0000000000..d5fb190ae6
Binary files /dev/null and b/Resources/Textures/LobbyScreens/supermatter.webp differ
diff --git a/Resources/Textures/LobbyScreens/supermatter.png.yml b/Resources/Textures/LobbyScreens/supermatter.webp.yml
similarity index 100%
rename from Resources/Textures/LobbyScreens/supermatter.png.yml
rename to Resources/Textures/LobbyScreens/supermatter.webp.yml
diff --git a/Resources/Textures/LobbyScreens/susstation.png b/Resources/Textures/LobbyScreens/susstation.png
deleted file mode 100644
index c0f5c6a6c8..0000000000
Binary files a/Resources/Textures/LobbyScreens/susstation.png and /dev/null differ
diff --git a/Resources/Textures/LobbyScreens/susstation.webp b/Resources/Textures/LobbyScreens/susstation.webp
new file mode 100644
index 0000000000..c30abb4670
Binary files /dev/null and b/Resources/Textures/LobbyScreens/susstation.webp differ
diff --git a/Resources/Textures/LobbyScreens/susstation.png.yml b/Resources/Textures/LobbyScreens/susstation.webp.yml
similarity index 100%
rename from Resources/Textures/LobbyScreens/susstation.png.yml
rename to Resources/Textures/LobbyScreens/susstation.webp.yml
diff --git a/Resources/Textures/LobbyScreens/warden.png b/Resources/Textures/LobbyScreens/warden.png
deleted file mode 100644
index 925a1a9e8a..0000000000
Binary files a/Resources/Textures/LobbyScreens/warden.png and /dev/null differ
diff --git a/Resources/Textures/LobbyScreens/warden.webp b/Resources/Textures/LobbyScreens/warden.webp
new file mode 100644
index 0000000000..997bd6701c
Binary files /dev/null and b/Resources/Textures/LobbyScreens/warden.webp differ
diff --git a/Resources/Textures/LobbyScreens/warden.png.yml b/Resources/Textures/LobbyScreens/warden.webp.yml
similarity index 100%
rename from Resources/Textures/LobbyScreens/warden.png.yml
rename to Resources/Textures/LobbyScreens/warden.webp.yml