diff --git a/.git-blame-ignore-revs b/.git-blame-ignore-revs
new file mode 100644
index 00000000..f9da54f6
--- /dev/null
+++ b/.git-blame-ignore-revs
@@ -0,0 +1,2 @@
+# Format JS, YAML, and CSS
+a9407c93d28d6d244c0d4c108b2ccc19d28201d1
\ No newline at end of file
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 92dd2ce5..4e4a27bb 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -21,6 +21,10 @@ repos:
       - id: check-yaml
   - repo: local
     hooks:
+      - id: prettier-format
+        name: Format JS, YAML, and CSS
+        entry: "bash -c '(yarn prettier --config .prettierrc --write . ) || exit 1'"
+        language: system
       - id: compile-js
         name: Update JS build
         entry: "bash -c '( yarn run build && git add dlgr/griduniverse/static/scripts/dist ) || exit 1'"
diff --git a/.prettierignore b/.prettierignore
new file mode 100644
index 00000000..21843ce6
--- /dev/null
+++ b/.prettierignore
@@ -0,0 +1,8 @@
+*.html
+node_modules
+htmlcov
+docs
+build
+**/util/*
+**/dist/*
+**/reconnecting-websocket.js
\ No newline at end of file
diff --git a/.prettierrc b/.prettierrc
new file mode 100644
index 00000000..c603d1ab
--- /dev/null
+++ b/.prettierrc
@@ -0,0 +1,11 @@
+{
+  "tabWidth": 2,
+  "overrides": [
+    {
+      "files": "*.css",
+      "options": {
+        "tabWidth": 4
+      }
+    }
+  ]
+}
diff --git a/package.json b/package.json
index febc596c..935e8859 100644
--- a/package.json
+++ b/package.json
@@ -19,6 +19,7 @@
   "devDependencies": {
     "browser-sync": "<2.19.0",
     "browser-sync-webpack-plugin": "^2.3.0",
+    "prettier": "3.2.5",
     "uglify-es": "^3.0.28",
     "webpack": "^2.4.1"
   },
diff --git a/yarn.lock b/yarn.lock
index 7911766e..82f53ebd 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2594,6 +2594,11 @@ preserve@^0.2.0:
   resolved "https://registry.yarnpkg.com/preserve/-/preserve-0.2.0.tgz#815ed1f6ebc65926f865b310c0713bcb3315ce4b"
   integrity sha512-s/46sYeylUfHNjI+sA/78FAHlmIuKqI9wNnzEOGehAlUUYeObv5C2mOinXBjyUyWmJ2SfcS2/ydApH4hTF4WXQ==
 
+prettier@3.2.5:
+  version "3.2.5"
+  resolved "https://registry.yarnpkg.com/prettier/-/prettier-3.2.5.tgz#e52bc3090586e824964a8813b09aba6233b28368"
+  integrity sha512-3/GWa9aOC0YeD7LUfvOG2NiDyhOWRvt1k+rcKhOuYnMY24iiCphgneUfJDyFXd6rZCAnuLBv6UeAULtrhT/F4A==
+
 process-nextick-args@~2.0.0:
   version "2.0.1"
   resolved "https://registry.yarnpkg.com/process-nextick-args/-/process-nextick-args-2.0.1.tgz#7820d9b16120cc55ca9ae7792680ae7dba6d7fe2"