diff --git a/back/.prettierignore b/back/.prettierignore
new file mode 100644
index 00000000..1f453464
--- /dev/null
+++ b/back/.prettierignore
@@ -0,0 +1 @@
+src/Messages/generated
diff --git a/back/.prettierrc.json b/back/.prettierrc.json
new file mode 100644
index 00000000..5fcd8a70
--- /dev/null
+++ b/back/.prettierrc.json
@@ -0,0 +1,3 @@
+{
+  "tabWidth": 4
+}
diff --git a/back/package.json b/back/package.json
index a6ff7319..5df9e48e 100644
--- a/back/package.json
+++ b/back/package.json
@@ -11,7 +11,9 @@
     "profile": "tsc && node --prof ./dist/server.js",
     "test": "ts-node node_modules/jasmine/bin/jasmine --config=jasmine.json",
     "lint": "node_modules/.bin/eslint src/ . --ext .ts",
-    "fix": "node_modules/.bin/eslint --fix src/ . --ext .ts"
+    "fix": "node_modules/.bin/eslint --fix src/ . --ext .ts",
+    "pretty": "yarn prettier --write src/",
+    "pretty-check": "yarn prettier --check src/"
   },
   "repository": {
     "type": "git",
@@ -66,6 +68,7 @@
     "@typescript-eslint/parser": "^2.26.0",
     "eslint": "^6.8.0",
     "jasmine": "^3.5.0",
+    "prettier": "^2.3.1",
     "ts-node-dev": "^1.0.0-pre.44",
     "typescript": "^3.8.3"
   }
diff --git a/back/yarn.lock b/back/yarn.lock
index 3ac4b0a8..813e0f8e 100644
--- a/back/yarn.lock
+++ b/back/yarn.lock
@@ -2039,6 +2039,11 @@ prelude-ls@~1.1.2:
   resolved "https://registry.yarnpkg.com/prelude-ls/-/prelude-ls-1.1.2.tgz#21932a549f5e52ffd9a827f570e04be62a97da54"
   integrity sha1-IZMqVJ9eUv/ZqCf1cOBL5iqX2lQ=
 
+prettier@^2.3.1:
+  version "2.3.1"
+  resolved "https://registry.yarnpkg.com/prettier/-/prettier-2.3.1.tgz#76903c3f8c4449bc9ac597acefa24dc5ad4cbea6"
+  integrity sha512-p+vNbgpLjif/+D+DwAZAbndtRrR0md0MwfmOVN9N+2RgyACMT+7tfaRnT+WDPkqnuVwleyuBIG2XBxKDme3hPA==
+
 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"
diff --git a/front/.prettierignore b/front/.prettierignore
index d7d4e5c0..1f453464 100644
--- a/front/.prettierignore
+++ b/front/.prettierignore
@@ -1 +1 @@
-src/Messages
+src/Messages/generated
diff --git a/pusher/.prettierignore b/pusher/.prettierignore
new file mode 100644
index 00000000..1f453464
--- /dev/null
+++ b/pusher/.prettierignore
@@ -0,0 +1 @@
+src/Messages/generated
diff --git a/pusher/.prettierrc.json b/pusher/.prettierrc.json
new file mode 100644
index 00000000..5fcd8a70
--- /dev/null
+++ b/pusher/.prettierrc.json
@@ -0,0 +1,3 @@
+{
+  "tabWidth": 4
+}
diff --git a/pusher/package.json b/pusher/package.json
index 63188032..3417f2c1 100644
--- a/pusher/package.json
+++ b/pusher/package.json
@@ -11,7 +11,9 @@
     "profile": "tsc && node --prof ./dist/server.js",
     "test": "ts-node node_modules/jasmine/bin/jasmine --config=jasmine.json",
     "lint": "DEBUG= node_modules/.bin/eslint src/ . --ext .ts",
-    "fix": "DEBUG= node_modules/.bin/eslint --fix src/ . --ext .ts"
+    "fix": "DEBUG= node_modules/.bin/eslint --fix src/ . --ext .ts",
+    "pretty": "yarn prettier --write src/",
+    "pretty-check": "yarn prettier --check src/"
   },
   "repository": {
     "type": "git",
@@ -65,6 +67,7 @@
     "@typescript-eslint/parser": "^2.26.0",
     "eslint": "^6.8.0",
     "jasmine": "^3.5.0",
+    "prettier": "^2.3.1",
     "ts-node-dev": "^1.0.0-pre.44",
     "typescript": "^3.8.3"
   }
diff --git a/pusher/yarn.lock b/pusher/yarn.lock
index 88a20475..6657c0a8 100644
--- a/pusher/yarn.lock
+++ b/pusher/yarn.lock
@@ -2039,6 +2039,11 @@ prelude-ls@~1.1.2:
   resolved "https://registry.yarnpkg.com/prelude-ls/-/prelude-ls-1.1.2.tgz#21932a549f5e52ffd9a827f570e04be62a97da54"
   integrity sha1-IZMqVJ9eUv/ZqCf1cOBL5iqX2lQ=
 
+prettier@^2.3.1:
+  version "2.3.1"
+  resolved "https://registry.yarnpkg.com/prettier/-/prettier-2.3.1.tgz#76903c3f8c4449bc9ac597acefa24dc5ad4cbea6"
+  integrity sha512-p+vNbgpLjif/+D+DwAZAbndtRrR0md0MwfmOVN9N+2RgyACMT+7tfaRnT+WDPkqnuVwleyuBIG2XBxKDme3hPA==
+
 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"