diff --git a/composer.json b/composer.json
index 320796c8624..0f74869a8be 100644
--- a/composer.json
+++ b/composer.json
@@ -12,22 +12,23 @@
     },
     "require": {
         "php": ">=5.3.0",
-        "ext-gd": "*",
         "ext-curl": "*",
         "restler/framework": "3.0.*"
     },
     "suggest": {
-        "ext-mysqli": "*",
-        "ext-pgsql": "*",
-        "ext-mssql": "*",
-        "ext-pdo_sqlite": "*",
-        "ext-imagick": "*",
-        "ext-mcrypt": "*",
-        "ext-openssl": "*",
-        "ext-mbstring": "*",
-        "ext-soap": "*",
-        "ext-zip": "*",
-        "ext-xml": "*"
+        "ext-mysqlnd": "To use with MySQL or MariaDB",
+        "ext-mysqli": "To use with MySQL or MariaDB",
+        "ext-pgsql": "To use with PostgreSQL",
+        "ext-mssql": "To use with MSSQL (experimental)",
+        "ext-pdo_sqlite": "To use with SQLite (experimental)",
+        "ext-gd": "Image manipulation (Required but maybe built-in PHP)",
+        "ext-imagick": "Image manipulation (TCPDF)",
+        "ext-mcrypt": "(Required but maybe built-in PHP)",
+        "ext-openssl": "Secure connections (Emails, SOAP…)",
+        "ext-mbstring": "Handle non UTF-8 databases",
+        "ext-soap": "Native SOAP",
+        "ext-zip": "ODT and Excel support",
+        "ext-xml": "Excel support"
     },
     "config": {
         "vendor-dir": "htdocs/includes"