diff --git a/media/os_development.PNG b/media/os_development.PNG
index 5bd52790..6f2bd861 100644
Binary files a/media/os_development.PNG and b/media/os_development.PNG differ
diff --git a/media/os_production.PNG b/media/os_production.PNG
index d15fbbdb..4ee4e9a9 100644
Binary files a/media/os_production.PNG and b/media/os_production.PNG differ
diff --git a/media/php_versions.PNG b/media/php_versions.PNG
index 98416fe8..b241f3a3 100644
Binary files a/media/php_versions.PNG and b/media/php_versions.PNG differ
diff --git a/media/sql_server.PNG b/media/sql_server.PNG
index 938f30b7..25224fe2 100644
Binary files a/media/sql_server.PNG and b/media/sql_server.PNG differ