Login Logo的作者是Mark Jaquith，目前有60,000+个有效安装。已经Tested with 5.4.0版本的wordpress。
This plugin allows you to customize the logo on the WordPress login screen. There is zero configuration. You just drop the logo file into your WordPress content directory, named login-logo.png and this plugin takes over.
Note that you should use a transparent background on the PNG image, crop it tightly (no padding pixels) and use a width of exactly 312 pixels for best results. Wider images will be downscaled in modern browsers, but it isn’t recommended to rely on that.
This plugin also works in the mu-plugins directory.