Gravuj Miklos Henrich

The ‘Change All Users Slug’ plugin is built to help you to change all your user’s slug in “/firstname-lastname/” (lowercase) format. 
It is suggested to have a manually defined “Display Name” instead of having the same “Display Name” as the “Username”. 
If you want to use your username (login) for your user slug, then you don’t need this plugin.

Change All Users Slug

Change all your user's slug in "/firstname-lastname/" (lowercase) format.

sungraizfaryad

Permalinks, as the name suggests, are permanent links to pages or posts, categories or tags on your website, which makes it easier for your visitors and search engines to navigate around your website.
How many times have you closed a website or not bookmarked it because the URL looked fishy? Plenty of times, isn’t it? There is something about long URLs with weird numbers and characters that make you not want to look at them. Custom Permalinks can change that notion. WordPress can create short, clear, simple, and to-the-point permalinks so that your URLs look professional along with your website.
But there is also a limit in WordPress, and that’s when this plugin comes into play. By using this plugin, you can simplify the permalinks further by removing the base slugs.

Remove Taxonomy Url

This is a purpose-oriented plugin that simply removes the taxonomy slugs from URL.

Change All Users Slug vs Remove Taxonomy Url