unalignedcoder

This plugin gives you the ability to automatically generate a title for your post, when upon publishing no title has been given.
<ul>
<li>The title is generated by the first sentence of the post;</li>
<li>Few simple settings on a dedicated page will allow you to specify the criteria for this to happen (see <a href="https://wordpress.org/extend/plugins/autotitle-for-wordpress/screenshots/" rel="ugc">screenshot</a>);</li>
<li>It naturally influences what the permalink will be like (if you use <code>%postname%</code> in it);</li>
<li>You can decide to generate a title also when editing a post, again if the title is deliberately left empty.</li>
</ul>
This plugin is a must if you use WordPress posting content in one click and not looking back, and, in general, if you do not want –or care– to give titles to your posts, but you want the post permalinks to be a little more meaningful than just numbers.

Autotitle for WordPress

Generates a title upon publishing a post, if no title is given. Optionally works when editing posts as well. It is a must when posting in a hurry.

Dimitris Mavroudis

AutoConvert Greeklish Permalinks converts greek characters to latin in all permalinks. The plugin makes sure that every new permalink is in greeklish and offers the option to convert all the old links with greek characters to latin.
<h3>Features</h3>
<ul>
<li>Convert automaticly the permalink of every new post and term.</li>
<li>Convert all your older posts and terms with a click of a button.</li>
<li>Choose how dipthongs are converted. </li>
<li>Developed to be friendly to developers with WP-CLI support and filter to modify the converion.</li>
</ul>

AutoConvert Greeklish Permalinks

Thank you for sharing this plugin. It works very nice both using the classic WordPress Dashboard as well with the Rest API.

Very good plugin.

I was ready to "reinvent the wheel" but just then i found this plugin

Does exactly what it says

Convert Greek characters to Latin on all your site's permalinks instantly.

Autotitle for WordPress vs AutoConvert Greeklish Permalinks