Kodo

Slug-Free Permalinks lets you switch selected post types and taxonomies to simple ID-based permalink formats.
You can choose between:
<ul>
<li><code>/post/123/</code></li>
<li><code>/post-123/</code></li>
</ul>
The plugin only affects the post types and taxonomies you enable in the settings screen.
Features:
<ul>
<li>Select individual public post types</li>
<li>Select individual public taxonomies</li>
<li>Choose slash or hyphen based ID permalink format</li>
<li>Optionally redirect legacy slug URLs to the current ID-based permalink when WordPress can resolve the request</li>
<li>Preserve prefixed permalink bases such as <code>/en/</code> when another plugin adds them</li>
<li>Flush rewrite rules automatically when settings change</li>
</ul>
This plugin is focused on permalink structure only. It does not add content features or front-end UI.
Plugin page (English): https://happas.jp/en/slug-free-permalinks/ 
Plugin page (Japanese): https://happas.jp/slug-free-permalinks/
Development repository: https://github.com/1008k/slug-free-permalinks
This plugin is best suited to new sites, sites still defining their permalink policy, or structured-content use cases where slug management is unnecessary.
If your site already has a large number of published posts and established slug based URLs, review the impact carefully before enabling it. Check existing inbound links, search traffic, social shares, and editorial workflow assumptions.
Known limitations:
<ul>
<li>If a post type slug and taxonomy slug are identical, their ID-based rewrite patterns can conflict.</li>
</ul>

Slug-Free Permalinks – Simple ID-Based URLs

Use ID-based permalinks for selected post types and taxonomies without managing slugs.

Themeisle

Creativemotion

Alexander Kovalev

webcraftic

Cyrlitera converts Cyrillic and Georgian URLs and file names to Latin. It works for all post types, pages, and terms. It gives you options to define your own custom characters and enable automatic redirects.
<h3>How It Works</h3>
Transliteration is the process of converting characters from one writing system to another, such as converting Cyrillic symbols to Latin. Because most web software and URLs are designed around Latin characters, using Cyrillic or other non-Latin symbols in links or file names can lead to unreadable URLs, accessibility issues, and even broken links. Transliteration ensures your URLs and file names remain clean, readable, and compatible across all platforms.
Cyrlitera automatically replaces Cyrillic and Georgian characters with Latin equivalents to create clean and readable URLs for posts, categories, taxonomies, products, and custom post types. It also fixes incorrect file names by removing unsafe characters and transliterating them during upload, helping prevent 404 errors and broken media links.
<h3>Examples</h3>
Cyrillic URL before transliteration:
<pre><code>https://example.com/%D0%BF%D1%80%D0%B8%D0%B2%D0%B5%D1%82-%D0%BC%D0%B8%D1%80
</code></pre>
Same URL transliterated to Latin:
<pre><code>https://example.com/privet-mir
</code></pre>
Incorrect file names before transliteration:
<pre><code>%D0%BC%D0%BE%D0%B5_image_290.jpg
A+nice+picture.png
</code></pre>
Readable transliterated file names:
<pre><code>moe_image_290.jpg
a-nice-picture.png
</code></pre>
By using Latin-based file names and URLs, you avoid issues with encoding, broken links, and unreadable paths. This plugin performs the transliteration automatically each time a file is uploaded, ensuring your media library stays clean and consistent.
<h3>Features</h3>
<ul>
<li>Automatically transliterates all new permalinks for posts, pages, categories, tags, and custom post types.</li>
<li>Automatically transliterates all new attachment file names on upload, with an option to convert them to lowercase.</li>
<li>Creates automatic redirects from old URLs to new transliterated ones to prevent broken links.</li>
<li>Supports multiple alphabets, including Russian, Belarusian, Ukrainian, Bulgarian, and Georgian.</li>
<li>Fully customizable character mapping – define your own characters and their Latin substitutions to support any language.</li>
<li>Preserves original permalinks, keeping old URLs intact so nothing is lost during conversion.</li>
<li>Optional conversion of existing slugs, allowing you to transliterate existing URLs.</li>
<li>Rollback tool that lets you restore original URLs if needed.</li>
</ul>
<h3>Support</h3>
We’re here to help. Feel free to open a new thread on the [Support Forum] (https://wordpress.org/support/plugin/cyrlitera/).
<h3>Useful Resources</h3>
<ul>
<li>If you like this plugin, you’re sure to love <a href="https://themeisle.com/wordpress-plugins/" rel="nofollow ugc">our other plugins</a> as well.</li>
<li>Our blog is a great place to <a href="https://themeisle.com/blog/" rel="nofollow ugc">learn more about WordPress</a>.</li>
<li>Get the most out of your website with our helpful <a href="https://youtube.com/playlist?list=PLmRasCVwuvpSep2MOsIoE0ncO9JE3FcKP" rel="nofollow ugc">WordPress YouTube Tutorials</a>.</li>
</ul>

Cyrlitera – Transliteration of Links and File Names


If you including an AD you should also include a button or some other way to disable it. 


Beware of ADs

Convert Cyrillic and Georgian URLs and file names to Latin. Works for all post types, pages, and terms. Custom characters, URL redirects & more.

Slug-Free Permalinks – Simple ID-Based URLs vs Cyrlitera – Transliteration of Links and File Names