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.

Ko Takagi

Simple Slug Translate can translate the post, page, category and taxonomy slugs to English automatically.
It can make the permalink looks more better, and also may be good for SEO.
The translation engine is powered by <a href="https://www.ibm.com/watson/services/language-translator/" rel="nofollow ugc">Watson Language Translator</a>. Thanks to that support the following languages:
<ul>
<li>Arabic</li>
<li>Bulgarian</li>
<li>Bengali</li>
<li>Czech</li>
<li>Danish</li>
<li>German</li>
<li>Greek</li>
<li>English</li>
<li>Spanish</li>
<li>Finnish</li>
<li>French</li>
<li>Gujarati</li>
<li>Hebrew</li>
<li>Hindi</li>
<li>Hungarian</li>
<li>Italian</li>
<li>Japanese</li>
<li>Korean</li>
<li>Latvian</li>
<li>Malayalam</li>
<li>Norwegian Bokmal</li>
<li>Nepali</li>
<li>Dutch</li>
<li>Polish</li>
<li>Portuguese</li>
<li>Romanian</li>
<li>Russian</li>
<li>Sinhala</li>
<li>Slovakian</li>
<li>Slovenian</li>
<li>Serbian</li>
<li>Swedish</li>
<li>Thai</li>
<li>Turkish</li>
<li>Ukrainian</li>
<li>Urdu</li>
<li>Vietnamese</li>
<li>Simplified Chinese</li>
<li>Traditional Chinese</li>
</ul>
In order to use the service, you can apply for an <a href="https://www.ibm.com/cloud/lite-account" rel="nofollow ugc">IBM Cloud Lite</a> account and get your own API key of Watson Language Translator. For free plan, you can translate up to 1,000,000 characters per month.
<h3>Related Links</h3>
<ul>
<li><a href="https://github.com/ko31/simple-slug-translate" rel="nofollow ugc">Github</a></li>
<li><a href="https://github.com/ko31/simple-slug-translate/wiki/Documentation" rel="nofollow ugc">Documentation(English)</a></li>
<li><a href="https://github.com/ko31/simple-slug-translate/wiki/%E3%83%89%E3%82%AD%E3%83%A5%E3%83%A1%E3%83%B3%E3%83%88" rel="nofollow ugc">Documentation(Japanese)</a></li>
</ul>

Simple Slug Translate

Simple and convenient plugin!
The documentation is polite and easy to understand.
Ideally, I would like choose a translation API.


Convenient!

It is a handy and easy-to-use plugin. Thank you for making such a useful plugin!

Handy and easy-to-use plugin

Simple Slug Translate can translate the post, page, category and taxonomy slugs to English automatically.

Slug-Free Permalinks – Simple ID-Based URLs vs Simple Slug Translate