SiMULA

A WordPress plugin developed by <a href="https://simulalab.org" rel="nofollow ugc">Simula Lab Ltd</a> that helps users to automatically generate URL-friendly slugs for Arabic content by transliteration, “3arabizi,” machine translation, or leave unchanged—perfect for social media sharing and SEO. 
The plugin is also available to download from the official wordpress plugins directory here: https://wordpress.org/plugins/simula-friendly-slugs-for-arabic-sites
It supports generating slugs:
<ul>
<li>Transliteration (using PHP/ICU)</li>
<li>3arabizi</li>
<li>Hash (from the Arabic title)</li>
<li>Translation (using an external translation service provider such as Google Translate API)</li>
</ul>
After installing and activating the plugin, navigate to the “Settings” menu in the Admin Dashboard and select “Friendly slugs”.
The plugin has no effect on non-Arabic post titles.
<h3>External services</h3>
This plugin can optionally call an external translation service API when “Translation” mode is selected.
When “Translation” mode is selected, the plugin will send your post’s title text to a configured external translation API endpoint (for example, Google Cloud Translation API v2 at https://translation.googleapis.com/language/translate/v2). No other data is transmitted.
If you have not provided valid credentials (for example API Key) for the service provider under Settings -> Friendly Slugs, the plugin falls back to a server-side hash of the original title and makes no external calls.
You are responsible for obtaining and configuring an API key or other credentials for the selected service provider, and for complying with that provider’s terms of service and privacy policy (for Google Cloud Translation, see https://cloud.google.com/translate/terms and https://policies.google.com/privacy).
All other slug-generation methods (transliteration, 3arabizi, hash) run entirely on the host without contacting any third-party service.

Simula Friendly Slugs for Arabic Sites

Automatically generate friendly slugs for posts/pages with Arabic titles via transliteration, 3arabizi or translation.

waheeds

You may through this plugin to change your font in your arabic Web site using a modern fonts Devina Web Font Service
A few notes about the sections above:
<ul>
<li>with out change any thing or write code in theme</li>
<li>just choose font and save option</li>
<li>fonts are hosted by maxcdn and files will dont lose or be offline</li>
<li>you can preview font after select</li>
<li>tetsed up to wordpress 4.1</li>
</ul>

RH Devnia Webfonts

this plugin is change your body font with devnia web fonts service if yout site was in arabic language.

Simula Friendly Slugs for Arabic Sites vs RH Devnia Webfonts