malaiac

This plugin allows you to use DeepL translation API to translate posts ( and pages ) right from your WordPress Admin. 
Adds a translate button to the edit post page. 
Shows current and remaining API usage.
This plugin requires an active DeepL API subscription with access to the API. 
Please note that DeepL User or Teams plans do NOT include API access. 
You have to get a <a href="https://www.deepl.com/fr/pro/change-plan#developer" rel="nofollow ugc">“DeepL Developer” plan</a> (both ‘DeepL API Free’ and ‘DeepL API Pro’ work with this plugin)
Want to translate Products, meta fields, or translate in batches ? 
Get the <a href="https://solutions.fluenx.com/en/produit/batch-deepl-translation-for-wordpress-posts/" rel="nofollow ugc">DeepL Pro API plugin</a>
Please note : the free and the premium version works the same relative to content editors ( Elementor, Blocks, etc.). You’re free to test this plugin on your website to see if your specific configuration works well with the plugin. We cannot guarantee that all content editors work perfectly with the DeepL API so please test this plugin before buying the premium (you’ll need the premium only if you need extended features like meta translations and batch translations)

DeepL API translation plugin

I have tested the plugin about 1-2 years ago and a lot has changed since then: By now it works absolutely stable for the translations of our content, which are created with the block editor. You can set the languages beforehand and also correct the translations manually. We use this plugin now on several websites in combination with WPML. 

Important: You need a DeepL developer API (the personal DeepL license does not work) and you should have a close look at the error log if something does not work. A setup wizard would be recommendable here!

Good slim tool

Get DeepL translation magic right into your WordPress Admin

Are you welcoming visitors from different countries on your site and don’t know how to serve all of them the best possible reading experience? Then just give Lingo a spin and you won’t regret it.
A the best of it: You don’t need to even think about accomplishing this, the plugin does all of that work for you. The only thing you need to do is provide a translated version of each post you would like to show in multiple languages and there you go: Everything works right out of the box. There’s no need for configuring – it just works.
<h4>Functionality</h4>
The plugin provides you with a clean, simple workflow on how to create translations. After you’ve chosen a specific post which you want to translate, you just need to click ‘Translate’ on the post overview. Then Lingo will create a complete copy of the post and assign it a special post type so that it’s completely isolated from normal posts.
After that, you’ll see an edit screen that looks nearly exactly like the one for your original post. You can use the WYSIWYG-Editor, all types of metaboxes and so on. After providing a translation you just need to pick the suitable language and hit ‘Save’.
<blockquote>
Support for <a href="http://www.advancedcustomfields.com" rel="nofollow ugc">Advanced Custom Fields</a> will soon be added.
</blockquote>
<h4>Supported Languages</h4>
Lingo currently makes use of all languages that are available on the ‘Site Language’ select-field in the admin area of your site (‘Settings’ > ‘General’ > ‘Site Language’ ). But don’t get me wrong: It doesn’t matter how many languages are installed on your site, Lingo works with all of them anyway.

Lingo

Show customized translations of your posts or pages for visitors from other nations.

DeepL API translation plugin vs Lingo