Did you know that you can use All in One SEO on multi-language sites using WPML?
Using All in One SEO and WPML (WordPress Multilingual), you can optimize your multilingual website to rank higher in other languages, and get more traffic from countries around the world.
In this guide, we'll cover how to translate your All in One SEO fields, like titles and meta descriptions, using WPML.
After installing WPML and completing the setup, go to WPML > Translation Dashboard and select the content you want to translate. WPML translates SEO fields along with the rest of your on-page content, so simply select the items you want to translate and move to Step Two: choosing a translation method.

To get the best translations, we recommend translating automatically using WPML’s most accurate AI translator – Private Translation Cloud (PTC).
PTC is like your own team of expert translators with a deep understanding of your content and niche. It’s WPML’s proprietary AI technology, and even includes a translation quality guarantee: If you’re not satisfied with PTC’s translations, you’ll get a full refund for this service from WPML.

According to the WPML team, PTC can create translations better than professional translators.
That said, if at any moment you want to edit translations, you can always make changes using the Advanced Translation Editor.

Just visit the translated page you want to edit on the front-end, and click Edit translation in the top admin bar. This will open the editor, where you can make any necessary changes.
When done translating, your All in One SEO fields will appear translated on the front-end and in the source code.