It is very important to keep in mind while doing the SEO for multilingual sites and the best practices are:
One language, one page- Don’t put two separate languages side by side on a single page. Determine the text on a page is in one and only language.
Language-specific URLs- There is no unique necessity for language particular URLs from an absolutely SEO perspective, as Google evidently locates the dialect straight from the substance itself. In spite of the fact that having language particular URLs is a great ease of use practice and helps make administration of your site a little less confounded.
Language indicators in the code- Interestingly Google says it disregards all language indicators in the code, including the quality and assertions.
Character encoding- The point when utilizing non-English characters in URLs, determine your archive encoding is situated to UTF-8. That way URLs holding uncommon non-English characters are legitimately gotten away to utilize the encoding of that character.
Full crawling & indexation- Verify your appropriately interpreted text might be completely indexed and crawled by Google and cross-connect your pages in diverse languages properly.
Automated translations- In the event that you can’t manage the cost of legitimate interpretations and distribute text that is machine-translated, don’t let Google index it. Evidently Google can see immediately translated content as spam because of its low quality.
At the same time, SEO for bilingual websites are as follows:-
The principal thing you have to do is figure out what areas you are focusing on. Next, you have to choose which languages you are going to make accessible to those locales. This is critical, on the grounds that it permits you to lay out the whole extend. After you focus the regions and languages, you have to pick your space or URL structure system. The objectives of the site and who you have to focus through SEO and other coordinated showcasing techniques to achieve those objectives. Top-level realms are a solid pointer to Google, so they could be a great choice. Making the moves to raise a superior multilingual and bilingual procedure for SEO, you are most likely working that same methodology into your other online execution channels.