These slides are from a presentation given at the International Search Summit Barcelona 2024. In today's globalised landscape, catering to international audiences is crucial for online success. Language selectors play a pivotal role in ensuring that your website effectively reaches a wide array of users. In these slides, Sara Fernández Carmona, an International SEO Consultant, addresses questions such as how language selectors work, how many types exist, and which one is best suited to your website. She discusses not only SEO but also critical UX/UI considerations, usability and accessibility.