WARNING: this is an experimental addon with limited functionality. It’s meant as a demo for developers who might need better control on where TranslatePress gets loaded. It can have unexpected side-effects.
If you’re looking to translate only certain pages simply download and install the “Only translate certain paths” add-on like any other plugin: https://translatepress.com/download/3803/
This addon will allow you to add url paths that can be translated. Every other page on your website that doesn’t match that path will not be translatable.
This will work with the free version of TranslatePress and doesn’t have any drawbacks as far as SEO is concerned.
The settings are found in WordPress Admin -> Settings -> TranslatePress – Only Translate Certain Paths.
Note: This feature doesn’t have support for homepage paths like www.example.com.