How can I translate html files to another language?

Implement internationalization (i18n) using specialized libraries that separate content from structure.The term i18n is an abbreviation for "internationalization" - where "i" and "n" are the first and last letters, and "18" represents the 18 letters in between.

i18n Libraries are software tools designed to help developers internationalize their applications - meaning to prepare them for translation into different languages and adaptation to various regions without engineering changes.

Popular i18n Libraries for translating html files to another language:

1. i18next (JavaScript)

import i18next from 'i18next';

i18next.init({
  lng: 'es',
  resources: {
    en: { translation: { welcome: "Welcome" } },
    es: { translation: { welcome: "Bienvenido" } }
  }
});

console.log(i18next.t('welcome')); // "Bienvenido"

2. react-i18next (React)

import { useTranslation } from 'react-i18next';

function MyComponent() {
  const { t } = useTranslation();
  
  return (
    <div>
      <h1>{t('welcome.title')}</h1>
      <p>{t('welcome.subtitle')}</p>
    </div>
  );
}

i18n libraries are essential for building truly global applications that can seamlessly adapt to different languages, cultures, and regions while maintaining clean, maintainable code. This is one of the best ways to transfer html files to another language.