Guide

A bilingual website that search engines, and people, understand.

In Hong Kong many customers search in English, many in Traditional Chinese, and some switch between the two. A bilingual site serves both, but only if it is built so that search engines can tell the versions apart. This guide covers the essentials, and what we do on this website as a working example.

Key takeaways

Give each language its own web address, rather than swapping text on one page.
Link the versions with hreflang tags so search engines show the right one.
Write each page properly in each language; do not rely on raw machine translation.
Translate the titles and descriptions too — they are what people see in search results.
Search engines make no promises. Good structure helps; it does not guarantee rankings.

Start with the right URL structure

Search engines index addresses, not text that appears after a button is pressed. If switching language only changes text on the same URL, the other language may never be indexed. Better options:

A folder per language, such as example.com/ and example.com/zh-hk/. Simple to run and to analyse. This is what this site uses.
A subdomain per language, such as zh.example.com. Workable, slightly more to manage.
A separate domain per language. Usually only for distinct brands or markets.

For most Hong Kong businesses, a language folder is the sensible default.

Tell search engines how the versions relate

Each page should say which other-language page is its equivalent. This is done with hreflang annotations in the page's head. Every version lists all versions, including itself, and pairs must point to each other. Typical codes are en-HK for English in Hong Kong and zh-Hant-HK for Traditional Chinese in Hong Kong, plus an x-default for visitors who match neither.

Each page should also carry a canonical tag pointing to its own address. This tells search engines which URL is the main one, and avoids the English and Chinese pages being treated as duplicates of each other.

Mistakes here are common: one-way links, wrong codes or a canonical pointing to the other language. A check across the whole site is worth doing after launch.

Write for each audience

Translate meaning, not words. Good Chinese copy usually is not a sentence-by-sentence copy of the English. Adapt examples, tone and calls to action.
Use Traditional Chinese for Hong Kong, with the terms local readers use. Have a native reader review the result.
Research keywords per language. People do not search for the translation of an English phrase; they search for what they naturally say. Hong Kong readers may also mix English terms within Chinese queries.
Translate the metadata. Page titles, descriptions, image descriptions and link text should all exist in each language.
Avoid automatic redirects by browser language. They can trap visitors and block search engines. Offer a visible language switcher instead.

Technical details that matter

Declare the language on each page's HTML so browsers and screen readers handle it properly.
Use fonts that render Chinese well, with sensible fallbacks, and check line height and spacing for Chinese text.
List both versions in the sitemap. It helps discovery.
Keep navigation and footer in the matching language, and link to the same-language pages.
Share previews: set language-specific titles and images for when links are shared on social media and messaging apps.

Common mistakes

One URL that changes language with a script, so the second language is invisible to search.
Copying the English metadata onto the Chinese pages.
Leaving some pages translated and others not, with links that jump between languages unexpectedly.
Machine-translated text published without review.
Chinese pages that are slower, or break on phones, because the layout was only tested in English.

How this site does it

This website serves English at the root and Traditional Chinese under /zh-hk/. Each page has a self-referencing canonical and matching hreflang tags in both directions, titles and descriptions are written separately for each language, and a language switcher is always visible. The Chinese content is written in Traditional Chinese for Hong Kong; we do not claim it has been reviewed by a native editor, and say so on the site.

Frequently asked questions

Do I need Simplified Chinese too?

Only if you serve mainland audiences. Hong Kong readers expect Traditional Chinese. Simplified can be added later as a third version.

Can I translate with a plugin and be done?

Automatic translation is a starting point, not a finish. Quality, tone and local terms matter, and unreviewed text can harm trust and rankings.

How long until the Chinese pages appear in search?

It varies and cannot be promised. Correct structure, a sitemap and useful content give the best chance; results take weeks or months.

Planning a bilingual website?

Tell us your audience and languages. We will propose a structure that works for visitors and search engines.

Request a project quote