Bilingual Website SEO in Canada: Technical Guide for English and French Sites

A bilingual English-French website is the standard for Canadian businesses that serve both anglophone and francophone markets. Done correctly, it gives you two sets of SEO opportunities: ranking for English queries in Ontario and across English Canada, and ranking for French queries in Quebec and French-speaking communities elsewhere. Done incorrectly, it creates duplicate content problems that hurt rankings for both versions. This guide covers the technical implementation.

URL structure: the foundation of bilingual SEO

The first decision is how to structure URLs for the two language versions. Three approaches are common: subdirectory (yourdomain.ca/en/ and yourdomain.ca/fr/), subdomain (en.yourdomain.ca and fr.yourdomain.ca), and separate domains (yourdomain.ca and yourdomain.ca with a French-specific domain like yourdomain.qc.ca). Google treats all three as legitimate approaches. Subdirectory is the most practical for most Canadian businesses: it keeps all the domain authority in one place, is easier to manage from a single server, and works well with WordPress multilingual plugins like Polylang or WPML. The Gotekky website uses subdirectory structure (/fr/ prefix for French content), which is the most common approach for Canadian bilingual sites hosted on a single server.

Regardless of which structure you choose, each language version should have its own unique URL. Do not serve different language content on the same URL based on browser language settings. Google sees one version of the page per URL and cannot distinguish language-based server-side switching. Use separate URLs for each language version and link between them explicitly.

Hreflang: telling search engines which page serves which audience

Hreflang is an HTML attribute in the page head that tells search engines the language and regional targeting of a page and the relationship between language alternates. For a Canadian bilingual site, you need hreflang annotations on every page that has a counterpart in the other language. The correct implementation for a Canadian bilingual site uses en-CA and fr-CA as the language codes rather than just en and fr. This signals that the English version targets Canadian English speakers and the French version targets Canadian French speakers, which helps Google serve the right version in the right regional context.

Each page needs hreflang annotations pointing at itself and at all its alternates. The English version of a page includes a self-referencing hreflang of en-CA and a reference to the French alternate with fr-CA. The French version includes a self-referencing fr-CA and a reference to the English alternate with en-CA. Both versions should also include an x-default annotation pointing to the English version (or whichever version you want shown to users outside both Canada English and Canada French contexts). The annotations must be bidirectional: if page A points to page B as its alternate, page B must point back to page A. One-directional hreflang annotations are ignored by Google.

Implementing hreflang in the HTML head vs the sitemap

Hreflang can be implemented in three places: the HTML head of each page, HTTP headers, or the XML sitemap. For most Canadian WordPress sites, the HTML head approach is the most reliable because it is directly tied to the page content. Adding hreflang in the XML sitemap works but is considered less reliable by Google than in-page annotations because the sitemap can go out of sync with the actual pages. Gotekky's approach uses both: in-page hreflang annotations generated dynamically based on the page language, and sitemap entries with hreflang alternate links for the complete URL inventory.

Canonical tags and avoiding duplicate content

Every page should have a canonical tag pointing to its own URL. The canonical tag tells search engines that this URL is the preferred version of this content. Without canonical tags, if multiple URLs serve the same or similar content (for example, if your site can be reached with and without www, or with and without a trailing slash), search engines may consolidate the ranking signals into one version but choose a different one than you intend. Combined with hreflang, canonical tags create a clean signal: this URL is canonical for this language version, and here are the alternates in other languages.

Never point the canonical of one language version at the other language version. The English page's canonical should be the English URL, and the French page's canonical should be the French URL. Pointing both canonicals at the same URL while using hreflang to distinguish languages creates a conflicting signal that Google resolves unpredictably.

Language detection and the redirect question

Server-side language detection (redirecting users based on Accept-Language headers) is convenient but has SEO implications. Google's crawlers typically send Accept-Language: en-US and will therefore be redirected to the English version if you redirect based on this header, making the French version harder for Google to discover and index. If you use server-side language detection, ensure that both language versions are discoverable via explicit internal links and your sitemap regardless of what the redirect logic does for browser traffic. Store the user's language preference in a cookie so they are not repeatedly redirected against their explicit choice.