Multilingual Website Belgium

If you want, as a Flemish B2B company, to tap into the French-speaking market in Belgium, do not start by translating your entire website, but with a level-headed business case and a handful of pages that are closest to a new customer. The French-speaking market (Wallonia and Brussels) is roughly as large as the Flemish one, but you only win revenue there once you replace translation with real localisation and once your French-language follow-up is ready. This article shows how to build the growth case, which pages to tackle first, how to set up the technical side correctly and which pitfalls Flemish companies invariably run into. A multilingual website in Belgium is a project in its own right, not a quick menu option.

Is it worth entering the French-speaking market?

It is only worth it when there is demonstrable demand for what you sell on the other side of the language border, and when you can follow up on that demand in French. The size of the market is not in itself a reason to start. The right question is not “how many French speakers are there”, but “how many of my ideal customers are in Wallonia or Brussels, and what is a customer there worth on average?”.

Make that calculation explicit before you spend a single euro. How many companies in your target group are located south of the language border? What is your average deal value, and how many deals would a French-language presence realistically generate in year one? Set the costs against that: translation, technical setup, and above all the recurring effort of attending to French-speaking leads. If that follow-up is not there, a French-language site produces frustration instead of customers. At Customer Impact we steer on leads and revenue, not on the number of little flags in your menu, so an honest outcome can also be “not yet, or not like this”.

How large is the French-speaking market really?

The French-speaking community makes up around 40% of the Belgian population, compared with around 60% Dutch-speaking. Concretely, Wallonia counts roughly 3.7 million inhabitants and the Brussels-Capital Region around 1.25 million, where French is the main or secondary language in a large majority of households. In B2B terms, that means a substantial number of companies, decision-makers and tenders that you probably do not reach today with a Dutch-only site.

Important nuance: the market is large, but also competitive and culturally distinct. A French-speaking buyer does not expect “a Flemish site with French words”, but a supplier who speaks their language and context. The size of the market is therefore the reason to take the exercise seriously, not to underestimate it.

Where do you start: translating or localising?

Start with localising, not with translating, because a literal translation is the fastest way to lose trust. Translating is converting words; localising is making your message fit for another market. That difference determines whether your site comes across as a local player or as an outsider who does not know the region.

Localising touches more than text. Think of references and cases from Wallonia or Brussels, French-language testimonials, local phone numbers and contact persons, and examples that are recognisable to a French-speaking reader. The tone may also differ: French-language B2B communication is usually somewhat more formal. So have your texts written or reworked by a native speaker who understands your field, not by a machine translation that you then lightly touch up. The same principles of conversion-focused copywriting apply in French, only the execution has to be done by someone who thinks in that language. Because building trust on a B2B website does not succeed with text that sits just off the market.

Which pages do you tackle first?

Tackle first the pages that are closest to a lead, not your entire site. The mistake most companies make is wanting to translate everything at once, which makes the project too big, too expensive and too slow, and which ultimately ends up half done. A phased approach delivers results faster and keeps the cost manageable.

A sensible starter set usually looks like this:

Your homepage, because it sets the tone and immediately proves that you take the French-speaking visitor seriously.
Your strongest service page or a targeted landing page, tied to the offering for which there is the most demand in Wallonia and Brussels.
Your contact page, with French-language follow-up, the right phone number and a form that confirms in French.
One or two pieces of proof, such as a French-language case or testimonial that shows you also deliver south of the language border.

With this core you can attract and follow up French-speaking leads without having to translate your entire content library. If it works, you expand in a targeted way based on what the figures tell you. How to make choices about your site starting from your growth goal, you can read about more broadly in our guide on having a B2B website built.

How do you set it up technically without harming your rankings?

Set the language structure and the signals for Google up correctly from day one, otherwise your Dutch and French versions will compete against each other instead of reinforcing each other. Two language versions of the same page can be seen by a search engine as near-duplicates if you do not make clear which version is intended for which audience.

In practice, it comes down to a few choices. You choose a clean URL structure that separates language, for example a folder per language (/nl/ and /fr/). You indicate with hreflang tags which version belongs to which audience, with nl-be and fr-be plus an x-default as a safety net. And you make sure each version is self-referential and reciprocally points to the other, because that is precisely where multilingual sites go wrong most often. Also keep your website architecture and internal links consistent per language, so that a French-speaking visitor (and Google) keeps navigating within the French version. For visibility in local results, it helps to support your French-language presence with local SEO, including French-language business listings.

Which platform you use for this is subordinate to the setup. Webflow, WordPress and headless solutions can all handle multilingual, each with its own pros and cons in terms of translation management, maintenance and cost. The right choice depends on your team, your budget and how much content you want to manage in two languages, not on a fixed favourite. If you want this to be guided, then in our web design approach we first look at your growth goal and only then at the technical implementation.

What are the biggest pitfalls?

The biggest pitfall is treating your French-language site as a one-off translation project instead of an ongoing investment. A few recurring mistakes that Flemish B2B companies pay dearly for:

Machine translation as the finished product. A rough automatic translation looks cheap but undermines your credibility with exactly the people you want to convince.
No French-language follow-up. A French form that leads to a Dutch-language phone call or a slow response burns the lead you just won.
Half localisation. Translated service pages but Dutch-language cases, prices or fine print feel unfinished and sow doubt.
Technical sloppiness. Missing or wrong hreflang, mixed language versions and internal links that accidentally jump to the other language confuse both the visitor and the search engine.
No maintenance. Every new Dutch page or campaign calls for a French-language counterpart, otherwise the gap between your two versions grows on its own.

Whoever avoids these pitfalls treats the French-speaking market as it deserves: as a real second market with its own customers, not as a translated appendix.

Frequently asked questions

Do I have to translate my entire website into French? No. Start with the pages that are closest to a lead, such as your homepage, your strongest service or landing page and your contact page. Only expand once the first results justify it.

Is machine translation good enough for a B2B site? As a starting point sometimes, as a finished product rarely. For pages that have to convince and convert, have the text written or thoroughly reworked by a native speaker with domain knowledge.

Does a second language version harm my Google rankings? Not if you set it up correctly. With a clean language structure, hreflang (nl-be, fr-be, x-default) and consistent internal links, your versions reinforce each other instead of competing.

Which platform do I choose for a multilingual site? That depends on your team, budget and amount of content. Webflow, WordPress and headless can all handle multilingual; the best choice follows from your situation, not from a fixed preference.

The short summary

Entering the French-speaking market is a growth opportunity, not a translation task. First build an honest business case around your ideal customer and your deal value in Wallonia and Brussels. Then start small with the pages that generate leads, localise instead of translating literally, set the technical side up correctly from day one and make sure your French-language follow-up is ready. That way your second language version becomes a second sales channel and not a cost item that stays half done. Are you in doubt whether the step pays off for you, or how to phase it most smartly?

Plan your free intake.