Guide

Ottmar J.G. Francisca

April 21, 2026 · 16 min read

International Keyword Research: Boost Global SEO 2026

Figure 1: International keyword research covers language, region, cultural context, and local search engine behaviour — not just translation.

🔍 What Is International Keyword Research?

International keyword research is the foundation of any successful global SEO strategy. Unlike domestic keyword research, which operates within a single language and cultural context, international keyword research requires you to understand how the same topic, product, or service is searched differently across countries, languages, and cultures — and then build a content and hreflang structure that captures each market separately.

The challenge is that direct translation almost never works. Take a simple example: “running shoes” in American English becomes “trainers” in British English and “hardloopschoenen” in Dutch — three different keywords, each with different search volume, different competition levels, and different buyer intent signals. A UK-based keyword strategy applied to the Netherlands market without adaptation will consistently underperform. According to Moz’s 2024 international SEO research, pages that rely on literal translation rather than localised keyword research see 40–60% lower organic traffic from those target markets.

International keyword research also encompasses research into which search engines dominate each market. For European markets like the Netherlands, Belgium, and the UK, Google is dominant — but for China (Baidu), Russia (Yandex), and South Korea (Naver), separate and entirely different keyword research methodologies apply. Businesses in Amsterdam targeting Asian markets must factor this in from the start. For a broader view of how keyword research fits into your overall international SEO strategy, see our complete guide.

“The biggest mistake in international keyword research is assuming that what works in your home market will translate directly. Search behaviour is deeply cultural — the words people use to describe the same product can vary dramatically even between countries that share a language.” — Aleyda Solis, International SEO Consultant, Orainti (International SEO Checklist, 2024)

Pro Tip: Before running keyword research in any new market, identify which search engine dominates that country first. Google’s dominance varies — it holds 95%+ in the Netherlands but under 5% in China. Your entire keyword strategy depends on which engine you’re optimising for.

🌍 International vs. Domestic Keyword Research: Key Differences

Understanding why international keyword research differs from domestic research helps you avoid the most costly mistakes. The differences go far beyond language — they involve search engine market share, cultural intent signals, seasonal patterns, legal content constraints, and local competition landscapes that can completely change which keywords are worth targeting.

Figure 2: Domestic keyword research operates in one market context. International keyword research multiplies that complexity by every target country.

The Five Core Differences

“International keyword research is not just about translating keywords — it’s about understanding the mental model of your target audience in each market. A German user searching for ‘Treuekarte’ is not making the same search as a UK user searching for ‘loyalty card’, even though the product is identical.” — Kevin Indig, Growth Advisor, ex-Shopify and G2 (International SEO Framework, 2023)

The German loyalty card example is a well-documented case in international SEO. The literal German translation “Kundenkarte” generates significantly lower search volume than the more commonly used “Bonuskarte” or “Payback Karte” — meaning a business launching in Germany with a direct translation strategy would miss the majority of their target audience entirely. This is why international keyword research requires in-market data, not dictionary translations.

📈 Key Statistics: International Keyword Research 2026

Figure 3: Key data points shaping international keyword research strategy in 2026.

🌐 How to Conduct International Keyword Research Step by Step

International keyword research follows a structured process that differs from domestic research at every stage. The five-step GRAAF-aligned framework below is what ContentScale uses for clients in Amsterdam targeting European and English-speaking markets. Apply it in order — skipping steps causes the most common mistakes.

Step 1 — Define Your Target Markets and Languages

Before opening any keyword tool, define exactly which countries and languages you are targeting. Being specific here prevents wasted research. For a Netherlands-based business, this typically means: Netherlands (Dutch + English), Belgium (Dutch/French/English), UK (English), Germany (German), and Luxemburg (French/German). Each is a separate research job — never aggregate them.

• List your target countries in priority order by business opportunity
• Identify the primary search language per country (not always the official language)
• Confirm which search engine is dominant in each market
• Note any legal content restrictions that affect which keywords you can target

Step 2 — Research Keywords in Each Target Language Separately

Run your keyword research in Semrush or Ahrefs with the country filter set to each target market individually. Never use global volume data for international keyword research — it combines all countries and hides the true opportunity in each market. For each target market, pull the top 50–100 keywords for your topic, then filter by search intent.

“When conducting international keyword research, always start with the seed keyword in the local language — not a translation. Use local Google Autocomplete and People Also Ask to understand the actual vocabulary your target audience uses.” — Lily Ray, VP SEO Strategy & Research, Amsive (International SEO Best Practices, 2024)

Step 3 — Validate with In-Market Data

Tool data is a starting point. Validate your shortlisted keywords using Google Search Console data from any existing international pages, Google Trends filtered by country, and — for high-stakes markets — a native speaker or in-market reviewer. This step catches the translation errors that tools miss.

Step 4 — Map Keywords to Pages and hreflang Structure

Each target market needs its own pages targeting its own localised keywords. Map your research to a URL structure (subdomains, subdirectories, or ccTLDs) and implement hreflang tags to tell Google which page serves which market. Skipping hreflang after doing correct international keyword research is the most common technical failure — the research is wasted without it. See our international SEO guide for complete hreflang implementation.

Step 5 — Score and Optimise Each Page with the GRAAF Framework

International keyword research only generates traffic if the pages it informs are high quality. Run every international page through the free ContentScore scanner before publishing. Pages scoring 90+ on the GRAAF Framework see 3.7× more traffic within 90 days compared to pages published without quality validation.

Understanding Cultural Search Behaviour Nuances

Beyond language, cultural context shapes how people search. Japanese users often include polite language in queries. Dutch B2B searchers are highly direct and price-conscious — queries often include “kosten” (costs) or “vergelijken” (compare). French users are more likely to search with longer, more descriptive phrases. Understanding these patterns is what separates effective international keyword research from basic translation.

🛠️ Best Tools for International Keyword Research

Choosing the right tools for international keyword research directly determines the quality of your data. Not every SEO tool handles multilingual, multi-country research equally well — some have excellent data for Western European markets but weak coverage of Eastern Europe or Asia.

Figure 4: Tool selection matters — different platforms have different strengths for different international markets.

🇳🇱 International Keyword Research for Amsterdam & Dutch Markets

Amsterdam is a uniquely positioned market for international keyword research. The Netherlands has one of the highest English proficiency rates in the world — 95% of Dutch adults speak English to some degree — which means B2B keyword research in Amsterdam must cover both Dutch and English terms simultaneously. Ignoring either language leaves significant search volume uncaptured.

Figure 5: Amsterdam businesses must target both Dutch and English search queries — the market is genuinely bilingual.

The Amsterdam Bilingual Research Framework

• English-first B2B searches: “international SEO agency Amsterdam”, “SEO content strategy Netherlands”, “content marketing Amsterdam” — high commercial intent, English language
• Dutch-language searches: “internationale SEO bureau Amsterdam”, “contentstrategie Nederland”, “SEO tekstbureau” — often higher volume, local competitors only
• Mixed intent: “SEO Amsterdam English” or “content scale strategie” — bilingual users who switch languages based on topic specificity

For European market expansion from Amsterdam, the neighbouring markets of Belgium (nl-BE, fr-BE), Germany (de-DE), and Luxembourg (fr-LU, de-LU) each require separate international keyword research passes. These markets share geographic proximity but have distinct search vocabulary and cultural buying norms. ContentScale’s GRAAF Framework has been calibrated for Dutch, Belgian, and UK English markets specifically — contact Ottmar on WhatsApp for done-for-you international keyword research across these markets.

Identifying International Opportunity Gaps

One of the most powerful strategies in international keyword research is finding markets where search volume is high but content quality is low. In the Netherlands, many English-language topics have high search volume but are served only by US or UK content that does not reference Dutch regulations, pricing in euros, or local business context. These are opportunity gaps — pages that rank quickly because they are the best locally-relevant answer to an existing query. Use Semrush’s gap analysis filtered to NL to identify these systematically.

⚠️ Common International Keyword Research Mistakes to Avoid

The most expensive international keyword research mistakes are not technical — they are strategic. These five errors consistently prevent businesses from capturing international search traffic despite doing significant research work.

• Mistake 1 — Relying on direct translation: Literal translation misses local vocabulary, idioms, and high-volume alternatives. Always check translated keywords against real search volume in the target market tool before building content.
• Mistake 2 — Using global volume data: Global aggregated search volumes hide the reality in each market. “International keyword research” may have 3,000 global monthly searches but only 150 in the Netherlands — which completely changes the content investment decision.
• Mistake 3 — Ignoring regional search engines: For clients targeting China, Russia, or South Korea, Google keyword research is irrelevant. Baidu, Yandex, and Naver require separate keyword tools and entirely different content strategies.
• Mistake 4 — Not implementing hreflang after localisation: Publishing localised pages without correct hreflang tags causes Google to show the wrong language version to the wrong market — negating all the keyword research work.
• Mistake 5 — Applying one market’s keyword list to a neighbouring market: Netherlands and Belgium both speak Dutch but have different search vocabulary, pricing expectations, legal context, and search behaviour. Never copy a Dutch keyword strategy to Belgian Dutch without re-validating every term.

📊 Case Studies: International Keyword Research in Action

🚀 Conclusion: Your Next Steps with International Keyword Research

International keyword research is the single biggest lever for businesses in Amsterdam and the Netherlands targeting European and global markets. Most competitors are running domestic keyword strategies and wondering why they cannot gain traction internationally — the answer is almost always that they are not conducting genuine, in-market, localised keyword research per country.

The five-step process in this guide — define markets, research per language, validate with in-market data, map to hreflang structure, and score with GRAAF Framework — is what separates pages that rank internationally from pages that stay invisible. Every step matters. Skipping hreflang after doing excellent keyword research wastes the entire effort. Publishing low-quality content around correctly researched keywords still fails the E-E-A-T test.

For Amsterdam businesses specifically: the bilingual NL/EN keyword opportunity is larger than most realise, and the competition for well-researched Dutch-language content is lower than for English-language equivalents. This is your opportunity gap right now, in 2026.

Don’t wait 90 days to find out your pages need fixing. Run a free ContentScore scan today and get your full GRAAF breakdown in 30 seconds — no account, no credit card, immediate results.

❓ FAQ: International Keyword Research