What is a multilingual website?

Multilingual
WEBSITE from A to Z
Your International Growth Engine
Multilingual websites
are essential for global growth.
And we know exactly how to build them.
are essential for global growth.
And we know exactly how to build them.

Your Digital Marketing Agency for Global Expansion

International expansion doesn’t happen by accident – it happens with a solid global SEO strategy and a multilingual website built for international success.
A multilingual website is one of the most effective ways to attract new clients and generate high-quality leads in international markets.
With Concept21, you get a high-performance website tailored to each market – built to rank, engage, and grow your business across borders.

Since 2010, we’ve delivered over 1,300 websites and supported clients in more than 100 countries. Thanks to this extensive experience, we know exactly what works — and what doesn’t. Our proven approach drives fast, measurable, and scalable international growth — without the usual guesswork.
Unleash Your Growth
OUR SERVICES
Build for Global Reach. Designed for Local Impact.
01
Analysis & Strategy

Sharp insights, stronger outcomes. We analyze your business, audience, and market landscape to craft a localization strategy that sets your multilingual site up for global success.
02
Design & Redesign

Websites tailored for every market. From brand-new builds to smooth redesigns - we craft scalable, multilingual sites built to engage and convert globally.
03
Website Development

Built to perform and scale.
We program and build your website with clean code, fast loading times, and a scalable structure for future growth.
We program and build your website with clean code, fast loading times, and a scalable structure for future growth.
04
Website Localization

Rank globally. Connect locally.
We adapt layout, tone, visuals, and UX - so your site feels native wherever it goes.
We adapt layout, tone, visuals, and UX - so your site feels native wherever it goes.
05
SEO Localization & Copywriting

Speak their language – the right way. We create culturally relevant content in multiple languages, optimized for search intent and aligned with local expectations.
06
Expert-Guided
AI Localization

Smart translations, local impact.
We combine AI speed guided with human expertise to ensure your content is accurate, culturally tuned, and ready for every audience.
We combine AI speed guided with human expertise to ensure your content is accurate, culturally tuned, and ready for every audience.
07
Advertising & Campaigns

Reach the right audience – at the right time. We run performance-driven campaigns across Google, Meta, LinkedIn and more – to drive awareness, generate leads, and boost conversions.
08
Growth-Driven Maintenance & Support

Long-term success starts here, and we’re always here to help — from quick updates to long-term improvements. Your site stays fast, secure, and optimized for growth in every market.
Clients’ reviews
Joe Stocker
Patriot Consulting

I'm very happy with the website that CONCEPT developed for my company. We are constantly receiving compliments from our clients and partners. The CRM is easy to use and a major differentiator on why we selected Concept.
Holger Vogt
Amena Africa

We contracted CONCEPT to develop a new website for us. The results were outstanding and we are very happy with the new design, functions and structure of the website. The CONCEPT team was super helpful in guiding us on our journey to our new website and are still supporting us after. I can highly recommend their team and services to anyone else in the industry.
Patrick Misiewicz
Polrydian group

I'm a real estate professional, moving my business to the digital/metaverse, which is not such an easy thing to do for busy professionals. That's where CONCEPT came to play, making my www.viewmiamiproperties.com fresh and crispy for my real estate digital campaigns. No matter what business you are in, their personalized and agile approach will make your digital business card look awesome.
Andrea Shaw
The Leasing Academy

The team at Concept21 made great recommendations for my website and helped clarify my messaging for services. I'm very happy with my completed website and appreciate the continued help and guidance they provide even after it has been completed. A great value for the cost!
Wojciech Nowotnik
Enerace

Great staff! Very good reaction and value for money. The entire process was smooth. I can recommend CONCEPT as a reliable partner.
Rafał Zimoch
WhooWhoo

CONCEPT has helped us to start a new webpage/ landing page. Thanks to them we have more than 100% more new B2B leads. Great job CONCEPT!!!!
Paul Mekkering
Nanoflam

I would definitely recommend CONCEPT to anyone who is looking for a very good quality-price web designer. Quick responses, clear and open meetings, reliable, and when the website is running it is easy to make changes yourself. THANKS!
Raquel Barrera Moreno
Diversitas Institute

I totally recommend CONCEPT if you are looking for a reliable and excellent quality-price web designer. A dynamic and professional team that has helped me in the design of my website. Their designs are very modern and the quality and usability of the tools to update the contents are amazing.
Bert Goren
Roxycomms

I had an amazing experience working with CONCEPT on making my new website. Darek was very responsive and had great tips to make things better. I am very happy with the result as well as the professional approach from beginning to end.
Xhulio Bedulla
Xhuli Bre Lalke Shop

Concept21 successfully created and launched a website, which positively impacted the business growth. The team conducted regular meetings to understand the needs and requirements. Their development prowess was critical to the project's success. After releasing the website, my business started to grow, a lot of customers were writing and asking for our services through the website. I can say that helped me a lot.
Dawid Mitera
BudEM sp. z o. o.

We praised the site for its improved look and performance, which resulted in a 50% increase in our site traffic. Concept21 exhibited a keen understanding of the goals, allowing them to deliver professional-looking designs that matched our vision.
Alfonso García
CHULOGO

We were pleased with Concept21 for providing impeccable design skills. The team executed a smooth workflow through, timeliness, effective communication, and an agile methodology. They strove to deliver optimal solutions that ensured the project's success.
Montse Alcalá Bayona
Lovely´s

Concept21 implemented the designs easily, which improved the website's appearance and increased traffic by 60%. The team showed an exceptional understanding of our needs and communicated easily. Overall, they positively surprised us with their top-notch and efficient services.
Our reviews on:
4.9
4.7
5.0
5.0
4.7
This Is How We Get You Global
- Business Deep Dive
- Localized Content Strategy
- Design (or Redesign) That Converts Globally
- AI-Powered Localization, Human Perfected
- SEO Localization & Copywriting
- Testing & Global Launch
- Ongoing Growth & Support



Business Deep Dive
We analyze your business, markets, and goals.
Just sharp insights and a battle-ready plan.



Localized
Content Strategy
We adapt your content for each market — not just translate it. In some countries, that means adding new elements, rewriting sections, or highlighting different features to truly resonate locally.



Design (or Redesign) That Converts Globally
We ensure your website looks flawless and functions perfectly across languages and cultures, with UX crafted to engage every audience.



AI-Powered Localization, Human Perfected
We combine the best AI tools — both external and in-house — with skilled copywriters, proofreaders, and SEO specialists to deliver fast, precise, and culturally accurate localization.



SEO Localization & Copywriting
We align your site with local search intent — writing and optimizing multilingual content that ranks and resonates.



Testing
& Global Launch
We run pixel-perfect testing across all languages, browsers, and devices. Then we launch — fast, smooth, and scalable.



Ongoing Growth & Support
Your site keeps evolving. We monitor, localize updates, improve rankings, and support your growth — market by market.

Your market is bigger than you think. One website to drive it all.
Let’s Start
Built on Trust.
Some of Our Results.

30.3M
Free Google
Impressions in 1 Year
Impressions in 1 Year
Adding 9 language versions to 1 website unlocked over 30 million free impressions in just 1 year. One site — global reach.

2.4k
New Buyer-Intent Keywords Ranked in One Market
Thanks to our local SEO strategy, one multilingual website gained visibility for over 2,400 high-intent commercial keywords — all ranked in a single key market.

86%
of Website Traffic
from the U.S.
from the U.S.
Even though the company is based abroad, our localized SEO strategy positioned the brand strongly in the U.S. market.

26k
keywords ranked on one multilingual website
A single domain, strategically localized led to 26k new keyword rankings across multiple countries.
Our clients
Got Questions?
We’ve Got Answers
Is multilingual good for SEO?
Yes — it helps you rank in local search results and attract more qualified traffic.
Should I translate all my website content or just key pages?
Start with your highest-converting pages like homepage and service pages, then expand based on ROI.
Can I use the same keywords across different language versions?
No, each language needs separate keyword research. Different markets have different search behaviors.
How to handle duplicate content issues across different language versions?
We use hreflang tags correctly to tell search engines about language versions and avoid duplicate content penalties.
How important is content localization compared to simple translation?
Localization adapts content to culture and customs, boosting engagement and SEO. Simple translation often isn’t enough.
How long does it take to see SEO results from a multi-language website?
Initial improvements appear within 1–3 months; bigger results come in 6–8 months depending on authority and localization quality.
Your Website Still Speaks
One Language?
87%
of consumers avoid buying from websites that are exclusively in English.
Source: CSA Research
60%
higher website visits, 47% more search traffic, and a 20% increase in conversion rates can result from localization.
Source: oneskyapp.com
That’s why Amazon, YouTube, Zalando, Facebook, and most successful global companies translate their content — to truly connect with customers worldwide.
Go global!
Now, let’s turn the cards and show you winning projects
*Take a closer look at how we’ve helped our clients achieve success with bold strategies and creative solutions.
Let’s Talk About Working Together
Choose our office:
choose the option
- North America
- South America
- Europe
