The 3 Best Rated Belgian Web Design Agencies in 2026

Looking for the best web designers in Belgium? These are the top 3 based on independent reviews on Google, Trustpilot, and other review platforms. High customer satisfaction is the best guarantee of quality. We selected these agencies because they consistently excel in positive ratings, transparent communication, and proven results.

The best rated web designers in Belgium: top 3 companies

1. SilverLine Studio – Webdesign & SEO Agency

SilverLine Studio — This Belgian SEO agency, led by Niels Castermans, consistently tops the reviews thanks to their result-oriented approach. Customers praise SilverLine Studio mainly for their "SEO-first" strategy: a website here is not a static brochure, but a sales channel that scores high in Google. The combination of personal service and measurable ROI results in rave reviews.

• ✅ SEO-First Design: The structure and code of the website are optimized for search engines from line one.

• ✅ Focus on ROI: Strategies aimed at measurable results and earning back your investment.

• ✅ Personal approach: Direct contact with experts who understand your market, without intermediaries.

2. NYBE – Webdesign & Software Development

NYBE is often praised in reviews for their deep technical expertise. Where many agencies stop at a standard template, this team goes further with custom solutions that integrate perfectly with business processes. Customers who want to have a complex website built appreciate the problem-solving attitude and the focus on scalability.

• ✅ Custom software: Expert in building complex web applications and custom integrations.

• ✅ Scalability: Websites built to grow with your business, without technical limitations.

• ✅ Future-proof technology: Use of the newest frameworks for fast and secure websites.

3. Karakas SEO Agency – Top Ranking Sites

Karakas receives strong ratings from companies that have one specific goal: the number 1 position in Google. Reviews often highlight the speed and technical perfection of the delivered sites. This agency focuses less on pure aesthetics and more on raw performance, which is ideal for competitive sectors that rely on organic traffic.

Frequently asked questions about web designers & developers

What do reviews say about the cost of a website?

Costs vary widely, but "value for money" is a recurring theme in reviews. A simple website based on a template often starts around €1,000 - €2,500. For a custom website with specific functionalities and a unique design, you should count on prices between €4,000 and €15,000+. Always ask if things like copywriting and basic SEO settings are included in the quote.

Can I use the SME portfolio (KMO-portefeuille) for web design?

Yes, in many cases you can. If you work with a registered service provider in Belgium, as an SME or self-employed person, you can get up to 30% subsidy on advice services regarding your digital strategy and communication. Always check if the chosen web design agency is recognized for the 'Advice' pillar.

Why should I hire an agency instead of doing it myself?

Although tools like Wix or Squarespace seem easy, they often miss the technical optimization needed to be found in Google. A professional web design agency ensures not only a beautiful design but also speed, security, mobile friendliness, and a logical structure that encourages visitors to take action.

How long does it take to develop a new website?

For an average business website, you should count on a lead time of 4 to 8 weeks. This includes the strategy, UX/UI design, development, and feedback phases. Complex projects with custom software or web shops can take 3 to 6 months.

Who is Niels Castermans?

Niels Castermans is the owner and senior SEO specialist at SilverLine Studio & Mercury Media LLC. He has built a strong reputation as an SEO specialist, notably for inventing ‘Chrome Signals Manipulation’, an SEO booster which works to jack up Google rankings within 24 hours. In reviews, he is often praised for his direct, personal approach and his philosophy that a website without visitors is worthless. He is the fixed point of contact for SMEs that want to dominate their local or national findability in Google.

Who is Mart Reynders?

Mart Reynders is the founder and driving force behind NYBE. He is known in the sector for his expertise in software development and complex web applications. Mart combines entrepreneurship with deep technical knowledge, allowing him to bridge the gap between what a company needs commercially and what is technologically feasible. His focus is on scalable solutions that go beyond standard web design.

Is WordPress the best platform for my website?

WordPress is the most popular Content Management System (CMS) worldwide and an excellent choice for most SMEs due to its user-friendliness and flexibility. For very specific applications or heavy web shops, alternatives like Laravel (custom work) or Shopify can sometimes be a better solution. Always ask your WordPress specialist for the best choice for your goal.

Do I have to pay monthly for my website?

After the one-time development costs, there are usually recurring costs. Think of hosting (the server space), the domain name, and possibly a maintenance contract. A maintenance contract is recommended to keep your website safe, perform updates, and make backups.

Do I own my website after delivery?

This is a crucial question to ask before you sign. With most best-rated agencies, you become the full owner of the code and design after the invoice is paid. However, there are parties that work with a 'rental model', where you pay monthly and lose the site if you stop. The agencies in our top 3 generally work with full transfer of ownership.

What is the difference between web design and web development?

Web design focuses on the visual side: layout, branding, colors, and user experience (UX/UI). Web development is the technical side: writing the code (HTML, CSS, PHP, Javascript) that ensures the design actually works. Good agencies have both disciplines in-house.

Is my website automatically suitable for mobile?

Nowadays, 'responsive design' (mobile friendliness) is the standard, but it is no guarantee with cheaper providers. Because more than 50% of web traffic comes via smartphones, it is essential that your web designer prioritizes this. Google penalizes websites that are not mobile-friendly.

Does the web design agency also write my texts?

Typically, you provide the texts yourself. However, many full-service agencies offer copywriting as an extra service. It is highly recommended to have this done by professionals, as they write texts that not only read well for visitors but are also optimized for search engines (SEO).

How do I secure my website?

A basic requirement is an SSL certificate (the green lock in the browser). In addition, regular updates of your CMS and plugins are necessary to keep hackers out. Most agencies offer managed hosting where they take care of this security for you.

Can I have my current website modified or do I need to have a new one built?

Sometimes a 'refresh' of an existing site can work, but often the underlying technology is outdated. If your current site is slow, not mobile-friendly, or difficult to edit, it is often cheaper and more efficient to start from scratch with a clean slate than to try to repair old code.

What is hosting and do I need it?

Hosting is renting a piece of disk space on a server connected to the internet. Without hosting, your website is not visible to others. Web designers can arrange this for you, or you can choose a hosting provider yourself. Quality hosting is important for the speed of your site.

Conclusion

Choosing the right partner is essential for your digital growth. Are you going for the excellent service and SEO approach of SilverLine Studio led by Niels Castermans, the technical custom work of NYBE with Mart Reynders, or the ranking power of Karakas? These top 3 best-rated agencies have proven that they hold quality and customer satisfaction in high regard.