What are the biggest mistakes when creating a website?

A suc­cess­ful website thrives on clear structure, appealing design, and technical op­ti­miza­tion. However, many website operators re­peat­ed­ly make common mistakes that affect user-friend­li­ness, vis­i­bil­i­ty, and legal com­pli­ance. In this article, we highlight the most important pitfalls and how you can avoid them with best practices and modern website builders.

Mistake 1: Over­loaded or cluttered design

Design is one of the most important success factors for a website. If the visual and struc­tur­al design is not carefully planned, visitors may quickly lose interest and leave. A good design should present content in an appealing way and provide a pleasant user ex­pe­ri­ence. The following are common mistakes you should avoid:

• Too many different fonts and sizes: Using multiple fonts and in­con­sis­tent sizes can make your layout look chaotic and un­pro­fes­sion­al. Instead, choose a con­sis­tent font family and adjust sizes according to the im­por­tance of the in­for­ma­tion.
• Difficult color com­bi­na­tions or overly bright colors: Strong or un­pleas­ant color contrasts can distract from the content and reduce read­abil­i­ty. Use har­mo­nious color com­bi­na­tions that are easy on the eyes and improve leg­i­bil­i­ty.
• Design that distracts from content: Overly flashy or cluttered design can draw attention away from the actual in­for­ma­tion. The design should support your content, not over­shad­ow it.
• Conflict with the corporate image: If the design clashes with your company’s values and per­son­al­i­ty, it can damage trust. Ensure your design reflects pro­fes­sion­al­ism and aligns with your corporate identity to create a positive per­cep­tion.
• Excessive use of in­ter­ac­tive elements and an­i­ma­tions: Too many moving or in­ter­ac­tive elements can overwhelm users and slow down your site. Only include them when they add real value to the user ex­pe­ri­ence.
• Careless use of design trends: Trends like dark mode or min­i­mal­ism can be appealing, but they must be im­ple­ment­ed thought­ful­ly. If they don’t suit your target audience or website content, they can harm the user ex­pe­ri­ence.

An appealing design with ap­pro­pri­ate color effects should be both aesthetic and func­tion­al. It must promote the usability and read­abil­i­ty of the website while re­flect­ing the corporate image. Avoid excessive focus on design trends and ensure the design clearly supports the content rather than over­shad­ow­ing it.

Mistake 2: Com­pli­cat­ed nav­i­ga­tion and user guidance

Clear nav­i­ga­tion is crucial for the user-friend­li­ness of your website. Visitors should be able to find content quickly without becoming confused. Faulty or com­pli­cat­ed menu struc­tures often cause users to leave the site pre­ma­ture­ly. The following aspects are par­tic­u­lar­ly important:

• Mobile-first design: Since Google now uses the mobile version of your website for ranking, nav­i­ga­tion must be as intuitive on smart­phones and tablets as on desktops. Ensure menus are clearly visible, buttons are easy to click, and there is a logical hierarchy of page content.
• Content pri­or­i­ti­za­tion: Ensure that the most important in­for­ma­tion is visible first and that users can reach it directly. Submenus should be logically grouped to allow users to quickly orient them­selves.
• Ac­ces­si­bil­i­ty. Ac­ces­si­ble nav­i­ga­tion is crucial for everyone, es­pe­cial­ly for people with dis­abil­i­ties. This includes:
• Clear and con­sis­tent menu structure: The nav­i­ga­tion order should be logical and pre­dictable.
• Keyboard nav­i­ga­tion: All menus and in­ter­ac­tions must be operable without a mouse.
• Screen reader com­pat­i­bil­i­ty: Texts, links, and buttons must be properly labeled so that screen readers can recognize them.
• Contrast and font sizes: Ensure suf­fi­cient color contrasts and scalable font sizes for optimal read­abil­i­ty.
• Call-to-Action elements (CTAs): Strate­gi­cal­ly place CTAs to guide users to desired actions (e.g., purchase, newslet­ter sign-up). They should be highly visible, clearly labeled, and ac­ces­si­ble to all users.
• Avoid over­loaded menus: Too many menu levels or com­pli­cat­ed dropdowns make nav­i­ga­tion difficult. Ensure a good user ex­pe­ri­ence design by keeping menus simple and clear, with well-defined cat­e­gories.

Suc­cess­ful nav­i­ga­tion combines mobile-first design, content pri­or­i­ti­za­tion, ac­ces­si­bil­i­ty, and strategic CTAs. This not only increases usability and con­ver­sion rates but also ensures your website is ac­ces­si­ble to all user groups and performs well in search engine rankings.

Mistake 3: Lack of time­li­ness

Outdated content can harm both the user ex­pe­ri­ence and your search engine rankings. To keep your website relevant and pro­fes­sion­al, it’s important to review and update it regularly. The following aspects are es­pe­cial­ly important:

• Regular content updates: Use a content man­age­ment system (CMS) to update content easily and quickly. This makes it simple to add new in­for­ma­tion, offers, or company news as they arise.
• Events and dates: Keep in­for­ma­tion on events, webinars, or company ac­tiv­i­ties current so visitors always find accurate dates and par­tic­i­pa­tion details.
• Company design and branding: Regularly review corporate design elements, logos, colors, and fonts to ensure your web design aligns with your current brand identity.
• SEO op­ti­miza­tion of existing content: Updating content can improve search engine rankings. Regularly review and refine keywords, meta titles, and de­scrip­tions.
• Review of external links: Outdated or broken links can hurt both user ex­pe­ri­ence and SEO. Conduct regular link checks and update them as needed.
• Images and media up to date: Make sure graphics, videos, and downloads are up to date and fully func­tion­al.

A current website signals pro­fes­sion­al­ism, builds trust with visitors, and strength­ens your SEO per­for­mance. Regular content main­te­nance, SEO ad­just­ments, and link mon­i­tor­ing are therefore essential.

Mistake 4: Ignoring ac­ces­si­bil­i­ty and legal foun­da­tions

Legal com­pli­ance and an ac­ces­si­ble design are essential for every website — and ne­glect­ing them can lead to lawsuits, penalties, or rep­u­ta­tion­al damage, es­pe­cial­ly for com­mer­cial projects. The following aspects are par­tic­u­lar­ly relevant in the U.S.:

• Privacy laws (CCPA/CPRA and others): If your site collects personal data from U.S. users, es­pe­cial­ly Cal­i­for­nia residents, it must comply with the CCPA/CPRA and other state-level privacy laws. This includes providing a clear privacy policy and giving users control over their data.
• FTC com­pli­ance: The Federal Trade Com­mis­sion (FTC) requires websites to avoid mis­lead­ing content and to disclose sponsored content or affiliate links clearly and trans­par­ent­ly.
• Ac­ces­si­bil­i­ty (ADA/WCAG): Websites may fall under the Americans with Dis­abil­i­ties Act (ADA), which requires them to be ac­ces­si­ble to users with dis­abil­i­ties. Follow WCAG guide­lines: provide alt text for images, captions for videos, logical nav­i­ga­tion, and full keyboard ac­ces­si­bil­i­ty.
• Mobile-first design: While not legally required, a re­spon­sive layout is best practice for both ac­ces­si­bil­i­ty and SEO. It ensures your site works seam­less­ly on mobile devices, which is critical for modern users.

Summary:

Meeting U.S. legal standards — es­pe­cial­ly regarding privacy, trans­paren­cy, and ac­ces­si­bil­i­ty — builds trust, pro­fes­sion­al­ism, and reach while reducing legal and financial risks.

Mistake 5: Ne­glect­ing re­spon­sive web design or a mobile version

A re­spon­sive web design is essential nowadays, as visitors access your website from various devices – from smart­phones and tablets to desktop PCs. Google has in­tro­duced “Mobile first” indexing, meaning the mobile version of a website is primarily assessed for ranking. Websites without mobile op­ti­miza­tion receive lower place­ments in search results.

Important points:

• Mobile SEO: Content, images, and forms must be optimally displayed on mobile and be user-friendly. Loading times, nav­i­ga­tion, and buttons should be specif­i­cal­ly adapted for touch­screens.
• Re­spon­sive design frame­works: Frame­works like Bootstrap or Foun­da­tion help create flexible layouts that au­to­mat­i­cal­ly adapt to different screen sizes.
• Content op­ti­miza­tion: Ensure important content and call-to-action elements (CTAs) remain highly visible on mobile devices, while less relevant content can be reduced or hidden.

Opting out of re­spon­sive design not only affects user-friend­li­ness but can also sig­nif­i­cant­ly harm vis­i­bil­i­ty in search engines. A “Mobile first” design is now the standard and crucial for your website’s success.

Mistake 6: Not op­ti­miz­ing load time

The load time of a website sig­nif­i­cant­ly impacts user ex­pe­ri­ence and search engine ranking. Slow pages lead to higher bounce rates and poor vis­i­bil­i­ty on Google.

Key points:

• Core web vitals: Google evaluates load time, in­ter­ac­tiv­i­ty, and visual stability as ranking factors. Op­ti­miz­ing these metrics improves both SEO and user ex­pe­ri­ence.
• Image op­ti­miza­tion: Use modern image formats like WebP, compress images, and implement Lazy Loading so that content loads only when scrolled.
• Content Delivery Networks (CDNs): CDNs reduce load times by de­liv­er­ing content from servers that are **ge­o­graph­i­cal­ly closer to the user.
• Ad­di­tion­al per­for­mance tips: Min­i­miz­ing CSS and JavaScript, browser caching, and server-side op­ti­miza­tions also con­tribute to faster load times.

A fast website is not only user-friendly today but also a crucial SEO factor.

Mistake 7: Un­en­crypt­ed data trans­mis­sion without SSL/TLS

An un­en­crypt­ed website com­pro­mis­es user data and can sig­nif­i­cant­ly undermine trust. At the same time, HTTPS is a ranking factor for Google.

Key points:

• HTTPS & SSL/TLS: TLS cer­tifi­cates encrypt data trans­mis­sion and protect sensitive in­for­ma­tion. Google also favors secure websites in its rankings.
• Free cer­tifi­cates: Many hosting providers, including IONOS, offer free SSL cer­tifi­cates that can be installed quickly and easily.
• SEO and trust: HTTPS improves search engine rankings and builds user trust, as secure con­nec­tions are shown by the padlock symbol in the browser.
• Best practices: Regularly check that all sub­do­mains and resources load via HTTPS to prevent mixed content issues.

A website without HTTPS is neither secure nor com­pet­i­tive in terms of SEO and user trust.

Build your website easily with a website builder

Using a website builder for your web presence helps you avoid many common mistakes right from the start. A website builder is easy and intuitive to use — and you don’t need to worry about source code at all. With numerous templates and an ef­fort­less drag-and-drop function, you can quickly customize your website for both personal projects and business use.

Benefits of a website builder at a glance:

• Easy to use: No knowledge of CSS or HTML is required.
• Pro­fes­sion­al templates: Choose from industry-specific templates that are visually appealing, well-struc­tured, and ac­ces­si­ble.
• Custom content: Insert your own images or use stock images from the archive and edit them directly. Built-in tips help with layout and content pri­or­i­ti­za­tion.
• Re­spon­sive design: Your site au­to­mat­i­cal­ly adapts to smart­phones, tablets, and desktop devices. Mobile SEO and “Mobile first” indexing are already con­sid­ered.
• Search engine friendly: Content is delivered SEO-optimized, including meta tags, struc­tured data, and fast loading times.
• Security: Data trans­mis­sion is encrypted via SSL/TLS according to current standards.
• Ac­ces­si­bil­i­ty: Many website builders follow basic web ac­ces­si­bil­i­ty prin­ci­ples to ensure your site is usable for people with dis­abil­i­ties.
• Included extras: Own domain, email addresses, and optional online store with payment and shipping options.

The Website Builder from IONOS, for example, is very easy to use yet delivers out­stand­ing results. With this builder system, you can publish your website with minimal time in­vest­ment — and without any knowledge of CSS or HTML. All you need is a clear concept of the content you want to display.