The Most Common SEO Mistakes – and How to Avoid Them

The most common SEO mistakes rarely happen on purpose; they come from a lack of time or knowledge: a page title is left as “Home”, a meta description is copied, an image gets no alt text. Individually, these points seem small. Taken together, however, they cost rankings, clicks and enquiries. In this article we show the typical mistakes, their effects and concrete solutions.

The list works as a checklist for your own website. If you would rather know which mistakes actually occur on your site, we will be happy to check this for you. So you can optimise yourself or hire a professional – both start with an honest assessment.

The most common SEO mistakes at a glance

We find the following on-page SEO mistakes particularly often in website analyses. They affect small company websites just as much as large online shops:

1. Problematic page titles – too long, too general or without a keyword
2. Missing or weak meta descriptions
3. Duplicate page titles on several subpages
4. Duplicate page descriptions
5. Missing or incorrect H1 headings
6. Excessive emphasis with bold tags
7. Outdated frames and poorly embedded iFrames
8. Missing alt text for images
9. Technical weaknesses such as loading time, mobile display or an accidental noindex

SEO mistake 1: Problematic page titles

The page title (title tag) is one of the most important elements of on-page optimisation. It tells search engines what the page is about and usually appears as the blue headline in the search result. It therefore influences both the ranking and the decision whether someone clicks. The title should therefore be chosen carefully and match the page content.

If a title is too long, Google shortens it with an ellipsis. The limit depends on pixel width; in practice, around 50 to 60 characters is a good guideline. Strings of keywords, on the other hand, look like keyword stuffing and put users off. If a meaningful title is missing, Google generates one itself from the page content – and the result is rarely ideal.

Tips for better page titles

If you want to optimise page titles, it is best to start with the pages that have many impressions but few clicks in Google Search Console. That is where a better title delivers measurable results fastest. These rules help:

• Around 50 to 60 characters in length
• The most important keyword comes first
• Logically combine two or three terms at most, no keyword list
• Every page gets its own unique title
• For local services, name the location, e.g. “Vienna”
• Do not keep changing titles without a reason

SEO mistake 2: Problematic meta descriptions

The meta description is not a direct ranking factor. Nevertheless, it is important: as part of the search result (snippet), it helps decide whether searchers click. A good description briefly summarises the content, names the benefit and ends with a call to action. An online shop could, for example, point out fast delivery or a wide selection.

If the description is missing or does not match the search query, Google shows its own text excerpt from the page instead. This now happens frequently, even when descriptions exist. That makes it all the more important to write a description that matches the search intent exactly – then Google is more likely to use it.

Tips for better meta descriptions

• Around 140 to 160 characters including spaces
• Concrete content instead of general statements
• A call to action such as “find out more now”, “compare” or “enquire”
• Include the main keyword naturally – Google highlights matching terms
• No keyword stuffing
• Every page with its own description

SEO mistake 3: Duplicate page titles

Since the title is one of the most important on-page elements, it should reflect the content of the respective page. If several pages use the same title, Google finds it hard to tell them apart. Your pages may then compete for the same search terms, and Google does not always show the right page. At the same time, you miss the chance to be found for different terms with each page.

Duplicate titles often arise from templates, filter pages in online shops or category and page numbering. An SEO crawler or the page check in your SEO plugin reliably uncovers such duplicates.

SEO mistake 4: Duplicate page descriptions

Meta descriptions should not appear more than once either. An identical standard description on many pages offers searchers no added value and is often ignored by Google. It is better to write individual descriptions for important pages. For less important pages, a missing description is usually better than a copied one – then Google chooses a suitable text excerpt.

SEO mistake 5: Incorrect H1 headings

Headings structure texts and improve readability. Search engines use them to understand the structure and focus of a page. A common mistake is a missing H1, an H1 unrelated to the content, or a theme that outputs the same H1 on every page. The H1 should summarise the content of the page with the most important keyword.

Tips for the heading structure

• One clear H1 as the main heading per page (recommended practice)
• Logical order: H1, then H2, below that H3 – without skipping levels
• The H1 matches the page title and the content
• Use relevant keywords naturally in headings
• Use headings only for content, not for design, navigation or the footer

SEO mistake 6: Too much or incorrectly used emphasis

The <strong> and <b> tags let you highlight important terms. <b> only makes text bold, while <strong> also marks it as important in terms of content. According to earlier statements by Google, both are treated practically the same in the evaluation. So emphasis is not a big ranking lever, but it helps readers skim.

• Prefer <strong> when a term is important in terms of content
• Highlight only short passages, not entire paragraphs
• Use emphasis sparingly and in proportion to the length of the text

SEO mistake 7: Pages with frames and poorly embedded iFrames

Frames are a very old technique for dividing a page into several areas. Search engines then often index the individual parts as separate pages – without navigation and without context. This is confusing for users. Modern websites should avoid frames altogether. iFrames for videos, maps or booking tools, on the other hand, are common. Bear in mind, however, that their content is usually not attributed to your page and can increase loading time.

SEO mistake 8: Missing alt text for images

Alt texts are short image descriptions in the HTML. They help search engines understand the content of an image and are read aloud by screen readers. This makes them important for accessibility and for visitors coming via Google Image Search. If an image cannot be loaded, the browser displays the alt text. The title attribute, on the other hand, is optional and of secondary importance for SEO.

The file name also counts: an image of a cat should be called “cat.jpg” and not “RSM00001.jpg”. Also compress images and use modern formats such as WebP so that they do not increase loading time unnecessarily.

Other common SEO mistakes that matter today

In addition to the classic on-page mistakes, we regularly see technical and strategic weaknesses in website analyses. These often have an even greater impact, because they affect entire areas of a website.

Mistake	Consequence	Solution
Slow loading time	Bounces, weaker Core Web Vitals	Optimise images, caching, hosting
Poor mobile display	Google evaluates the mobile version	Check the responsive design
Accidental noindex	Page disappears from Google	Check indexing in Search Console
Broken links (404)	Poor user experience	Correct links, 301 redirects
Several pages on the same topic	Pages compete with each other	Merge them, assign topics clearly

Ignoring loading time and Core Web Vitals

Google measures user experience with the Core Web Vitals, among other things: LCP (loading time of the largest content element), INP (response time to input, the successor to FID since 2024) and CLS (visual stability). Slow pages lose visitors before they even see the content. You will find your website’s values in PageSpeed Insights and in Google Search Console. Google explains the details in its documentation on Core Web Vitals.

Forgetting mobile users

Google evaluates websites predominantly based on their mobile version (mobile-first indexing). Text that is too small, overlapping elements or horizontal scrolling therefore do direct damage. Modern, responsive web design in Vienna ensures that your website works on every device.

Neglecting internal linking

Many websites hardly link their most important pages to each other. Yet internal links show Google which pages are central and guide visitors onwards in a targeted way. Link from blog posts to relevant service pages, use meaningful anchor texts instead of “click here” and avoid pages that no internal link points to at all.

No strategy for AI search

Google AI Overviews, ChatGPT and other AI systems increasingly answer questions directly. If you offer clear answers, a clean structure, FAQ sections and structured data, you are more likely to be cited there. This Generative Engine Optimization (GEO) complements classic SEO but does not replace it. Find out more from our GEO agency in Vienna.

Avoid SEO mistakes: do it yourself or hire a professional?

You can fix many of the points mentioned yourself with a little time, especially on small websites. An SEO plugin such as Rank Math, Google Search Console and PageSpeed Insights are good tools for this. For larger websites, online shops or technical problems, professional support pays off, because otherwise mistakes are overlooked or fixed in the wrong place.

As an SEO agency in Vienna, Kodlogy checks your website in full, prioritises the mistakes by impact and, if you wish, implements the corrections directly. For WordPress websites, we also take care of ongoing maintenance so that no new mistakes creep in – for example as part of our WordPress maintenance in Vienna.

Frequently asked questions about the most common SEO mistakes

What is the ideal length for a web page title?

As a guideline, around 50 to 60 characters. Google truncates titles based on pixel width, so this is not an exact limit. What matters is that the core message and the main keyword are right at the front and remain visible even if the title is shortened.

Why is the design of the page title crucial for search engine optimisation?

The page title is one of the most important on-page elements: it shows Google what the page is about and is usually the blue headline in the search result. A clear, relevant title improves matching with search queries and increases the chance that users click.

Which strategies help optimise page titles effectively for search engines?

Put the most important keyword at the beginning, state a concrete benefit and stay at around 60 characters. Every title should be unique and match the content. If needed, Kodlogy can help you revise your titles systematically.

How long should an optimal page title be?

An optimal page title is short enough to be displayed in full in the search result – in practice usually 50 to 60 characters. Wide letters such as “W” or “M” take up more space than narrow ones. A preview in your SEO plugin shows whether the title fits.

Why does the page title have a positive influence on search engine rankings?

The title gives search engines a strong signal about the topic of the page. If it matches the search query well, Google can more easily classify the page as relevant. In addition, an appealing title leads to more clicks, which increases the overall visibility of your website.

How do I optimise page titles for better click-through rates?

Combine the main keyword with a clear benefit, such as “checklist”, “prices” or “in Vienna”. Avoid empty phrases and strings of capital letters. Test changes step by step and monitor the click-through rate in Google Search Console.

What significance do page titles have for search engines?

Page titles help search engines classify the content of a page quickly and distinguish it from other pages. They are an important relevance signal and at the same time shape the first impression in the search result. If a good title is missing, Google often generates one itself – with an uncertain result.

Why is the character limit for the page title important?

Google only displays a limited width in the search result. Titles that are too long are cut off with an ellipsis, so important information may be missing. A compact title also looks clearer and is rewritten by Google less often.

How do I write appealing titles for my website?

Use the title to answer the question your target group is asking, and state the concrete benefit. Put the main keyword at the front and, for local services, add the location. Kodlogy will be happy to help you write titles for better rankings and click-through rates.

What role does the page title play for Kodlogy?

In every SEO project at Kodlogy, revising the page titles is one of the first steps, because it can achieve a lot with little effort. We check length, keyword, uniqueness and click appeal and adapt the titles to the search intent.

How do I avoid common mistakes with page titles?

Give every subpage its own title that describes the content precisely. Avoid lists of keywords, placeholders such as “Home” and overly long texts. A regular check with an SEO crawler reveals duplicate or missing titles.

Why are unique page titles essential for search engines?

Unique titles help search engines assign each subpage to its own topic. With identical titles, your pages compete with each other, and Google may show the wrong page. Unique titles therefore improve relevance and click-through rate alike.

How do precise titles improve rankings on Google?

Precise titles make the relevance of a page for a search query clear. This allows Google to match the page better, and users recognise more quickly that they will find the right answer here. More relevant clicks are a good sign of the quality of the result.

What should you pay attention to when optimising page titles?

Pay attention to uniqueness, a main keyword placed at the front, a length of around 60 characters and wording that invites a click. The title must deliver what the page promises. Otherwise, visitors will quickly leave again.

How do page titles affect findability in Vienna?

For local services, many people search with a location, for example “web design Vienna”. If your title contains the location and the service, search engines and users immediately recognise the regional connection. This improves your chances for local search queries in Vienna and the surrounding area.

What are the advantages of professional title optimisation?

Professional optimisation is based on real search data, for example from Google Search Console. This way, the titles are adapted to the terms your target group actually searches for. Kodlogy Technologies GmbH combines this with the optimisation of content and technology.

How do I design page titles for maximum attention?

Use concrete words instead of general terms, state a clear benefit and put the main keyword at the beginning. Numbers in list articles or a clear question can also stand out. Stay honest – exaggerated promises damage trust.

Why do all subpages need individual page titles?

Each subpage covers its own topic and should be found for its own search terms. An individual title makes this visible to Google and users. Identical titles, on the other hand, lead to confusion and weaken the position of the individual pages.

How does Kodlogy support website optimisation?

Kodlogy analyses your website technically and in terms of content, fixes errors and optimises titles, descriptions, headings and loading time. A good starting point is our SEO audit in Vienna. After that, we can implement the measures directly if you wish.

How does title length affect users?

A fully visible title tells users immediately what to expect. Truncated titles look unfinished and leave out important information. Short, clear titles make the decision to click easier, especially on a smartphone.

Why should keywords appear in the page title?

The keyword in the title shows search engines and users at a glance that the page matches the search query. Google sometimes highlights matching terms in the search result. This increases the likelihood that potential customers will find and click on your page.

How do I improve my website through page titles?

Check all the titles on your website for length, uniqueness and keyword. First revise pages with many impressions and few clicks in Search Console – that is where the leverage is greatest. Even small changes can noticeably improve the click-through rate.

Which SEO mistakes do we avoid with page titles?

We avoid titles that are too long, missing or misplaced keywords, duplicate titles and keyword lists. We also make sure that the title matches the search intent and the content. The result is precise titles that support rankings and click-through rate.

How do page titles increase organic search volume?

A title does not change the search volume itself – but it does change how many of these searches end up on your website. A suitable title can lead to better positions and a higher click-through rate. Together, both bring more organic visitors.

Why are page titles a core factor for SEO?

Page titles combine two tasks: they help search engines understand the page and convince people in the search result. Hardly any other element has such a direct effect on ranking and click-through rate at the same time. That is why they are among the basics of any optimisation.

How do you optimise page titles for local search queries?

Combine service and location, for example “website creation Vienna”, and place both as far forward as possible. If needed, add a district or a clear benefit. Kodlogy helps you develop locally relevant titles for your region.

What criteria make a perfect page title?

A very good page title summarises the content precisely, names the main keyword at the beginning, is around 60 characters long and is unique on the website. It also sparks interest without promising more than the page delivers.

How does Kodlogy help with technical SEO questions?

Kodlogy checks your website with crawlers and data from Google Search Console, fixes errors such as duplicate titles, faulty headings, missing alt text or slow loading times and improves the technical structure. This creates the basis for better rankings.

Why is the page title the most important SEO element?

There is no single “most important” element in SEO – content, technology and links work together. However, the page title is one of the most influential on-page elements, because it signals relevance and helps decide the click in the search result.

How do I check the length of my page titles?

Most SEO plugins, such as Rank Math, show a snippet preview with a length indicator while you edit. For entire websites, SEO crawlers that list all titles including their length are suitable. Online SERP simulators help with individual pages.