Technical SEO common myths and mistakes

Maxim Dimura

03.11.2025 | 6 minutes of reading

Updated: 03.11.2025

Technical SEO – this is a crucial part of a business’s online presence, but is often surrounded by myths and misconceptions. In 2025, given updates to the Google and Yandex algorithms, it’s important to understand how to avoid common mistakes and myths in technical SEO. In this article we will examine the most common myths, their impact on a website, and how to properly apply technical SEO to improve search engine rankings.

Technical SEO is not a one-time task. It requires continuous monitoring and updates, especially considering new metrics such as Core Web Vitals (LCP, FID, CLS, INP), which affect user experience and ranking. For example, INP (Interaction to Next Paint): it is a new metric that replaced FID and helps better measure a page’s responsiveness. An example of effective use of INP is the improvement of SEO metrics on the e-commerce platform Trendyol.

In my experience, the BUSINESS SITE team always emphasizes the importance of continuous monitoring and updates to technical SEO. This allows our clients to remain competitive in a rapidly changing digital environment.

Understanding and debunking technical SEO myths will help avoid mistakes and build an effective promotion strategy.

Technical SEO myths and how to avoid them

Myths about technical SEO often arise from misinterpreting recommendations or from outdated information. A website owner with a limited budget can fall into a trap by following such advice. To avoid these myths, it’s important to understand, how algorithms work of search engines and how they change.

Why Correlation Is Not Causation in SEO

SEO specialists often confuse correlation with causation, which leads to the spread of myths. For example, if a site with a large number of keywords ranks better, that does not mean the keywords are the cause of the good ranking. It may simply be correlation, and in fact other factors have an impact, such as content quality or page load speed.

In 2025, search engines, including Google and Yandex, focus on semantic relevance rather than the number of repetitions. Keyword stuffing can lead to penalties, especially if the text loses readability. Modern algorithms analyze context, structure, and the usefulness of content.

Impact of Speed and Mobile Responsiveness on SEO

Everything starts with the technical foundation: if the site loads in 8 seconds, meta tags are duplicated, and half the pages are not indexed, it’s useless to write content or buy links. Page load speed and mobile responsiveness are important ranking factors. Optimizing these parameters not only improves SEO but also enhances the user experience.

How to Optimize Site Load Speed to Improve SEO

Optimizing page load speed involves several steps:

Image optimization: Compressing images can significantly reduce page size and improve loading speed.
Using caching: Caching reduces the number of requests to the server, which speeds up page loading.
Improving server performance: Using powerful servers or load balancing can significantly improve the site’s response time.

Our goal – 1.5-2 seconds. You can check it in PageSpeed Insights, GTmetrix or Yandex.Tools. No one will wait 8 seconds.

HTTPS and Robots.txt: Myths and Reality

https is not only a ranking signal but also an important factor in user trust. Robots.txt does not block indexing; it is used to control crawling. If you want to prevent indexing of specific pages, you should use the noindex meta tag instead of robots.txt.

Why HTTPS Is Important for SEO and User Trust

HTTPS is necessary to ensure data security and increase user trust. Its absence can negatively affect a site’s positions in search engines. Google explicitly states that HTTPS is one of the ranking factors, and sites without HTTPS may be marked as insecure in the browser.

XML sitemap and external links in SEO

An XML sitemap helps search engines correctly index pages, and external links can be useful for strengthening a site’s authority. Although link profile remains an important factor, its role has changed. In 2025, search engines evaluate not only the quantity but also the quality of links. Toxic donors, unnatural anchors, and mass link buying can harm a site.

Why an XML sitemap is needed for small businesses

An XML sitemap is useful not only for large sites but also for small businesses, as it helps ensure full indexing of pages. This is especially important for sites with a large structure or regularly updated content.

SEO for Business: How to Avoid Mistakes

An SEO strategy must consider not only technical aspects but also business goals. Proper application of technical SEO can significantly increase ROI and improve rankings in search engines.

Regular analysis, content updates, adaptation to new devices and formats – all of this is necessary to maintain and grow rankings. It is especially important to monitor changes in the search results and adjust the strategy in real time.

How to Measure ROI from Technical SEO for Entrepreneurs

Measuring ROI from technical SEO helps understand the effectiveness of investments and make informed decisions for further business development. This includes analyzing key metrics such as CTR (click-through rate), conversion and LTV (customer lifetime value).

Questions about the article

How often should technical SEO on the site be updated?

It is recommended to conduct a technical SEO audit every 3–6 months or after major changes — a redesign, migration, or the launch of new sections. Regular checks help detect indexing errors, duplicates, and issues with performance and site structure in time.

What are the main myths about technical SEO that can harm my site?

«Technical SEO is a one-time job» — in reality, it should be updated regularly.
«Only content and links are enough» — without an optimized page structure, pages may not be indexed.
«Performance doesn’t affect ranking» — loading speed is directly related to Core Web Vitals.
«All 404 errors are harmful» — some are acceptable and natural.
«robots.txt fully protects content» — it’s not a security tool, but a guideline for crawlers.

Which Core Web Vitals metrics are important now and how to improve them?
Three key metrics:

LCP (Largest Contentful Paint) — loading speed of the main content (<2.5 s).
- → Optimize images, use lazy loading, CDN.
INP (Interaction to Next Paint) — site responsiveness (replaces FID).
- → Reduce JavaScript, minimize response latency.
CLS (Cumulative Layout Shift) — visual stability (<0.1).
- → Set fixed dimensions for media elements and avoid dynamic layout shifts.

Why doesn’t robots.txt guarantee complete protection from indexing?

The robots.txt file only indicates to search bots which sections *should not be crawled*, but does not block access. If there is an external link to a page, it can still be indexed with an empty description. For real protection use noindex, passwords or HTTP authorization headers.

How to correctly use rel=”next” and rel=”prev” in modern SEO strategies?

Google officially no longer uses rel=”next” and rel=”prev” for pagination (since 2019), but these attributes are still useful for user convenience and other search engines.

Current recommendations:

Use canonical links to indicate the main page;
Add structured data (`ItemList`, `BreadcrumbList`);
Ensure logical navigation (pagination links, ‘next/previous’ buttons).

Thus, pagination remains an important part of UX, but indexing management should be implemented through canonical, robots meta and site architecture.

Conclusion on Website SEO Optimization

Technical SEO is a crucial part of a business’s online presence. Understanding common myths and mistakes, as well as properly implementing technical SEO, can significantly improve a site’s rankings in search engines and increase ROI. It’s important to stay up to date with algorithm updates and continuously refine your SEO strategy. BUSINESS SITE is always ready to help you in this process by providing comprehensive solutions to improve your online presence.