In the realm of SEO knowledge, sometimes it's the most basic things that get overlooked. Even top SEO experts can miss simple but crucial SEO constraints. In this article, we will explore 24 commonly overlooked SEO constraints that have a significant impact on website performance and visibility. From managing technical elements like title and meta description lengths to understanding Google's crawl limits, we'll delve into each detail to better understand how these factors influence SEO strategies.
24 SEO Limits You Can't Afford to Ignore
Title Length
SEO limit guideline: Maintain 60-70 characters for desktop and 70-76 for mobile to guarantee complete visibility in search results.
Search engines usually display around 60-70 characters on desktop and 70-76 characters on mobile in search results.
Titles that are longer than this restriction may be cut off in the search engine results page, making them appear incomplete and unclear, which could result in a lack of user engagement. This may result in reduced click-through rates, which is not ideal. Additionally, Google might reword very long titles, which could change the message you want to convey. Following this limit can assist in retaining control over how your snippet is presented.
Tip: You can review your website's titles using Semrush's On-Page SEO Checker tool by: Entering the page and target keywords to check if the title contains too many words.
Quantity of Title and H1 Tags per Page
SEO limit requirement: Each page should contain only one title tag and one H1 heading.
Google indicates that there are no rigid restrictions on the quantity of title and H1 tags you can incorporate. Having several tags can potentially confuse search engines and spread the attention of your content since only one will be highlighted. Having only one title and one H1 header helps to clearly indicate the main subject of your website. Your title tag may not always be the same as the H1 tag.
Tip: You can check the number of title tags and H1 tags through Semrush. Open the tool, follow the Site Audit configuration instructions, and select “Start Site Audit.
Meta Description Length
SEO limit for meta description should be limited to 160 characters for desktop and 120 characters for mobile to improve user engagement for SEO purposes. The reason for these constraints is similar to that of title tag length. Search engines usually shorten meta descriptions to 160 characters on desktop search results and 120 characters on mobile. Incomplete display of your message may cause ambiguity and result in decreased click-through rates.
Craft brief but smart meta descriptions to attract users to click. Remember to include pertinent keywords. Keep in mind that Google frequently (70% of the time) modifies meta descriptions to align better with search queries.
Tip: Use Semrush's Site Audit to efficiently identify any missing or duplicate meta descriptions on your website. Run the audit, navigate to the “Issues” tab, and input “meta description” in the search bar.
Image File Size
SEO limit requirement: Keep image file sizes below 200KB to enhance loading speed and user experience.
Large picture files can greatly impede website loading speed, leading to increased bounce rates. Users have low tolerance for extended loading times and may choose to visit a competitor's website instead. Moreover, the size of images impacts Core Web Vitals and, consequently, your search engine rankings. Hence, it is essential to comply with the 200KB restriction.
Use programs such as JPEG Optimizer or TinyPNG to compress photos effectively and improve page loading time without reducing quality. Furthermore, go into our detailed guide on image SEO to grasp all the complexities of image optimization.
You can check your website's page speed through the Semrush App Centre.
Size of Sitemap and Quantity of URLs
SEO limit: Sitemap cannot exceed 50MB when uncompressed and must contain a maximum of 50,000 URLs.
Sitemaps act as navigational tools for search engines, assisting them in effectively finding and categorizing the material on your website. By following the set boundaries, search engines may efficiently process your sitemaps and index all pertinent pages.
For websites with over 50,000 URLs, it is advisable to split the sitemap into different ones. To address this situation, generate a sitemap index file that lists all of them (you can submit a maximum of 500 sitemap index files per site in your Search Console account). This helps search engines find and access all of your sitemaps. Be sure to update your sitemaps frequently when adding or removing substantial content from your website.
To assess the functionality of your sitemap, you can utilize Semrush's Site Audit tool.
Disavow File Size and Number of URLs
SEO limit: Files must not exceed 2MB in size and a maximum of 100,000 URLs can be included.
A disavow file enables you to inform Google about backlinks that you consider to be of low quality or spammy. Google may need additional time to process disavow files that are larger in size. Additionally, surpassing the URL restriction may lead to certain desired backlinks not being disavowed. These things can influence your SEO performance.
Only utilize disavowal when essential, as when you have received a Google Penalty. Avoid misusing this tool.
Robots.txt File Size
Maximum size SEO limit for the robots.txt file is 500KB.
The robots.txt file gives instructions to search engine crawlers on how to navigate and access your website. It acts as a guide for web crawlers, specifying the pages they are allowed to access and those they should steer clear of. There is a file size limit in place to ensure search engines can process it efficiently.
Exceeding the given size limit for the robots.txt file can result in search engines completely ignoring it. Additionally, the crawling process may be delayed. Exceeding the size restriction could lead to sections of the instructions being cut off. This may result in misinterpretations, perhaps leading search engines to restrict access to important content.
Alt Text Size
SEO limit for alt text must not exceed 120 characters.
Alt text is crucial for ensuring website accessibility and optimizing for SEO. It provides a textual representation of images to assist users with visual impairments or those who rely on screen readers. Moreover, it helps search engines understand the context and substance of your photographs.
Strive for concise and precise alt text descriptions that are factual and include relevant keywords, avoiding unnecessary length. However, focus on ensuring clarity and usefulness for persons who depend on alternate text for understanding.
Anchor Text Size
SEO limit: 6 – 8 words or 55-60 characters.
Anchor text refers to the clickable text within a hyperlink, typically displayed as underlined and blue. While there isn't an “official” limit for anchor text, maintaining conciseness is crucial for user experience. Concise anchor text improves user experience by reducing clutter and facilitating easier navigation. Additionally, it aids search engines in comprehending the context of linked pages.
URL Length
Maximum SEO limit for URL length allowed: 2,000 characters.
While URLs do not have a specific character limit, really long ones might create multiple difficulties. Long URLs can be difficult for visitors and search engines to understand, causing confusion. Long URLs may seem suspicious to users, dissuading them from visiting because of worries about irrelevant or misleading content. It is recommended to keep URLs brief and informative by include pertinent keywords and avoiding superfluous characters or parameters.
You can use the Site Audit tool to check if your URLs are properly configured and to identify any potential issues that may arise.
Redirect Hops
Redirect Hops for SEO limit: Preferably, less than five hops from the original URL.
Redirects are essential for handling website modifications, such moving content to a new URL or fixing broken links.
However, it is crucial to understand that every redirect adds an extra HTTP request, which could cause substantial delays in loading the website. Furthermore, with every redirect, a portion of link equity diminishes. Consequently, the destination page may obtain limited or no PageRank, leading to lower performance than anticipated.
Moreover, search engines could have obstacles when navigating through long redirect chains, which could lead to indexing and crawling issues for your website. It is crucial to conduct regular audits of your website's redirect chains to reduce needless hops, improving user experience and search engine crawling performance.
Page Load Time
SEO limit for page load time must not exceed 3 seconds for desktop and 2 seconds for mobile.
Page load time is the period it takes for a web page to fully load and become operational for users. This aspect has a substantial impact on both user experience (UX) and search engine optimization (SEO). Users anticipate rapid website loading times. Sluggish loading rates can lead to annoyance, restlessness, and finally, users abandoning the site. Moreover, pages that load quickly are thought to be given priority in Google search rankings.
To improve website load speed, optimize images, reduce server response times, use browser caching, and implement content delivery networks (CDNs).
Core Web Vitals
SEO Limit: The LCP period should not exceed 2.5 seconds, the FID period should not exceed 100 milliseconds, the CLS period should be equal to or less than 0.1, and the INP period should not exceed 200 milliseconds.
The Core Web Vitals (CWV) are a set of measures developed by Google to assess key aspects of user engagement with webpages. The metrics in question essentially evaluate the speed at which a webpage loads, its responsiveness, and its visual consistency. Below is an elaborate analysis of these metrics:
The metric known as Largest Contentful Paint (LCP) measures the duration required for the largest content element on a webpage to completely load. To guarantee a satisfying user experience, it is advisable to aim for LCP values that are below 2.5 seconds.
The concept of First Input Delay (FID) pertains to the temporal interval between a user's engagement, such as clicking or tapping, and the subsequent response generated by the webpage. To achieve an ideal user experience, it is important to maintain the FID (Failure Indicator) below 100 milliseconds, which guarantees a seamless and prompt interface.
It is important to note that FID is presently undergoing a transition to Interaction to Next Paint (INP) within the current month. It is advised to maintain a threshold of fewer than 200 milliseconds.
The Cumulative Layout Shift (CLS) metric measures the magnitude of unforeseen layout adjustments that take place throughout the loading of a webpage, potentially causing disruptions in user engagement. In order to retain visual stability and ensure user happiness, it is recommended to strive for a CLS score of 0.1 or below.
The optimization of Core Web Vitals plays a crucial role in improving customer pleasure and minimizing irritation when navigating websites. As a result, this facilitates increased user involvement, enhanced rates of conversion, and overall achievement for the website.
To quickly assess your core Web Vitals scores, you can initiate a project for your website within Semrush. Utilizing the Website Audit tool, you can view the LCP and CLS for any 10 pages of your choosing.
SEO Limit for Page Size
Seo limit: Less than 3MB in size to guarantee swift loading times across different devices and network conditions.
Page size refers to the overall data volume required for a web page to download and display in a user's browser. Larger files necessitate extended download durations, particularly on slower internet connections or mobile devices. Naturally, a hefty page can result in user annoyance and heightened bounce rates.
Therefore, compressing images, minimizing CSS and JavaScript, and optimizing multimedia content are advisable actions to diminish page size and enhance page performance.
SEO Limit for Click Depth
SEO limit: Maintain a click depth of 3-4 from the homepage.
Click depth denotes the number of clicks required for a user to access a specific page starting from the homepage. While there isn't a rigid constraint, it's advisable to aim for a lower click depth.Users anticipate swift and effortless access to desired information. Excessive clicks can result in user frustration. Content that is easily accessible and navigable tends to garner higher user engagement. Additionally, an extensive click depth can deplete your crawl budget, potentially leading to indexing issues.
A maximum click depth of three is widely regarded as acceptable, as it enables users to access most pages within a few intuitive clicks from the homepage. Therefore, endeavor to keep your critical pages in close proximity to the homepage to facilitate user navigation.
Tip: Pages crawled in your Website Audit report via Semrush can reveal click depth beyond 5.
SEO Limit for Keyword Density
SEO limit: Maintain keyword density between 1-3% without resorting to keyword stuffing.
Keyword density refers to the proportion of times a specific keyword appears in your content relative to the total word count. Excessive repetition of keywords, known as keyword stuffing, can have detrimental effects on your website's search engine ranking and user experience. Search engines may even penalize websites employing such tactics.
Aim for a keyword density ranging from 1-3% to strike the right balance. However, your foremost priority should always be crafting valuable and compelling content for your audience. Incorporate keywords naturally and only where they are contextually relevant.
To compute your keyword density, utilize the formula: (# of occurrences of keyword / total word count) * 100. For instance, if your target keyword appears 10 times in a page containing 500 words, your keyword density would be calculated as follows: (10 / 500) * 100 = 2%.
SEO Limit for Content Length
SEO limit: Exceed 300 words.
In the realm of SEO, the term “thin content” describes pages that offer minimal or negligible value to visitors. These are pages characterized by sparse or lacking content. Moreover, thin content is widely recognized as a potential cause for Google penalties. Hence, the greater the volume of quality content you offer, the higher the value you deliver. While longer content may afford more scope for incorporating keywords and depth of coverage, prioritizing quality and relevance remains paramount.
SẺO Limit for Interanal Linking
SEO limit: Maintain 100-150 internal links per page.
Although Google has previously cautioned against excessive internal linking, it's essential to recognize that the guideline of 100-150 links is not absolute. Instead, prioritize the development of a well-organized and user-centric internal linking approach, rather than rigidly adhering to a specific quantity. When crafting internal links, consider the user's viewpoint. Position them logically to enhance navigation and streamline the user experience. Additionally, keep in mind that internal linking plays a role in distributing PageRank. Therefore, the more you link, the more equity you distribute.
Tip: To begin, access Semrush's Site Audit tool. Then, input your website's name and click on “Start Audit.” The tool will prompt you to configure its scanning settings. Once you've completed this step, the audit will commence. Upon completion, you'll locate your Internal link score (under Thematic Reports). Click on “View details” to receive the comprehensive report.
SEO Limit for Crawl limit per page
SEO limit: 15MB.
Encountering a page exceeding 15MB in size is uncommon. Most likely, your pages are significantly smaller (recall our earlier discussion on page size limits?). Although surpassing a theoretical “crawl limit” per page may not directly impede indexing, it can adversely affect your website's crawl efficiency and overall SEO. If a webpage exceeds this threshold, Googlebot will only process the initial 15MB of content.
Tip:
- Optimize and minify your website's code (HTML, CSS, JavaScript).
- Compress images to reduce file size while maintaining quality. Consider employing modern image formats such as WebP or AVIF.
- Restrict the usage of external scripts, fonts, and other resources that contribute to page size and may hinder crawling speed.
- Avoid excessive inclusion of irrelevant elements that inflate page size.
SEO Limit for Crawl Budget
SEO limit: For larger websites, the crawl limit is typically set at a few thousand pages per day.
Search engine crawlers assign a finite budget for crawling to each website, prioritizing pages based on their significance and freshness. Therefore, it's crucial to concentrate on developing a well-organized, effective, and user-friendly website.
Tip: Employ robots.txt directives, XML sitemaps, and internal linking strategies to instruct search engine crawlers to prioritize the crawling of essential pages.
Google Search Console limits
SEO limit: Up to 1,000 properties, 1,000 rows of data, a maximum of 500 sitemap index files, and a rendering limit of 10,000 pixels.
Google Search Console (GSC) provides valuable tools for website owners and SEO professionals. However, it's crucial to understand the following limitations: You can include and oversee a maximum of 1,000 websites within your GSC account, enabling you to monitor the performance of a diverse array of properties.
Reports generated in GSC may exhibit a maximum of 1,000 rows of data. This restriction aids in data presentation management and prevents overwhelming dashboards. To access data beyond the initial 1,000 rows, utilize filters, segmentation, or download the complete dataset for further analysis. GSC accepts up to 500 sitemap index files for efficient discovery and indexing of website content by search engines, accommodating most website structures.
During website rendering analysis in GSC, a rendering height or width limit of 10,000 pixels is enforced, ensuring streamlined processing and mitigating potential issues with excessively large pages.
Tip:
Emphasize essential data – concentrate on key metrics and reports aligned with your SEO objectives. If managing numerous websites, contemplate creating separate GSC accounts or leveraging team features to facilitate efficient access sharing.
Furthermore, if your website necessitates more than 500 sitemap index files, consider consolidating or restructuring them to enhance manageability.
Google Business Profile limits
SEO limit: 100 characters for a business name and additional limits.
Google Business Profile (GBP) serves as a complimentary tool empowering businesses to manage their online presence across Google Search and Maps. However, there are specific technical constraints to consider:
- Business name: Limited to 100 characters.
- Description: Restricted to 750 characters, including spaces.
- Category selection: Allows for up to 10 primary categories and 10 subcategories.
- Photos: Permits up to 10 primary photos and a total of 250 photos per listing.
- Posts: Limited to 1,500 characters per post.
- Questions & Answers: Limited to 400 characters per answer.
- Review text: Capped at 500 characters.
- Response to reviews: Limited to 1,000 characters.
- Edits: Allows for 10 edits per minute per profile.
Tip: Although certain fields impose character limits, prioritize furnishing accurate and succinct information. Remember to incorporate relevant keywords into your business name, description, and category selection to enhance discoverability in search results.
Google Analytics Limits
SEO limit: 10 million hits per month per property and additional constraints.
Although Google Analytics provides robust website analytics capabilities, certain limitations are in place to ensure efficient data processing and system functionality. One such limitation is the cap of 10 million hits per month per property. Exceeding this limit may result in slowed data processing or temporary suspension of data processing. Consequently, users may encounter difficulties accessing specific reports or notice inconsistencies in data visualization.
Additional limitations in Google Analytics include:
- Custom dimensions: Allows for up to 250 user-scoped and 50 event-scoped custom dimensions per property.
- Custom metrics: Permits up to 200 event-scoped custom metrics per property.
- Audiences: Supports up to 100 audiences per property.
- Conversions: Allows for up to 30 registered conversion events per property.
- Data retention: Defaults to 14 months, with options for extended retention through paid extensions.
Tip: Direct your focus towards collecting and analyzing data directly aligned with your marketing objectives and strategic decisions. Employ data segmentation to analyze specific website segments, thereby reducing the overall data volume processed for each report. If necessary, utilize data sampling during periods of high traffic to gain insights without surpassing processing limitations.
Google Keyword Planner limits
SEO limit: 700 keywords per search.
Google Keyword Planner, a complimentary tool provided by Google Ads, aids users in discovering pertinent keywords for their content strategies or advertising initiatives. The 700 keyword restriction pertains to both the quantity of keywords you can input in a single Keyword Ideas search and the number of keywords downloadable when utilizing the “Get search volume and forecasts” function.
Tip:
- Emphasize researching and analyzing the most pertinent keywords aligned with your campaign objectives and target audience, even within the 700 keyword limit.
- Utilize relevant seed keywords and filters to refine your search results and pinpoint the most valuable keywords within the constraint.
- Divide your exploration into smaller, targeted searches featuring different keywords and filters to explore a broader spectrum of potential options.
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Sum Up
In this section, we've discussed a range of SEO limits that many people tend to overlook. From the length of titles and meta descriptions to the quantity and content of header tags and H1 tags, we've covered a variety of limits that adherence to can improve website performance and visibility.
In Part 2, we will continue to explore 12 additional SEO constraints that you shouldn't ignore. Keep following along to learn more about improving your SEO and optimizing your website.