SEO
What Is It & How To Write It
In this guide, you will learn about alternative text (known as alt text): what it is, why it is important for on-page SEO, how to use it correctly, and more.
It’s often overlooked, but every image on your website should have alt text. More information is better, and translating visual information into text is important for search engine bots attempting to understand your website and users with screen readers.
Alt text is one more source of information that relates ideas and content together on your website.
This practical and to-the-point guide contains tips and advice you can immediately use to improve your website’s image SEO and accessibility.
What Is Alt Text?
Alternative text (or alt text) – also known as the alt attribute or the alt tag (which is not technically correct because it is not a tag) – is simply a piece of text that describes the image in the HTML code.
What Are The Uses Of Alt Text?
The original function of alt text was simply to describe an image that could not be loaded.
Many years ago, when the internet was much slower, alt text would help you know the content of an image that was too heavy to be loaded in your browser.
Today, images rarely fail to load – but if they do, then it is the alt text you will see in place of an image.
Alt text also helps search engine bots understand the image’s content and context.
More importantly, alt text is critical for accessibility and for people using screen readers:
- Alt text helps people with disabilities (for example, using screen readers) learn about the image’s content.
Of course, like every element of SEO, it is often misused or, in some cases, even abused.
Let’s now take a closer look at why alt text is important.
Why Alt Text Is Important
The web and websites are a very visual experience. It is hard to find a website without images or graphic elements.
That’s why alt text is very important.
Alt text helps translate the image’s content into words, thus making the image accessible to a wider audience, including people with disabilities and search engine bots that are not clever enough yet to fully understand every image, its context, and its meaning.
Why Alt Text Is Important For SEO
Alt text is an important element of on-page SEO optimization.
Proper alt text optimization makes your website stand a better chance of ranking in Google image searches.
Yes, alt text is a ranking factor for Google image search.
Depending on your website’s niche and specificity, Google image search traffic may play a huge role in your website’s overall success.
For example, in the case of ecommerce websites, users very often start their search for products with a Google image search instead of typing the product name into the standard Google search.
Google and other search engines may display fewer product images (or not display them at all) if you fail to take care of their alt text optimization.
Without proper image optimization, you may lose a lot of potential traffic and customers.
Why Alt Text Is Important For Accessibility
Visibility in Google image search is very important, but there is an even more important consideration: Accessibility.
Fortunately, in recent years, more focus has been placed on accessibility (i.e., making the web accessible to everyone, including people with disabilities and/or using screen readers).
Suppose the alt text of your images actually describes their content instead of, for example, stuffing keywords. In that case, you are helping people who cannot see this image better understand it and the content of the entire web page.
Let’s say one of your web pages is an SEO audit guide that contains screenshots from various crawling tools.
Would it not be better to describe the content of each screenshot instead of placing the same alt text of “SEO audit” into every image?
Let’s take a look at a few examples.
Alt Text Examples
Finding many good and bad examples of alt text is not difficult. Let me show you a few, sticking to the above example with an SEO audit guide.
Good Alt Text Examples
So, our example SEO guide contains screenshots from tools such as Google Search Console and Screaming Frog.
Some good examples of alt text may include:
Tip: It is also a good idea to take care of the name of your file. Using descriptive file names is not a ranking factor, but I recommend this as a good SEO practice.
Bad And/Or Spammy Alt Text Examples
I’ve also seen many examples of bad alt text use, including keyword stuffing or spamming.
Here is how you can turn the above good examples into bad examples:
As you can see, the above examples do not provide any information on what these images actually show.
You can also find examples and even more image SEO tips on Google Search Central.
Common Alt Text Mistakes
Stuffing keywords in the alt text is not the only mistake you can make.
Here are a few examples of common alt text mistakes:
- Failure to use the alt text or using empty alt text.
- Using the same alt text for different images.
- Using very general alt text that does not actually describe the image. For example, using the alt text of “dog” on the photo of a dog instead of describing the dog in more detail, its color, what it is doing, what breed it is, etc.
- Automatically using the name of the file as the alt text – which may lead to very unfriendly alt text, such as “googlesearchconsole,” “google-search-console,” or “photo2323,” depending on the name of the file.
Alt Text Writing Tips
And finally, here are the tips on how to write correct alt text so that it actually fulfills its purpose:
- Do not stuff keywords into the alt text. Doing so will not help your web page rank for these keywords.
- Describe the image in detail, but still keep it relatively short. Avoid adding multiple sentences to the alt text.
- Use your target keywords, but in a natural way, as part of the image’s description. If your target keyword does not fit into the image’s description, don’t use it.
- Don’t use text on images. All text should be added in the form of HTML code.
- Don’t write, “this is an image of.” Google and users know that this is an image. Just describe its content.
- Make sure you can visualize the image’s content by just reading its alt text. That is the best exercise to make sure your alt text is OK.
How To Troubleshoot Image Alt Text
Now you know all the best practices and common mistakes of alt text. But how do you check what’s in the alt text of the images of a website?
You can analyze the alt text in the following ways:
Inspecting an element (right-click and select Inspect when hovering over an image) is a good way to check if a given image has alt text.
However, if you want to check that in bulk, I recommend one of the below two methods.
Install Web Developer Chrome extension.
Next, open the page whose images you want to audit.
Click on Web Developer and navigate to Images > Display Alt Attributes. This way, you can see the content of the alt text of all images on a given web page.
How To Find And Fix Missing Alt Text
To check the alt text of the images of the entire website, use a crawler like Screaming Frog or Sitebulb.
Crawl the site, navigate to the image report, and review the alt text of all website images, as shown in the video guide below.
You can also export only images that have missing alt text and start fixing those issues.
Alt Text May Not Seem Like A Priority, But It’s Important
Every source of information about your content has value. Whether it’s for vision-impaired users or bots, alt text helps contextualize the images on your website.
While it’s only a ranking factor for image search, everything you do to help search engines understand your website can potentially help deliver more accurate results. Demonstrating a commitment to accessibility is also a critical component of modern digital marketing.
FAQ
What is the purpose of alt text in HTML?
Alternative text, or alt text, serves two main purposes in HTML. Its primary function is to provide a textual description of an image if it cannot be displayed. This text can help users understand the image content when technical issues prevent it from loading or if they use a screen reader due to visual impairments. Additionally, alt text aids search engine bots in understanding the image’s subject matter, which is critical for SEO, as indexing images correctly can enhance a website’s visibility in search results.
Can alt text improve website accessibility?
Yes, alt text is vital for website accessibility. It translates visual information into descriptive text that can be read by screen readers used by users with visual impairments. By accurately describing images, alt text ensures that all users, regardless of disability, can understand the content of a web page, making the web more inclusive and accessible to everyone.
More resources:
Featured Image: BestForBest/Shutterstock
SEO
YouTube Extends Shorts To 3 Minutes, Adds New Features
YouTube expands Shorts to 3 minutes, adds templates, AI tools, and the option to show fewer Shorts on the homepage.
- YouTube Shorts will allow 3-minute videos.
- New features include templates, enhanced remixing, and AI-generated video backgrounds.
- YouTube is adding a Shorts trends page and comment previews.
SEO
How To Stop Filter Results From Eating Crawl Budget
Today’s Ask An SEO question comes from Michal in Bratislava, who asks:
“I have a client who has a website with filters based on a map locations. When the visitor makes a move on the map, a new URL with filters is created. They are not in the sitemap. However, there are over 700,000 URLs in the Search Console (not indexed) and eating crawl budget.
What would be the best way to get rid of these URLs? My idea is keep the base location ‘index, follow’ and newly created URLs of surrounded area with filters switch to ‘noindex, no follow’. Also mark surrounded areas with canonicals to the base location + disavow the unwanted links.”
Great question, Michal, and good news! The answer is an easy one to implement.
First, let’s look at what you’re trying and apply it to other situations like ecommerce and publishers. This way, more people can benefit. Then, go into your strategies above and end with the solution.
What Crawl Budget Is And How Parameters Are Created That Waste It
If you’re not sure what Michal is referring to with crawl budget, this is a term some SEO pros use to explain that Google and other search engines will only crawl so many pages on your website before it stops.
If your crawl budget is used on low-value, thin, or non-indexable pages, your good pages and new pages may not be found in a crawl.
If they’re not found, they may not get indexed or refreshed. If they’re not indexed, they cannot bring you SEO traffic.
This is why optimizing a crawl budget for efficiency is important.
Michal shared an example of how “thin” URLs from an SEO point of view are created as customers use filters.
The experience for the user is value-adding, but from an SEO standpoint, a location-based page would be better. This applies to ecommerce and publishers, too.
Ecommerce stores will have searches for colors like red or green and products like t-shirts and potato chips.
These create URLs with parameters just like a filter search for locations. They could also be created by using filters for size, gender, color, price, variation, compatibility, etc. in the shopping process.
The filtered results help the end user but compete directly with the collection page, and the collection would be the “non-thin” version.
Publishers have the same. Someone might be on SEJ looking for SEO or PPC in the search box and get a filtered result. The filtered result will have articles, but the category of the publication is likely the best result for a search engine.
These filtered results can be indexed because they get shared on social media or someone adds them as a comment on a blog or forum, creating a crawlable backlink. It might also be an employee in customer service responded to a question on the company blog or any other number of ways.
The goal now is to make sure search engines don’t spend time crawling the “thin” versions so you can get the most from your crawl budget.
The Difference Between Indexing And Crawling
There’s one more thing to learn before we go into the proposed ideas and solutions – the difference between indexing and crawling.
- Crawling is the discovery of new pages within a website.
- Indexing is adding the pages that are worthy of showing to a person using the search engine to the database of pages.
Pages can get crawled but not indexed. Indexed pages have likely been crawled and will likely get crawled again to look for updates and server responses.
But not all indexed pages will bring in traffic or hit the first page because they may not be the best possible answer for queries being searched.
Now, let’s go into making efficient use of crawl budgets for these types of solutions.
Using Meta Robots Or X Robots
The first solution Michal pointed out was an “index,follow” directive. This tells a search engine to index the page and follow the links on it. This is a good idea, but only if the filtered result is the ideal experience.
From what I can see, this would not be the case, so I would recommend making it “noindex,follow.”
Noindex would say, “This is not an official page, but hey, keep crawling my site, you’ll find good pages in here.”
And if you have your main menu and navigational internal links done correctly, the spider will hopefully keep crawling them.
Canonicals To Solve Wasted Crawl Budget
Canonical links are used to help search engines know what the official page to index is.
If a product exists in three categories on three separate URLs, only one should be “the official” version, so the two duplicates should have a canonical pointing to the official version. The official one should have a canonical link that points to itself. This applies to the filtered locations.
If the location search would result in multiple city or neighborhood pages, the result would likely be a duplicate of the official one you have in your sitemap.
Have the filtered results point a canonical back to the main page of filtering instead of being self-referencing if the content on the page stays the same as the original category.
If the content pulls in your localized page with the same locations, point the canonical to that page instead.
In most cases, the filtered version inherits the page you searched or filtered from, so that is where the canonical should point to.
If you do both noindex and have a self-referencing canonical, which is overkill, it becomes a conflicting signal.
The same applies to when someone searches for a product by name on your website. The search result may compete with the actual product or service page.
With this solution, you’re telling the spider not to index this page because it isn’t worth indexing, but it is also the official version. It doesn’t make sense to do this.
Instead, use a canonical link, as I mentioned above, or noindex the result and point the canonical to the official version.
Disavow To Increase Crawl Efficiency
Disavowing doesn’t have anything to do with crawl efficiency unless the search engine spiders are finding your “thin” pages through spammy backlinks.
The disavow tool from Google is a way to say, “Hey, these backlinks are spammy, and we don’t want them to hurt us. Please don’t count them towards our site’s authority.”
In most cases, it doesn’t matter, as Google is good at detecting spammy links and ignoring them.
You do not want to add your own site and your own URLs to the disavow tool. You’re telling Google your own site is spammy and not worth anything.
Plus, submitting backlinks to disavow won’t prevent a spider from seeing what you want and do not want to be crawled, as it is only for saying a link from another site is spammy.
Disavowing won’t help with crawl efficiency or saving crawl budget.
How To Make Crawl Budgets More Efficient
The answer is robots.txt. This is how you tell specific search engines and spiders what to crawl.
You can include the folders you want them to crawl by marketing them as “allow,” and you can say “disallow” on filtered results by disallowing the “?” or “&” symbol or whichever you use.
If some of those parameters should be crawled, add the main word like “?filter=location” or a specific parameter.
Robots.txt is how you define crawl paths and work on crawl efficiency. Once you’ve optimized that, look at your internal links. A link from one page on your site to another.
These help spiders find your most important pages while learning what each is about.
Internal links include:
- Breadcrumbs.
- Menu navigation.
- Links within content to other pages.
- Sub-category menus.
- Footer links.
You can also use a sitemap if you have a large site, and the spiders are not finding the pages you want with priority.
I hope this helps answer your question. It is one I get a lot – you’re not the only one stuck in that situation.
More resources:
Featured Image: Paulo Bobita/Search Engine Journal
SEO
Ad Copy Tactics Backed By Study Of Over 1 Million Google Ads
Mastering effective ad copy is crucial for achieving success with Google Ads.
Yet, the PPC landscape can make it challenging to discern which optimization techniques truly yield results.
Although various perspectives exist on optimizing ads, few are substantiated by comprehensive data. A recent study from Optmyzr attempted to address this.
The goal isn’t to promote or dissuade any specific method but to provide a clearer understanding of how different creative decisions impact your campaigns.
Use the data to help you identify higher profit probability opportunities.
Methodology And Data Scope
The Optmyzr study analyzed data from over 22,000 Google Ads accounts that have been active for at least 90 days with a minimum monthly spend of $1,500.
Across more than a million ads, we assessed Responsive Search Ads (RSAs), Expanded Text Ads (ETAs), and Demand Gen campaigns. Due to API limitations, we could not retrieve asset-level data for Performance Max campaigns.
Additionally, all monetary figures were converted to USD to standardize comparisons.
Key Questions Explored
To provide actionable insights, we focused on addressing the following questions:
- Is there a correlation between Ad Strength and performance?
- How do pinning assets impact ad performance?
- Do ads written in title case or sentence case perform better?
- How does creative length affect ad performance?
- Can ETA strategies effectively translate to RSAs and Demand Gen ads?
As we evaluated the results, it’s important to note that our data set represents advanced marketers.
This means there may be selection bias, and these insights might differ in a broader advertiser pool with varying levels of experience.
The Relationship Between Ad Strength And Performance
Google explicitly states that Ad Strength is a tool designed to guide ad optimization rather than act as a ranking factor.
Despite this, marketers often hold mixed opinions about its usefulness, as its role in ad performance appears inconsistent.
Our data corroborates this skepticism. Ads labeled with an “average” Ad Strength score outperformed those with “good” or “excellent” scores in key metrics like CPA, conversion rate, and ROAS.
This disparity is particularly evident in RSAs, where the ROAS tends to decrease sharply when moving from “average” to “good,” with only a marginal increase when advancing to “excellent.”
Interestingly, Demand Gen ads also showed a stronger performance with an “average” Ad Strength, except for ROAS.
The metrics for conversion rates in Demand Gen and RSAs were notably similar, which is surprising since Demand Gen ads are typically designed for awareness, while RSAs focus on driving transactions.
Key Takeaways:
- Ad Strength doesn’t reliably correlate with performance, so it shouldn’t be a primary metric for assessing your ads.
- Most ads with “poor” or “average” Ad Strength labels perform well by standard advertising KPIs.
- “Good” or “excellent” Ad Strength labels do not guarantee better performance.
How Does Pinning Affect Ad Performance?
Pinning refers to locking specific assets like headlines or descriptions in fixed positions within the ad. This technique became common with RSAs, but there’s ongoing debate about its efficacy.
Some advertisers advocate for pinning all assets to replicate the control offered by ETAs, while others prefer to let Google optimize placements automatically.
Our data suggests that pinning some, but not all, assets offers the most balanced results in terms of CPA, ROAS, and CPC. However, ads where all assets are pinned achieve the highest relevance in terms of CTR.
Still, this marginally higher CTR doesn’t necessarily translate into better conversion metrics. Ads with unpinned or partially pinned assets generally perform better in terms of conversion rates and cost-based metrics.
Key Takeaways:
- Selective pinning is optimal, offering a good balance between creative control and automation.
- Fully pinned ads may increase CTR but tend to underperform in metrics like CPA and ROAS.
- Advertisers should embrace RSAs, as they consistently outperform ETAs – even with fully pinned assets.
Title Case Vs. Sentence Case: Which Performs Better?
The choice between title case (“This Is a Title Case Sentence”) and sentence case (“This is a sentence case sentence”) is often a point of contention among advertisers.
Our analysis revealed a clear trend: Ads using sentence case generally outperformed those in title case, particularly in RSAs and Demand Gen campaigns.
(RSA Data)
(ETA Data)
(Demand Gen)
ROAS, in particular, showed a marked preference for sentence case across these ad types, suggesting that a more natural, conversational tone may resonate better with users.
Interestingly, many advertisers still use a mix of title and sentence case within the same account, which counters the traditional approach of maintaining consistency throughout the ad copy.
Key Takeaways:
- Sentence case outperforms title case in RSAs and Demand Gen ads on most KPIs.
- Including sentence case ads in your testing can improve performance, as it aligns more closely with organic results, which users perceive as higher quality.
- Although ETAs perform slightly better with title case, sentence case is increasingly the preferred choice in modern ad formats.
The Impact Of Ad Length On Performance
Ad copy, particularly for Google Ads, requires brevity without sacrificing impact.
We analyzed the effects of character count on ad performance, grouping ads by the length of headlines and descriptions.
(RSA Data)
(ETA Data)
(Demand Gen Data)
Interestingly, shorter headlines tend to outperform longer ones in CTR and conversion rates, while descriptions benefit from moderate length.
Ads that tried to maximize character counts by using dynamic keyword insertion (DKI) or customizers often saw no significant performance improvement.
Moreover, applying ETA strategies to RSAs proved largely ineffective.
In almost all cases, advertisers who carried over ETA tactics to RSAs saw a decline in performance, likely because of how Google dynamically assembles ad components for display.
Key Takeaways:
- Shorter headlines lead to better performance, especially in RSAs.
- Focus on concise, impactful messaging instead of trying to fill every available character.
- ETA tactics do not translate well to RSAs, and attempting to replicate them can hurt performance.
Final Thoughts On Ad Optimizations
In summary, several key insights emerge from this analysis.
First, Ad Strength should not be your primary focus when assessing performance. Instead, concentrate on creating relevant, engaging ad copy tailored to your target audience.
Additionally, pinning assets should be a strategic, creative decision rather than a hard rule, and advertisers should incorporate sentence case into their testing for RSAs and Demand Gen ads.
Finally, focus on quality over quantity in ad copy length, as longer ads do not always equate to better results.
By refining these elements of your ads, you can drive better ROI and adapt to the evolving landscape of Google Ads.
Read the full Ad Strength & Creative Study from Optmyzr.
More resources:
Featured Image: Sammby/Shutterstock
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