When it comes to optimising your website for search engines, every little detail counts. One often overlooked yet crucial aspect of SEO is using alt tags for images. Alt tags, or alternative text, are a simple addition to your images that can significantly impact your website’s SEO and accessibility. In this blog post, we’ll delve into what alt tags are, why they are essential, and how you can effectively use them to enhance your website’s performance.
What Are Alt Tags?
Alt tags, or alternative text, are descriptions added to the HTML code of an image on a website. These descriptions provide information about the image content to search engines and assistive technologies like screen readers. Here’s a basic example of an alt tag:
alt= “A beautiful sunrise over the mountains“
Why Are Alt Tags Important?
Improved Accessibility
One primary purpose of alt tags is to improve web accessibility. Screen readers use alt tags to describe images to visually impaired users, enabling them to understand the content and context of images on a webpage. Providing accurate and descriptive alt tags makes your website more accessible to a broader audience.
Better SEO
Search engines can’t see images as humans do; they rely on text to understand and index the content. Alt tags help search engines understand the subject matter of your pictures, which can improve your website’s SEO. Properly optimised images with descriptive alt tags can help you rank higher in search engine results, particularly in image searches.
Enhanced User Experience
Alt tags can also enhance the user experience by providing context for images that may not load correctly due to slow connections or errors. In such cases, the alt text is displayed in place of the image, ensuring that users still understand the page’s content.
What Should Alt Tags Include?
Creating effective alt tags requires a balance of descriptiveness and keyword optimisation. Here are some best practices for writing alt tags:
Be Descriptive and Specific
Describe the content and context of the image as accurately as possible. Instead of a generic description like “dog,” use something more specific like “Golden Retriever playing in the park.”
Include Keywords Naturally
Where appropriate, include relevant keywords to enhance SEO. However, avoid keyword stuffing. The primary goal should be providing a meaningful description that makes sense to users and search engines.
Keep It Concise
Alt tags should be concise yet descriptive. Aim for around 125 characters, as some screen readers may truncate longer descriptions.
Avoid Using “Image of” or “Picture of”
Screen readers already identify the element as an image, so there’s no need to start your alt text with phrases like “image of” or “picture of.” Jump straight into the description.
Examples of Good and Bad Alt Tags
Let’s look at some examples to understand the difference between effective and ineffective alt tags
Bad Alt Tag:
alt=”flower”
Why it’s bad: It’s too generic and doesn’t provide enough information.
Good Alt Tag:
alt= “Close-up of a red rose with dew drops“
Why it’s good: It’s specific and descriptive, providing a clear image of what is depicted.
Bad Alt Tag:
alt=” buy shoes online shoe sale discount”
Why it’s bad: It’s keyword-stuffed and doesn’t describe the image.
Good Alt Tag:
Black running shoes with white soles“
Why it’s good: It gives a clear, concise image content description.
Tools and Tips for Implementing Alt Tags
Use an SEO Plugin
If you use a CMS like WordPress, plugins like Yoast SEO or All in One SEO can help you manage alt tags effectively. These tools often include features for identifying images missing alt tags and suggesting improvements.
Regular Audits
Conduct regular audits of your website’s images to ensure all have appropriate alt tags. Tools like Google’s Lighthouse can help identify images that are missing alt text.
Training and Guidelines
Ensure that everyone involved in content creation understands the importance of alt tags and follows best practices. Provide training and clear guidelines to maintain consistency.
Alt tags may seem minor, but they significantly improve your website’s SEO and accessibility. By investing the time to write descriptive, keyword-optimised alt tags, you can enhance your site’s search engine rankings, provide a better user experience, and ensure your content is accessible to all users. Start implementing these best practices today and watch your website’s performance and inclusivity grow.
