An alt text checker for websites is an essential tool for any webmaster or SEO professional looking to improve image accessibility and search visibility. In this comprehensive guide, we'll explore why alt text matters, how to audit your site, and the best practices to follow—all while showing you how our free Alt Text Checker can simplify the process.

What Is Alt Text and Why Does It Matter?

Alt text (alternative text) is a descriptive attribute added to an HTML image tag. It serves two primary purposes: it provides a textual alternative for screen readers (helping visually impaired users understand the image) and it gives search engines context about the image content, which can improve your site's SEO.

The Role of Alt Text in Accessibility

According to the Web Content Accessibility Guidelines (WCAG), alt text is a critical component of web accessibility. Without it, users relying on screen readers miss out on the information conveyed by images. This not only harms user experience but can also lead to legal issues in some jurisdictions.

The SEO Impact of Alt Text

Search engines like Google use alt text to understand what an image represents, which helps them index your images properly. Optimized alt text can drive traffic through image search and improve your page's relevance for target keywords. However, poorly written or missing alt text can hurt your rankings.

Why You Need an Alt Text Checker for Websites

Manually checking every image on your website is time-consuming and prone to errors, especially for large sites. An alt text checker for websites automates the audit process, quickly identifying images that are missing alt text, have empty alt attributes, or use non-descriptive filenames. This saves you hours of work and ensures nothing slips through the cracks.

Common Alt Text Problems

• Missing alt attributes: The image tag has no alt attribute at all.
• Empty alt attributes: The alt attribute is present but empty (alt=""). This is sometimes intentional for decorative images, but if used for informative images, it's a problem.
• Generic alt text: Using phrases like "image" or "photo" that don't describe the content.
• Keyword stuffing: Cramming keywords into alt text, which can be seen as spammy by search engines.
• Too long: Alt text that is excessively long and not concise.

How to Use an Alt Text Checker Effectively

Using an alt text checker for websites is straightforward. Most tools, including ours, allow you to enter your website URL and run a scan. The tool will crawl your pages and list all images, highlighting any issues. Here's a step-by-step guide:

1. Enter your website URL into the checker.
2. Run the audit and wait for the results.
3. Review the report which typically shows each image, its location, and its alt text status.
4. Identify issues such as missing or empty alt attributes.
5. Prioritize fixes based on the importance of the images (e.g., product images, infographics).
6. Update your site with proper alt text, either manually or via your CMS.

Best Practices for Writing Alt Text

To get the most out of your alt text checker for websites, you need to know how to write effective alt text. Follow these guidelines:

Be Descriptive and Specific

Describe what's in the image as if you were explaining it to someone over the phone. For example, instead of "dog", use "golden retriever puppy playing in a park".

Keep It Concise

Most screen readers cut off alt text at around 125 characters. Aim for a few words to a short sentence.

Use Keywords Naturally

Incorporate relevant keywords, but only if they fit naturally. Don't force keywords into every alt attribute.

Don't Repeat the Image Caption

If the image already has a caption, the alt text should not duplicate it. Instead, provide additional context.

Use Empty Alt for Decorative Images

If an image is purely decorative and adds no information, use alt="" so screen readers skip it.

Examples of Good vs. Bad Alt Text

Let's look at some examples to illustrate the difference:

Image	Bad Alt Text	Good Alt Text
Product photo of a blue running shoe	"shoe"	"Men's blue running shoe with white sole"
Chart showing sales growth	"chart"	"Line chart showing 20% sales growth in Q3 2023"
Team photo at office	"team"	"Marketing team posing in the office during a team-building event"

How to Fix Alt Text Issues on Your Website

Once your alt text checker for websites identifies problems, you need to fix them. The method depends on your CMS:

WordPress

In the media library, click on an image and edit the "Alt Text" field in the attachment details. For existing posts, you can edit the image block and update the alt text.

Shopify

Go to Products > select a product > scroll to the image and click "Edit alt text".

Wix

Click on the image, then click the settings icon and enter the "Alt Text" field.

Custom HTML

Edit the source code directly and add or modify the alt attribute in the img tag.

Common Mistakes to Avoid When Using Alt Text

Even with an alt text checker for websites, you might still make mistakes. Here are some pitfalls to avoid:

• Ignoring empty alt for decorative images: If you add descriptive alt text to decorative images, it can clutter screen reader output.
• Using alt text for text within images: If an image contains text, the alt text should include that text verbatim.
• Over-optimizing: Stuffing keywords into alt text can trigger spam filters.
• Forgetting to update alt text when images change: Always review alt text when you swap out images.

Frequently Asked Questions

What is the ideal length for alt text?

Keep it under 125 characters to ensure screen readers don't cut it off. Focus on being concise yet descriptive.

Can alt text improve my Google rankings?

Yes, alt text helps search engines understand your images, which can improve your page's relevance and potentially boost rankings, especially for image search.

Is it okay to leave alt text empty for some images?

Yes, for decorative images that don't convey meaningful information, an empty alt attribute (alt="") is recommended.

How often should I run an alt text audit?

It's a good practice to run an audit whenever you add new content or images, and periodically (e.g., quarterly) to catch any issues.

Do I need to use an alt text checker if I have a small website?

Even small sites can benefit. It's quick and ensures you don't miss any images, especially if you have many pages.

Conclusion: Take Action with Our Alt Text Checker

Optimizing alt text is a simple yet powerful way to enhance your website's accessibility and SEO. With an alt text checker for websites, you can quickly identify and fix issues, ensuring every image contributes to your site's success. Don't leave your images to chance—try our free Alt Text Checker today and see the difference it makes. Your users and search engines will thank you!