Image Alt Text Checker
Find images missing or empty alt text on a page.
The Image Alt Text Checker is an essential utility for anyone serious about website optimization and accessibility. This powerful tool scans any given URL to meticulously audit all images for their alt attributes. For instance, if you're a content manager launching a new product page, you can use it to ensure every product photo and illustrative graphic includes descriptive alt text, crucial for both SEO and screen readers. Similarly, an SEO specialist performing an audit can quickly pinpoint images on a client's blog that are hurting their ranking potential due to missing or generic alt attributes.
Its primary function is to highlight images that either completely lack an alt attribute or possess one that is empty (alt=""). Input is a single webpage URL, and the output is a detailed list showing the source URL of each image, its current alt text (or a clear indication if it's missing or empty), and often the surrounding HTML to provide context. A crucial tip for effective use: always review images marked as having empty alt text. While sometimes appropriate for purely decorative images, often it's an oversight that can be easily corrected to improve user experience and search engine understanding. This tool doesn't add alt text, but it provides the critical data needed for you to make informed improvements to your website's image strategy.
How to use Image Alt Text Checker
Enter Page URL
Paste the full URL of the webpage you wish to analyze into the input field. Ensure it starts with http:// or https://.
Initiate Scan
Click the "Check Alt Text" button to start the analysis. The tool will then fetch the page and begin processing its images.
Review Results Table
Examine the generated table, which lists each image found, its source URL, and its corresponding alt text status. Pay close attention to images flagged as "Missing" or "Empty."
Identify Issues
Use the highlighted rows or specific status indicators to quickly pinpoint images on your page that require alt text optimization for better SEO and accessibility.
Implement Fixes
Based on the report, return to your website's content management system or HTML code to add or update descriptive alt text for the identified images.
Frequently Asked Questions
What types of images does the Image Alt Text Checker identify?
It identifies all <img> tags on a given webpage, regardless of whether they are embedded directly or loaded via JavaScript, and reports on their alt attribute status.
Does this tool fix my alt text for me?
No, the Image Alt Text Checker is an audit tool. It helps you identify where alt text is missing or empty, but you will need to manually update your website's code or CMS to implement the necessary changes.
Can I check alt text for images embedded within CSS background properties?
No, this tool specifically checks the alt attribute of standard <img> HTML tags. Images loaded purely as CSS background properties do not have alt attributes and cannot be audited this way.
What's the difference between "Missing Alt Text" and "Empty Alt Text" in the report?
"Missing Alt Text" means the alt attribute is entirely absent from the <img> tag, which is generally poor for SEO and accessibility. "Empty Alt Text" means the alt attribute exists but contains no value (alt=""), which is sometimes acceptable for purely decorative images.
Is there a limit to how many images or pages I can check?
While designed for single-page analysis, the tool typically handles pages with a large number of images. Excessive requests in a short period might be limited to ensure fair usage and server stability.
Does the Image Alt Text Checker store my website data or scan results?
No, the tool processes the URL you provide in real-time within your browser or on the server without storing any persistent data about your website or its scan results.