Alt Text Inspector
Quick Answer
Alternative text is an HTML attribute on an <img> tag that describes the image content for screen readers and is shown when the image cannot load.
What Is Alt Text Inspector?
Alt Text Inspector is a free online seo tools tool that find images missing alt text in any html to fix accessibility and seo issues. An alt text inspector analyses the alt attributes of images on a web page. Alt text (alternative text) is the text description of an image used by screen readers for visually impaired users and displayed when an image fails to load. Good alt text is descriptive and context-aware. Poor alt text says "image.jpg" or is left empty. Paste a page URL or HTML snippet. The tool finds all <img> tags and reports whether each has alt text, how descriptive it is, whether it duplicates the filename, and whether it is empty or missing entirely. It also flags decorative images that should have alt="" (empty) rather than a verbose description. The analysis follows WCAG guidelines. No data is uploaded — everything runs locally. Unlike many similar tools, it runs entirely in your browser — no data is sent to any server, no account is required, and there are no usage limits. Whether you are a developer, writer, SEO professional, or casual user, this tool provides instant, accurate results without friction.
How to Use Alt Text Inspector
Paste a URL or raw HTML containing images. The tool analyses each <img> tag and reports alt text quality, flagging missing, empty, or unhelpful alt attributes.
Key Features
- Analyses alt attributes on all images in HTML
- Flags missing, empty, filename-based, or generic alt text
- Follows WCAG accessibility guidelines
- Fully client-side
Common Use Cases
- Auditing a web page for accessibility compliance
- Improving SEO by ensuring all images have descriptive alt text
- Teaching web developers the importance of proper alt attributes
Common Mistakes to Avoid
- Using the image filename as alt text (e.g. alt='IMG_1234.jpg')
- Writing 'image of' or 'picture of' in alt text — screen readers already announce it as an image
- Leaving alt text empty for non-decorative images — only decorative images should have alt=''
Related Topics & Entities
- Alt text
- Accessibility
- WCAG
- Screen reader
- HTML img tag
Common Questions About Alt Text Inspector
Related Tools & Resources
- Meta Tag Analyzer
- SERP Preview
- OG Tag Generator
Best Practices for Alt Text Inspector
To get the most out of Alt Text Inspector, follow these best practices. Ensure your input data is clean and properly formatted for the most accurate results. Use the copy function to transfer output directly to your clipboard. Bookmark the tool for easy access. Check the related tools section below for complementary utilities that can enhance your workflow. Remember that all processing is client-side, so your data never leaves your browser.
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Privacy & Security
Alt Text Inspector processes all data entirely within your browser using JavaScript. No text, files, or personal information is transmitted to any server. Your data stays on your device, making this tool safe for sensitive content. We do not track usage, store inputs, or share data with third parties. The tool works offline after the initial page load and requires no account to use.
Frequently Asked Questions
Find answers to common questions about this tool.