# Alt-Text Accessibility Checker MCP for AI Agents MCP > Alt-Text Accessibility Checker validates image alt-text against WCAG standards to ensure your website is accessible to everyone. It checks for character counts, removes redundant phrases like 'image of,' and classifies images as informative or decorative. This MCP helps you catch common mistakes that can lead to compliance issues or poor user experiences for people using screen readers. Use it to audit your images quickly and keep your site standards high. ## Overview - **Category:** web-development - **Price:** Free - **Endpoint:** https://edge.vinkius.com/vk_preview_yNBXSVTbKzwTqxpeKQ1nHT4A9IiCcsrd02e7oNeH/mcp - **Tags:** wcag, alt-text, accessibility, web-standards, image-optimization ## Description Web accessibility is a headache because it's so easy to miss the small stuff. You might have images with 'image of' repeated everywhere, or alt text that's so long it's useless for screen readers. This MCP lets your AI agent handle the heavy lifting of auditing your site's image metadata. Instead of clicking through every page to check character counts or looking for duplicates, you can just ask your agent to run a full audit. It handles the nuance of identifying whether an image is just decorative or if it actually needs a descriptive label. You can find this and other tools in the Vinkius catalog to make your development workflow faster. It turns a manual, error-prone checklist into a quick conversation with your AI client. It's perfect for catching those 'picture of' phrases that screen readers announce unnecessarily, or for making sure your descriptions aren't too wordy. You can get a clear picture of your site's accessibility health without having to manually inspect every single tag. It makes sure your images are actually usable for everyone while keeping your work fast. It basically takes the guesswork out of WCAG compliance by giving you clear, actionable feedback on every image you host. It's the fastest way to get your images compliant. ## Tools ### analyze_redundancy Identifies and flags phrases like 'image of' that clutter your alt text. ### check_length Verifies if your alt-text character counts fall within the recommended WCAG ranges. ### determine_image_role Classifies an image as either informative or decorative based on the provided text. ### evaluate_descriptiveness Calculates a specific score for how well the alt-text describes the image content. ### identify_duplicates Scans a list of alt-texts to find and flag repeated entries on a single page. ## Prompt Examples **Prompt:** ``` Check if 'A golden retriever running in grass' is a good alt-text for length. ``` **Response:** ``` The character count is **37**, which falls within the recommended range. ``` **Prompt:** ``` Does the text 'picture of a cat' pass redundancy checks? ``` **Response:** ``` No, it fails the redundancy check. It contains the phrase **'picture of'**, which screen readers already announce. ``` **Prompt:** ``` Classify an image with alt-text '' (empty string). ``` **Response:** ``` Based on the empty string provided, this image is classified as **decorative**. It does not require an alt-text description. ``` ## Capabilities ### Verify character counts Checks if your alt-text length stays within recommended WCAG bounds. ### Strip redundant phrases Identifies and flags useless 'image of' or 'picture of' fluff. ### Classify image roles Determines if an image is informative or decorative for screen readers. ### Score descriptiveness Calculates a specific score for how well the text describes the content. ### Find duplicate tags Detects repeated alt-text entries on a single page to ensure variety. ## Use Cases ### Checking a gallery page An auditor finds 50 images and identifies any that have the same alt tag to ensure variety. ### Auditing a blog post A dev wants to know if the main hero image is too wordy and verifies the length against standards. ### Cleaning up old content A content manager scans a legacy page to remove 'photo of' from all descriptions at once. ### Accessibility compliance check A dev quickly sees which images can be marked as decorative to meet legal requirements. ## Benefits - Stop wasting time on manual audits by instantly verifying character counts across hundreds of images to stay within WCAG limits. - Keep your alt text clean and professional by automatically stripping out useless 'picture of' fluff from your descriptions. - Ensure screen readers ignore what they should by correctly flagging decorative elements so they don't clutter the experience. - Get a clear sense of content quality by scoring how well your current descriptions actually match the image content. - Avoid confusing users with repeated content by catching redundant tags on the same page before you go live. ## How It Works The bottom line is it automates the tedious parts of accessibility auditing so you can focus on building. 1. Connect the MCP to your AI client like Claude or Cursor. 2. Provide your image alt-text strings or a list of image URLs to your agent. 3. Receive a structured report on WCAG compliance and specific fixes. ## Frequently Asked Questions **How can the Alt-Text Accessibility Checker help with WCAG?** It automates the verification of your image alt-text against WCAG standards. You'll get a clear report on character counts and descriptive quality, making it much easier to stay compliant. **Can I use Alt-Text Accessibility Checker to find duplicate images?** Yes, it can scan your list of alt-texts to identify any repeated entries on a single page. This ensures your site doesn't present redundant information to users. **Does Alt-Text Accessibility Checker check for 'image of' phrases?** It specifically identifies and flags redundant phrases like 'image of' or 'picture of.' This helps keep your alt-text clean and professional for screen reader users. **How does Alt-Text Accessibility Checker handle decorative images?** It classifies images as either informative or decorative based on the text provided. This helps you manage how screen readers interact with your site's visual elements. **Can Alt-Text Accessibility Checker audit my whole site?** You can provide your agent with a list of image data or alt-texts from across your site. It will then audit them for redundancy, length, and descriptive quality. **Is Alt-Text Accessibility Checker good for SEO?** Yes, by ensuring your alt-text is descriptive and free of redundant fluff, it helps search engines understand your content better while improving accessibility. **How does it check for redundancy?** It uses `analyze_redundancy` to scan for phrases like 'picture of' or 'graphic showing'. **Can I check multiple images at once?** Yes, use `identify_duplicates` with a list of alt-text strings to find repeated descriptions on a page. **What is the recommended length for alt-text?** The `check_length` tool verifies if your text stays within the optimal character range defined by WCAG guidelines.