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    Image
    Alt Text
    Converter

    Generate WCAG-compliant alt text for images using a vision-language model fine-tuned for accessibility. Produces concise, descriptive text that conveys the meaning and function of images for screen reader users, with support for context-aware and decorative image detection.

    Max file size: 50 MB
    Estimated: 1-3 sec per image
    5 input formats

    How It Works

    1

    Upload an image or provide a URL to the Mixpeek API.

    2

    The image is classified as informative, decorative, functional, or complex.

    3

    A vision-language model generates alt text appropriate to the image type and context.

    4

    The alt text is checked against WCAG 2.1 guidelines for length, specificity, and relevance.

    5

    Alt text is returned with the image classification and a compliance confidence score.

    Code Examples

    from mixpeek import Mixpeek
    

    client = Mixpeek(api_key="YOUR_API_KEY")
    

    result = client.convert(
        source="https://example.com/hero-banner.jpg",
        from_format="image",
        to_format="alt-text",
        options={
            "page_context": "Homepage of an outdoor gear retailer",
            "max_length": 125,
            "style": "informative"
        }
    )
    

    print(f"Alt text: {result.alt_text}")
    print(f"Image type: {result.image_classification}")
    print(f"Compliance score: {result.compliance_score}")

    Use Cases

    Automate WCAG compliance for large websites with thousands of images
    Generate alt text for e-commerce product image catalogs at scale
    Ensure accessibility compliance for user-generated content platforms
    Remediate legacy content by batch-generating alt text for existing images

    Supported Input Formats

    JPEG
    PNG
    WebP
    TIFF
    BMP

    Quick Info

    Categorydata
    Max File Size50 MB
    Est. Time1-3 sec per image
    Extractorimage-descriptor

    Try This Conversion

    Get started with the Mixpeek API and convert your first file in minutes.

    Frequently Asked Questions

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    Ready to convert image to alt text?

    Start using the Mixpeek Image to Alt Text in minutes. Sign up for a free API key and follow the documentation to get started.